Online engine resources (casting numbers, calculators, etc.) - The 1947 - Present Chevrolet & GMC Truck Message Board Network

PhilaTruck · 01-22-2010, 09:59 PM

Please add your favorite drive train references here (Here are some of mine.):

V8 head and engine casting number info: mortec.com

I6 casting numbers: classictruckshop.com

Calculators: wallaceracing.com/Calculators

SBC head flow data: purplesagetradingpost.com (These guys are really cool.)

*Ticker* · 01-22-2010, 11:25 PM

Stan Weiss' - Cylinder Head Flow Data at 28 Inches of Water

Engine Compression Ratio Calculator

PhilaTruck · 01-30-2010, 10:14 PM

Drilling steam holes in heads for 400s: Posted by Beuford (here's the post) and here's the link to Gregsengines.

*Ticker* · 02-02-2010, 01:01 PM

Holley Technical Library

Online Holley Carb Sizer

Holley Carb Selection Guide (PDF)

Locating the Holley Carb List Number

List of Holley Carbs by Part Number (PDF)

*Ticker* · 02-05-2010, 02:56 PM

Cam References

CompCams Cam Timing Tutorial

67ss&99ss · 02-08-2010, 01:23 AM

Pat Kelly's dynamic compression ratio information and calculator.

http://www.empirenet.com/pkelley2/DynamicCR.html

Mxracer202 · 03-21-2010, 04:56 PM

Has TONS of info on I6 http://Chuckthetruck.com\

I6 tech and tips, Where to find the engine code.
http://www.jalopyjournal.com/forum/s...d.php?t=184304

**VetteVet** · 08-21-2010, 07:36 PM

I can't believe no one posted this.
http://www.nastyz28.com/sbcmenu.php

1Bad62Pro/Street · 09-02-2010, 09:14 AM

Big Block Chevy Cylinder Head Identification
1Bad62Pro/Street
http://67-72chevytrucks.com/vboard/s...d.php?t=357306

Big Block Chevy Engine Block Identification
1Bad62Pro/Street
http://67-72chevytrucks.com/vboard/s...d.php?t=357304

Small Block Chevy Cylinder Head Identification
1Bad62Pro/Street
http://67-72chevytrucks.com/vboard/s...d.php?t=353542

Small Block Chevy Engine Block Identification
1Bad62Pro/Street
http://67-72chevytrucks.com/vboard/s...d.php?t=353538

Chevy Six Cylinder Casting Numbers
1Bad62Pro/Street
http://67-72chevytrucks.com/vboard/s...d.php?t=356268

((((Transmission Specs ))))
1Bad62Pro/Street
http://67-72chevytrucks.com/vboard/s...d.php?t=390542

Camshaft Tips & Definitions
1Bad62Pro/Street
http://67-72chevytrucks.com/vboard/s...d.php?t=347969

Ford 9" Rear Axle Information
1Bad62Pro/Street
http://67-72chevytrucks.com/vboard/s...d.php?t=358081

Ford 9-inch Rear End Length Data
1Bad62Pro/Street
http://67-72chevytrucks.com/vboard/s...d.php?t=354261

The (BEST) and (WORST) Small Block Chevys Engines Of All Time
1Bad62Pro/Street
http://67-72chevytrucks.com/vboard/s...d.php?t=386581

The History Of The Chevy Small-Block Motor
1Bad62Pro/Street
http://67-72chevytrucks.com/vboard/s...d.php?t=354680

The (BEST) and (WORST) Small Block Chevys Engines Of All Time
http://67-72chevytrucks.com/vboard/s...d.php?t=386581

1Bad62Pro/Street · 09-26-2010, 08:31 AM

BoxWrench V8 Engine Specs-Torque Specs-Firing Order-Block Cylinder Numbering-Distributor Rotation
http://www.boxwrench.net/specs_index.htm

Chevy 235 Inline 6 Cylinder Engine Specs, 235 Information and Firing Order : Engine Facts.com
http://enginefacts.com/chevrolet235.php

Langdon's Stovebolt Engine Co. | Specializing in GM 6 Cylinder High Performance Parts
http://www.stoveboltengineco.com/
Posted via Mobile Device

1Bad62Pro/Street · 09-26-2010, 01:48 PM

Check these awesome books as well guys:

SSedan64 · 09-28-2010, 04:09 AM

Another great link >> http://www.chevytech.com/ click on the Pic or #'s of Head or Block links.

olay198912 · 10-26-2010, 11:25 PM

In support of the development of information technology, the centre also provides a platform at its web site (http://serc.ed.gov.hk) for sharing of ideas, experiences and teaching materials through a well designed and structured digital repository.

*stich626* · 10-27-2010, 05:53 AM

I like this thread,
now is there a web site of the hollanger exchange manuals,
and if so, give it up
thanks

Mxracer202 · 11-07-2010, 09:07 PM

can't believe no one has added this one yet by far probably the easiest, just type it in and it will find it.

Inline 6
http://www.adchevy.com/tools/castinglookup/

1Bad62Pro/Street · 05-02-2011, 09:37 AM

Jegs Tech Articles http://www.jegs.com/s/tech-articles/tech-landing.html

Summit Racing Tech Articles http://www.summitracing.com/expertadvice/techarticles/

aboz · 06-06-2011, 06:37 PM

Thanks for that tec info. You say you have a rebuilt inline six? 230 or 250? Any pix? Would save me a trip to Florida if yer price is right!

1Bad62Pro/Street · 06-06-2011, 06:41 PM

Quote:

Originally Posted by aboz

Thanks for that tec info. You say you have a rebuilt inline six? 230 or 250? Any pix? Would save me a trip to Florida if yer price is right!

Well bud, just talked to my father about the 250 I6 and he said he started to rebuild it but stopped.
It's in good shape just needs bored. And needs an intake.
If ya interested just hollar. Just sitting in the shop. He can hollar at ya more about it over the phone if your interested. And I can take some pics of it.
It came out of a 73 Nova. Thats where I got my steering columb and wiring from
250ci (4.1L) I6
73 Nova:
http://en.wikipedia.org/wiki/Chevrol...2.80.931974.29

aboz · 06-06-2011, 06:53 PM

I have a water cooled Clifford intake. Haven't yet taken on a ground up engine build. What's been done and what else besides boring the cylinders would I have to do? Has the bottom end been rebuilt? Any more parts to buy?

1Bad62Pro/Street · 06-06-2011, 07:11 PM

Quote:

Originally Posted by aboz

I have a water cooled Clifford intake. Haven't yet taken on a ground up engine build. What's been done and what else besides boring the cylinders would I have to do? Has the bottom end been rebuilt? Any more parts to buy?

It's good complete rebuildable engine other than the intake.
The Clifford intake will be perfect for the motor.
So it would need bored and total rebuild.
Has been cleaned and ready for the machine shop.
She will be a good running dependable engine when it will be done.

1Bad62Pro/Street · 06-06-2011, 07:22 PM

Dad say $300 green stamps. If you are interested.

1Bad62Pro/Street · 09-09-2011, 11:11 PM

Engine I.D. and Codes - YearOne.com
http://www.yearone.com/updatedsingle...ngineinfo1.asp
http://www.yearone.com/updatedsingle...ngineinfo2.asp
http://www.yearone.com/updatedsingle...ngineinfo3.asp
http://www.yearone.com/updatedsingle...ngineinfo4.asp
http://www.yearone.com/updatedsingle...ngineinfo5.asp
http://www.yearone.com/updatedsingle...ngineinfo6.asp

nervous71 · 09-22-2011, 03:36 PM

I've been researching all my casting numbers, but I have something I hope an avid expert can help with.

My heads have cast numbers of 3998991, roughly '68 to '76ish 350 1.72/1.50 valves. The thing I need help with is, and I don't know if it matters, one head has a stamp date of A254, the other, a stamp of P104.

As far as my research has gone, I know A= January, 25= day of month, and 4= year? '64?, '74? These are supposed to be the original heads, it was my dad’s truck bought off the show room floor in 1971.
And the P, what’s that mean?

Appreciate some clarification.

1Bad62Pro/Street · 09-22-2011, 04:31 PM

On Cylinder Heads the Date codes for small- and big-block V8 cylinder heads are usually found next to the casting number underneath the valve cover. The dates are, in most cases, alphanumeric.
Small- and big-block V8 head casting numbers are found underneath the rocker cover, usually between rocker arm pedestals.

Casting #’s. & Date codes are cast on top of head (under valve cover) between second & third rocker arms from left. First letter (A through M) is month (Jan through Dec) (I not used), one or two digits for day of month, one digit for last digit of year cast. Lightweight castings (not for hi-perf use) have “scalloped” edge below exhaust ports; regular have straight edge

Chevy has used various raised casting symbols on the ends of smallblock cylinder heads, which on some heads are duplicated in the rocker arm valley. These symbols were used to indicate the type of features found on those particular heads. The same symbol can be found on different heads with different casting numbers. These symbols are helpful, but should not be solely relied upon to determine what type of heads you have or what features they have.

YEARS CASTING# CID Intake Exhaust CC
1968-69 3998991 307 1.72 1.5 69
1970-76 3998991 350 1.72 1.5 75

Small Block Chevy Cylinder Head Identification
http://67-72chevytrucks.com/vboard/s...d.php?t=353542

http://www.ajgeneral.com/sbc_cylinde...sting_numbers/

http://chevytech.info/3c3998991.html

SBC cylinder head identification
http://www.crankshaftcoalition.com/w...identification

Very Good Info:
http://www.mre-books.com/chevy/engin...der_heads.html

1Bad62Pro/Street · 09-22-2011, 04:35 PM

Chevrolet Small Block Engines – Factory Casting Numbers and Code
This book covers 1955-99 Chevrolet Small Block V8 Casting Numbers – Blocks, Heads, Intakes, Exhaust, and Water Pumps.
To help identify parts for your Chevrolet small Block v 8 project.
http://www.oltrucks.com/catalog/prod...roducts_id=152

01-22-2010, 09:59 PM	#1
PhilaTruck Right on the line, baby! Join Date: Oct 2003 Location: Phila, PA 19130 Posts: 1,486	Online engine resources (casting numbers, calculators, etc.) Please add your favorite drive train references here (Here are some of mine.): V8 head and engine casting number info: mortec.com I6 casting numbers: classictruckshop.com Calculators: wallaceracing.com/Calculators SBC head flow data: purplesagetradingpost.com (These guys are really cool.) __________________ 83 GMC 406 th400/3.73 Eaton Truetrac posi, headers, x pipe, & racePros. Tubular control arms, lowering rear springs, caltracs. Still ugly, but getting built right, although slowly Click and scroll down for site vendors! Subscribe here! Last edited by PhilaTruck; 01-24-2010 at 06:41 PM.

01-22-2010, 11:25 PM	#2
Ticker Account Suspended Join Date: Oct 2009 Location: Sammamish, WA Posts: 2,404	Re: Online engine resources (casting numbers, calculators, etc.) Stan Weiss' - Cylinder Head Flow Data at 28 Inches of Water Engine Compression Ratio Calculator Last edited by Ticker; 01-22-2010 at 11:27 PM.

01-30-2010, 10:14 PM	#3
PhilaTruck Right on the line, baby! Join Date: Oct 2003 Location: Phila, PA 19130 Posts: 1,486	Re: Online engine resources (casting numbers, calculators, etc.) Drilling steam holes in heads for 400s: Posted by Beuford (here's the post) and here's the link to Gregsengines. __________________ 83 GMC 406 th400/3.73 Eaton Truetrac posi, headers, x pipe, & racePros. Tubular control arms, lowering rear springs, caltracs. Still ugly, but getting built right, although slowly Click and scroll down for site vendors! Subscribe here!

02-02-2010, 01:01 PM	#4
Ticker Account Suspended Join Date: Oct 2009 Location: Sammamish, WA Posts: 2,404	Holley Carb Resources Holley Technical Library Online Holley Carb Sizer Holley Carb Selection Guide (PDF) Locating the Holley Carb List Number List of Holley Carbs by Part Number (PDF)

02-05-2010, 02:56 PM	#5
Ticker Account Suspended Join Date: Oct 2009 Location: Sammamish, WA Posts: 2,404	Re: Online engine resources (casting numbers, calculators, etc.) Cam References CompCams Cam Timing Tutorial

02-08-2010, 01:23 AM	#6
67ss&99ss Andy Join Date: Feb 2009 Location: Cleveland, GA Posts: 224	Re: Online engine resources (casting numbers, calculators, etc.) Pat Kelly's dynamic compression ratio information and calculator. http://www.empirenet.com/pkelley2/DynamicCR.html __________________ 1967 Camaro SS 406\|522hp/514ft lbs\|M20 Muncie\|3.73s\|Posi 1969 CST/10 383\|Aisin AR5 5 speed 1972 K5 350\|Turbo 350 4x4 2005 Duramax 2500HD 4x4

03-21-2010, 04:56 PM	#7
Mxracer202 Registered User Join Date: Aug 2009 Location: RC, South Dakota. Posts: 164	Re: Online engine resources (casting numbers, calculators, etc.) Has TONS of info on I6 http://Chuckthetruck.com\ I6 tech and tips, Where to find the engine code. http://www.jalopyjournal.com/forum/s...d.php?t=184304 __________________ 58 Jeep willys pickup 67 K10 4x4- soon to be trail truck TROUBLE MAKER RACING "If you can't stand BEHIND our troops, please stand in FRONT of them." Last edited by Mxracer202; 11-08-2010 at 08:45 PM.

08-21-2010, 07:36 PM	#8
VetteVet Msgt USAF Ret Join Date: Jan 2005 Location: Kalamazoo, Michigan Posts: 8,703	Re: Online engine resources (casting numbers, calculators, etc.) I can't believe no one posted this. http://www.nastyz28.com/sbcmenu.php __________________ VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative.

09-02-2010, 09:14 AM	#9
1Bad62Pro/Street "Where were you in '62?" Join Date: Jul 2004 Location: Cleveland County, North Cackalacky Posts: 5,013	Re: Online engine resources (casting numbers, calculators, etc.) Big Block Chevy Cylinder Head Identification 1Bad62Pro/Street http://67-72chevytrucks.com/vboard/s...d.php?t=357306 Big Block Chevy Engine Block Identification 1Bad62Pro/Street http://67-72chevytrucks.com/vboard/s...d.php?t=357304 Small Block Chevy Cylinder Head Identification 1Bad62Pro/Street http://67-72chevytrucks.com/vboard/s...d.php?t=353542 Small Block Chevy Engine Block Identification 1Bad62Pro/Street http://67-72chevytrucks.com/vboard/s...d.php?t=353538 Chevy Six Cylinder Casting Numbers 1Bad62Pro/Street http://67-72chevytrucks.com/vboard/s...d.php?t=356268 ((((Transmission Specs )))) 1Bad62Pro/Street http://67-72chevytrucks.com/vboard/s...d.php?t=390542 Camshaft Tips & Definitions 1Bad62Pro/Street http://67-72chevytrucks.com/vboard/s...d.php?t=347969 Ford 9" Rear Axle Information 1Bad62Pro/Street http://67-72chevytrucks.com/vboard/s...d.php?t=358081 Ford 9-inch Rear End Length Data 1Bad62Pro/Street http://67-72chevytrucks.com/vboard/s...d.php?t=354261 The (BEST) and (WORST) Small Block Chevys Engines Of All Time 1Bad62Pro/Street http://67-72chevytrucks.com/vboard/s...d.php?t=386581 The History Of The Chevy Small-Block Motor 1Bad62Pro/Street http://67-72chevytrucks.com/vboard/s...d.php?t=354680 The (BEST) and (WORST) Small Block Chevys Engines Of All Time http://67-72chevytrucks.com/vboard/s...d.php?t=386581 __________________ PROJECT: "FULL METAL YELLOW JACKET" 1962 Chevy C-10 Stepside Shortbed Nostalgia Pro/Street Pickup Truck PROJECT: "FULL METAL YELLOW JACKET Build Thread What Are You Workin' On? - 1Bad62ChevyPickup PROJECT: "TYRANNORAMBLER REX" 1969 AMC Rambler American Nostalgia Pro/Street Youtube Channel: Father Son Projects Youtube Channel: 2TIMOTHY2FITHTEEN "North and South Carolina Folks Click Here!" (((( ~ I have Parts For Sale & Miscellaneous Stuff ~ )))) "Well being as there's no other place around the place, I reckon this must be the place, I reckon...Nyuk Nyuk Nyuk" -Curly Howard Ph.D. Last edited by 1Bad62Pro/Street; 10-07-2012 at 05:56 PM.

09-26-2010, 08:31 AM	#10
1Bad62Pro/Street "Where were you in '62?" Join Date: Jul 2004 Location: Cleveland County, North Cackalacky Posts: 5,013	Re: Online engine resources (casting numbers, calculators, etc.) BoxWrench V8 Engine Specs-Torque Specs-Firing Order-Block Cylinder Numbering-Distributor Rotation http://www.boxwrench.net/specs_index.htm Chevy 235 Inline 6 Cylinder Engine Specs, 235 Information and Firing Order : Engine Facts.com http://enginefacts.com/chevrolet235.php Langdon's Stovebolt Engine Co. \| Specializing in GM 6 Cylinder High Performance Parts http://www.stoveboltengineco.com/ Posted via Mobile Device __________________ PROJECT: "FULL METAL YELLOW JACKET" 1962 Chevy C-10 Stepside Shortbed Nostalgia Pro/Street Pickup Truck PROJECT: "FULL METAL YELLOW JACKET Build Thread What Are You Workin' On? - 1Bad62ChevyPickup PROJECT: "TYRANNORAMBLER REX" 1969 AMC Rambler American Nostalgia Pro/Street Youtube Channel: Father Son Projects Youtube Channel: 2TIMOTHY2FITHTEEN "North and South Carolina Folks Click Here!" (((( ~ I have Parts For Sale & Miscellaneous Stuff ~ )))) "Well being as there's no other place around the place, I reckon this must be the place, I reckon...Nyuk Nyuk Nyuk" -Curly Howard Ph.D.

09-26-2010, 01:48 PM	#11
1Bad62Pro/Street "Where were you in '62?" Join Date: Jul 2004 Location: Cleveland County, North Cackalacky Posts: 5,013	Re: Online engine resources (casting numbers, calculators, etc.) Check these awesome books as well guys: Attached Images __________________ PROJECT: "FULL METAL YELLOW JACKET" 1962 Chevy C-10 Stepside Shortbed Nostalgia Pro/Street Pickup Truck PROJECT: "FULL METAL YELLOW JACKET Build Thread What Are You Workin' On? - 1Bad62ChevyPickup PROJECT: "TYRANNORAMBLER REX" 1969 AMC Rambler American Nostalgia Pro/Street Youtube Channel: Father Son Projects Youtube Channel: 2TIMOTHY2FITHTEEN "North and South Carolina Folks Click Here!" (((( ~ I have Parts For Sale & Miscellaneous Stuff ~ )))) "Well being as there's no other place around the place, I reckon this must be the place, I reckon...Nyuk Nyuk Nyuk" -Curly Howard Ph.D. Last edited by 1Bad62Pro/Street; 06-16-2011 at 10:16 PM.

09-28-2010, 04:09 AM	#12
SSedan64 Registered User Join Date: Oct 2008 Location: Macon, GA. Posts: 89	Re: Online engine resources (casting numbers, calculators, etc.) Another great link >> http://www.chevytech.com/ click on the Pic or #'s of Head or Block links.

10-26-2010, 11:25 PM	#13
olay198912 Registered User Join Date: Oct 2010 Location: putian Posts: 3	Re: Online engine resources (casting numbers, calculators, etc.) In support of the development of information technology, the centre also provides a platform at its web site (http://serc.ed.gov.hk) for sharing of ideas, experiences and teaching materials through a well designed and structured digital repository. __________________ moncler jackets Moncler Moncler Coats

10-27-2010, 05:53 AM	#14
stich626 Account Suspended Join Date: Sep 2010 Location: hingham ma Posts: 1,721	Re: Online engine resources (casting numbers, calculators, etc.) I like this thread, now is there a web site of the hollanger exchange manuals, and if so, give it up thanks

11-07-2010, 09:07 PM	#15
Mxracer202 Registered User Join Date: Aug 2009 Location: RC, South Dakota. Posts: 164	Re: Online engine resources (casting numbers, calculators, etc.) can't believe no one has added this one yet by far probably the easiest, just type it in and it will find it. Inline 6 http://www.adchevy.com/tools/castinglookup/ __________________ 58 Jeep willys pickup 67 K10 4x4- soon to be trail truck TROUBLE MAKER RACING "If you can't stand BEHIND our troops, please stand in FRONT of them."



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05-02-2011, 09:37 AM	#16
1Bad62Pro/Street "Where were you in '62?" Join Date: Jul 2004 Location: Cleveland County, North Cackalacky Posts: 5,013	Re: Online engine resources (casting numbers, calculators, etc.) Jegs Tech Articles http://www.jegs.com/s/tech-articles/tech-landing.html Summit Racing Tech Articles http://www.summitracing.com/expertadvice/techarticles/ __________________ PROJECT: "FULL METAL YELLOW JACKET" 1962 Chevy C-10 Stepside Shortbed Nostalgia Pro/Street Pickup Truck PROJECT: "FULL METAL YELLOW JACKET Build Thread What Are You Workin' On? - 1Bad62ChevyPickup PROJECT: "TYRANNORAMBLER REX" 1969 AMC Rambler American Nostalgia Pro/Street Youtube Channel: Father Son Projects Youtube Channel: 2TIMOTHY2FITHTEEN "North and South Carolina Folks Click Here!" (((( ~ I have Parts For Sale & Miscellaneous Stuff ~ )))) "Well being as there's no other place around the place, I reckon this must be the place, I reckon...Nyuk Nyuk Nyuk" -Curly Howard Ph.D.

06-06-2011, 06:37 PM	#17
aboz Registered User Join Date: Feb 2009 Location: indian trail, nc Posts: 192	Re: Online engine resources (casting numbers, calculators, etc.) Thanks for that tec info. You say you have a rebuilt inline six? 230 or 250? Any pix? Would save me a trip to Florida if yer price is right! __________________ ABOZ

06-06-2011, 06:53 PM	#19
aboz Registered User Join Date: Feb 2009 Location: indian trail, nc Posts: 192	Re: Online engine resources (casting numbers, calculators, etc.) I have a water cooled Clifford intake. Haven't yet taken on a ground up engine build. What's been done and what else besides boring the cylinders would I have to do? Has the bottom end been rebuilt? Any more parts to buy? __________________ ABOZ

06-06-2011, 07:22 PM	#21
1Bad62Pro/Street "Where were you in '62?" Join Date: Jul 2004 Location: Cleveland County, North Cackalacky Posts: 5,013	Re: Online engine resources (casting numbers, calculators, etc.) Dad say $300 green stamps. If you are interested. __________________ PROJECT: "FULL METAL YELLOW JACKET" 1962 Chevy C-10 Stepside Shortbed Nostalgia Pro/Street Pickup Truck PROJECT: "FULL METAL YELLOW JACKET Build Thread What Are You Workin' On? - 1Bad62ChevyPickup PROJECT: "TYRANNORAMBLER REX" 1969 AMC Rambler American Nostalgia Pro/Street Youtube Channel: Father Son Projects Youtube Channel: 2TIMOTHY2FITHTEEN "North and South Carolina Folks Click Here!" (((( ~ I have Parts For Sale & Miscellaneous Stuff ~ )))) "Well being as there's no other place around the place, I reckon this must be the place, I reckon...Nyuk Nyuk Nyuk" -Curly Howard Ph.D.

09-09-2011, 11:11 PM	#22
1Bad62Pro/Street "Where were you in '62?" Join Date: Jul 2004 Location: Cleveland County, North Cackalacky Posts: 5,013	Re: Online engine resources (casting numbers, calculators, etc.) Engine I.D. and Codes - YearOne.com http://www.yearone.com/updatedsingle...ngineinfo1.asp http://www.yearone.com/updatedsingle...ngineinfo2.asp http://www.yearone.com/updatedsingle...ngineinfo3.asp http://www.yearone.com/updatedsingle...ngineinfo4.asp http://www.yearone.com/updatedsingle...ngineinfo5.asp http://www.yearone.com/updatedsingle...ngineinfo6.asp __________________ PROJECT: "FULL METAL YELLOW JACKET" 1962 Chevy C-10 Stepside Shortbed Nostalgia Pro/Street Pickup Truck PROJECT: "FULL METAL YELLOW JACKET Build Thread What Are You Workin' On? - 1Bad62ChevyPickup PROJECT: "TYRANNORAMBLER REX" 1969 AMC Rambler American Nostalgia Pro/Street Youtube Channel: Father Son Projects Youtube Channel: 2TIMOTHY2FITHTEEN "North and South Carolina Folks Click Here!" (((( ~ I have Parts For Sale & Miscellaneous Stuff ~ )))) "Well being as there's no other place around the place, I reckon this must be the place, I reckon...Nyuk Nyuk Nyuk" -Curly Howard Ph.D.

09-22-2011, 03:36 PM	#23
nervous71 Registered User Join Date: Dec 2010 Location: West Richland, WA Posts: 13	Re: Online engine resources (casting numbers, calculators, etc.) I've been researching all my casting numbers, but I have something I hope an avid expert can help with. My heads have cast numbers of 3998991, roughly '68 to '76ish 350 1.72/1.50 valves. The thing I need help with is, and I don't know if it matters, one head has a stamp date of A254, the other, a stamp of P104. As far as my research has gone, I know A= January, 25= day of month, and 4= year? '64?, '74? These are supposed to be the original heads, it was my dad’s truck bought off the show room floor in 1971. And the P, what’s that mean? Appreciate some clarification.

09-22-2011, 04:31 PM	#24
1Bad62Pro/Street "Where were you in '62?" Join Date: Jul 2004 Location: Cleveland County, North Cackalacky Posts: 5,013	Re: Online engine resources (casting numbers, calculators, etc.) On Cylinder Heads the Date codes for small- and big-block V8 cylinder heads are usually found next to the casting number underneath the valve cover. The dates are, in most cases, alphanumeric. Small- and big-block V8 head casting numbers are found underneath the rocker cover, usually between rocker arm pedestals. Casting #’s. & Date codes are cast on top of head (under valve cover) between second & third rocker arms from left. First letter (A through M) is month (Jan through Dec) (I not used), one or two digits for day of month, one digit for last digit of year cast. Lightweight castings (not for hi-perf use) have “scalloped” edge below exhaust ports; regular have straight edge Chevy has used various raised casting symbols on the ends of smallblock cylinder heads, which on some heads are duplicated in the rocker arm valley. These symbols were used to indicate the type of features found on those particular heads. The same symbol can be found on different heads with different casting numbers. These symbols are helpful, but should not be solely relied upon to determine what type of heads you have or what features they have. YEARS CASTING# CID Intake Exhaust CC 1968-69 3998991 307 1.72 1.5 69 1970-76 3998991 350 1.72 1.5 75 Small Block Chevy Cylinder Head Identification http://67-72chevytrucks.com/vboard/s...d.php?t=353542 http://www.ajgeneral.com/sbc_cylinde...sting_numbers/ http://chevytech.info/3c3998991.html SBC cylinder head identification http://www.crankshaftcoalition.com/w...identification Very Good Info: http://www.mre-books.com/chevy/engin...der_heads.html __________________ PROJECT: "FULL METAL YELLOW JACKET" 1962 Chevy C-10 Stepside Shortbed Nostalgia Pro/Street Pickup Truck PROJECT: "FULL METAL YELLOW JACKET Build Thread What Are You Workin' On? - 1Bad62ChevyPickup PROJECT: "TYRANNORAMBLER REX" 1969 AMC Rambler American Nostalgia Pro/Street Youtube Channel: Father Son Projects Youtube Channel: 2TIMOTHY2FITHTEEN "North and South Carolina Folks Click Here!" (((( ~ I have Parts For Sale & Miscellaneous Stuff ~ )))) "Well being as there's no other place around the place, I reckon this must be the place, I reckon...Nyuk Nyuk Nyuk" -Curly Howard Ph.D. Last edited by 1Bad62Pro/Street; 04-09-2013 at 02:11 PM.

09-22-2011, 04:35 PM	#25
1Bad62Pro/Street "Where were you in '62?" Join Date: Jul 2004 Location: Cleveland County, North Cackalacky Posts: 5,013	Re: Online engine resources (casting numbers, calculators, etc.) Chevrolet Small Block Engines – Factory Casting Numbers and Code This book covers 1955-99 Chevrolet Small Block V8 Casting Numbers – Blocks, Heads, Intakes, Exhaust, and Water Pumps. To help identify parts for your Chevrolet small Block v 8 project. http://www.oltrucks.com/catalog/prod...roducts_id=152 __________________ PROJECT: "FULL METAL YELLOW JACKET" 1962 Chevy C-10 Stepside Shortbed Nostalgia Pro/Street Pickup Truck PROJECT: "FULL METAL YELLOW JACKET Build Thread What Are You Workin' On? - 1Bad62ChevyPickup PROJECT: "TYRANNORAMBLER REX" 1969 AMC Rambler American Nostalgia Pro/Street Youtube Channel: Father Son Projects Youtube Channel: 2TIMOTHY2FITHTEEN "North and South Carolina Folks Click Here!" (((( ~ I have Parts For Sale & Miscellaneous Stuff ~ )))) "Well being as there's no other place around the place, I reckon this must be the place, I reckon...Nyuk Nyuk Nyuk" -Curly Howard Ph.D.

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