How do I stroke it? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bigcarguy · 08-14-2002, 03:22 PM

hehe.... Anyway, what all is involved in stroking a 350 and making it a 383? Do i just replace the crank, or do I have to bore the cylinders and get new pistons/rods? Who makes a good stroker kit?

68 with 350 TPI · 08-14-2002, 03:38 PM

1)Well you will need pistons with the right height at the pin to fit.
2) a 400 crank with the jurnals turned down to fit a 350 or a aftermarket one like scat etc.
3) boring out the block.
4) taking some metal away from the block to clear the stroke.
5) most of the time you will also need to do some grinding on the rod bolts to get it to clear.
5) a cam that will work better with the 383 combo instead of what you would run with a 350.
6) you will need to balance it and use a flywheel like a 400.

diggin69 · 08-14-2002, 03:38 PM

stroking, ummmm lets see first you do the four finger drag over the vasaline.....no wait you have to have the 350 block line bored to take a 400 crank & connecting rods, then have screw in studs put in for the heads, try P.A.W. performance-autowmotive-wholesale.....they have a kit not sure on the $$$$ & you have to get the 350 machined to take 400 journals also....I think...been a couple since I built 1 I think thats about it thow..........

Beast388 · 08-14-2002, 03:52 PM

Speed-O-Motive has some good kits.

www.speedomotive.com

Tracy Focht · 08-14-2002, 04:32 PM

These guys have great stroker kits as well.
stroker

Longhorn Man · 08-14-2002, 05:49 PM

Or you could just build the 400 that you rape for a crank, and save money and get more torque.

nate68 · 08-14-2002, 06:42 PM

i built a 400 'cause it was easier for me. 23 more cubic inches (406) has got to make some kind of difference. super chevy, hot rod, etc. need to do dyno tests and compare a 383 to a 406 and see what the differences in power are.
either way make sure you use 5.7 (350) or larger rods. if you're willing to spend the extra dough get 6" rods

>X< · 08-14-2002, 09:18 PM

thats just sick

08-14-2002, 03:22 PM	#1
bigcarguy Finally a Bulldawg Join Date: Apr 2001 Location: Athens, Georgia Posts: 220	How do I stroke it? hehe.... Anyway, what all is involved in stroking a 350 and making it a 383? Do i just replace the crank, or do I have to bore the cylinders and get new pistons/rods? Who makes a good stroker kit? __________________ Ah yes, the college life. School all morning, work all night, study when ya can. Uh...

08-14-2002, 03:38 PM	#2
68 with 350 TPI Registered User Join Date: May 2002 Location: Wingate NC Posts: 456	1)Well you will need pistons with the right height at the pin to fit. 2) a 400 crank with the jurnals turned down to fit a 350 or a aftermarket one like scat etc. 3) boring out the block. 4) taking some metal away from the block to clear the stroke. 5) most of the time you will also need to do some grinding on the rod bolts to get it to clear. 5) a cam that will work better with the 383 combo instead of what you would run with a 350. 6) you will need to balance it and use a flywheel like a 400. __________________ Life is good with a 6-71 supercharged 355 in a 72 camaro

08-14-2002, 03:38 PM	#3
diggin69 Southern but in Ohio!!!! Join Date: Jan 2002 Location: Eaton,Oh. 45320 Posts: 467	stroking, ummmm lets see first you do the four finger drag over the vasaline.....no wait you have to have the 350 block line bored to take a 400 crank & connecting rods, then have screw in studs put in for the heads, try P.A.W. performance-autowmotive-wholesale.....they have a kit not sure on the $$$$ & you have to get the 350 machined to take 400 journals also....I think...been a couple since I built 1 I think thats about it thow.......... __________________ 1969 C/10 3/4 ton 4x4 longbed custom, frame made from a 79 1972 custom-10 half/ton longbed 1980 1/2 ton 4x4 all original 350/350/205 with air Eaton,Oh rebelryder@hotmail.com

08-14-2002, 03:52 PM	#4
Beast388 Suburbans RULE! Join Date: Jan 2000 Location: Clinton, IA 52732 Posts: 689	Speed-O-Motive has some good kits. www.speedomotive.com __________________ --Ben 71 GMC Suburban 4X4 The "Beast" 388 CID Stroker, TH350, NP205, 8-lug D44, 14BFF w/ Detroit, 4.10:1 gears, 4-Wheel Disks 4" Lift, 35" MT/R's.

08-14-2002, 06:42 PM	#7
nate68 Registered User Join Date: Jan 2000 Location: ca Posts: 1,110	i built a 400 'cause it was easier for me. 23 more cubic inches (406) has got to make some kind of difference. super chevy, hot rod, etc. need to do dyno tests and compare a 383 to a 406 and see what the differences in power are. either way make sure you use 5.7 (350) or larger rods. if you're willing to spend the extra dough get 6" rods __________________ 68 short step, 406/700r4, 9" w/discs.

08-14-2002, 04:32 PM	#5
Tracy Focht Registered User Join Date: Dec 1999 Location: Stillwater, OK 74075 Posts: 2,936	These guys have great stroker kits as well. stroker

08-14-2002, 05:49 PM	#6
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Or you could just build the 400 that you rape for a crank, and save money and get more torque.

08-14-2002, 09:18 PM	#8
>X< registered IWATA user Join Date: Feb 2002 Location: Baton Rouge Posts: 4,483	thats just sick __________________ -'63 Ford Fairlane 500 coupe, v8, auto, faded and rusty. awaiting built roller 302 and some flat black -'99 Honda Prelude. vtech/5spd. no pipe, no intake, bone stock. awaiting new top end. -01 GMC Yukon SLT 5.3 dented and scratched with a noisy tranny. Take off that Von Dutch hat before i stab you with a 000 Mack.



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