Cowl Data plate and SPID - The 1947 - Present Chevrolet & GMC Truck Message Board Network

cruisinthe34 · 01-07-2016, 09:52 AM

I finally brought the new project home, and looking at the SPID, mine is best classified as BASIC TRUCK:

My question is does the Cowl data plate (which I have not yet discovered) contain only the same information as the SPID. I'm trying to determine the rearend gear ratio without crawling under the truck to look on the tail of the rearend. Actually, not the tail, but the snout as I understand it.

bruceman1968 · 01-07-2016, 10:02 AM

Cruisinthe34, These trucks did not have a cowl tag. You can tell what came in your truck by what's not listed on your SPID. Your truck came with a 250cid, 3-speed manual and a 3:73 open rear end. That was the standard driveline for a 6cyl truck. If you had anything different it would be listed on the SPID as options. Very nice looking truck BTW.

cruisinthe34 · 01-07-2016, 10:07 AM

Perfect !!!! That 3:73 saves me from having to rebuild or put a new rear end under this. Thats Exactly what I wanted to know. Thanks !

davepl · 01-07-2016, 01:02 PM

Pimped out with the painted rear bumper I see. 1-pct'er.

Which brings to mind "What did you have if not that?". I've seen Nissan 1/4-ton trucks with no bumper because it was optional, but I thought we all at least got a bumper, and if not painted, and certainly not chrome, then what was "standard"?

**NGN** · 01-07-2016, 01:07 PM

cruisinthe34 sorry for stepping in but I was wondering the same about the rear gear ratio I got out of a two wheel drive 72 Blazer that was stock with a 307 / 350 automatic.
Thanks Nick

bruceman1968 · 01-07-2016, 01:25 PM

Quote:

Originally Posted by davepl

Pimped out with the painted rear bumper I see. 1-pct'er.

Which brings to mind "What did you have if not that?". I've seen Nissan 1/4-ton trucks with no bumper because it was optional, but I thought we all at least got a bumper, and if not painted, and certainly not chrome, then what was "standard"?

Standard was no rear bumper. Standard front bumper was painted.

Quote:

Originally Posted by NGN

cruisinthe34 sorry for stepping in but I was wondering the same about the rear gear ratio I got out of a two wheel drive 72 Blazer that was stock with a 307 / 350 automatic.
Thanks Nick

3:07

cruisinthe34 · 01-07-2016, 01:32 PM

Well just ordered my 4/6 Drop kit from ECE. Nice folks. I was expecting to have to do a front disc brake conversion, but am told the '71 came with Front discs. So I ordered their Power brake booster set up and that should take care of that !

As for that beautiful Painted rear bumper I plan to remove it and do a rear roll pan like I have on my '41 F#rd:

We Don't Need no Stinking Bumpers !

Z10 · 01-07-2016, 01:48 PM

And I thought I had a low content SPID. You win!

**Joesjunk** · 01-07-2016, 03:51 PM

Quote:

Originally Posted by NGN

cruisinthe34 sorry for stepping in but I was wondering the same about the rear gear ratio I got out of a two wheel drive 72 Blazer that was stock with a 307 / 350 automatic.
Thanks Nick

I believe this would be a 3:73, not a 3:07

DeepOceanStepside · 01-07-2016, 04:04 PM

Our trucks are very similar in options, just color's and year that are different. And mine is/was a very rusty Michigan truck lol

bruceman1968 · 01-07-2016, 05:48 PM

Quote:

Originally Posted by joesjunk

i believe this would be a 3:73, not a 3:07

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**Joesjunk** · 01-07-2016, 06:20 PM

Quote:

Originally Posted by bruceman1968

Attachment 1485352

Thanks for that info

bruceman1968 · 01-07-2016, 06:29 PM

Quote:

Originally Posted by Joesjunk

Thanks for that info

Joe, I bet you were thinking 4-wheel drive. Right?

01-07-2016, 09:52 AM	#1
cruisinthe34 Registered User Join Date: Sep 2015 Location: Charleston, WV Posts: 228	Cowl Data plate and SPID I finally brought the new project home, and looking at the SPID, mine is best classified as BASIC TRUCK: My question is does the Cowl data plate (which I have not yet discovered) contain only the same information as the SPID. I'm trying to determine the rearend gear ratio without crawling under the truck to look on the tail of the rearend. Actually, not the tail, but the snout as I understand it. __________________ Steve My Build Thread: http://67-72chevytrucks.com/vboard/s...=morning+glory 1971 C10 Inline 6 250 700R4 "Marlene" 1934 Chevrolet Master Sedan 350 700R4 "Iris" 1941 Ford 1/2 Ton 5.0 H.O Roller C-4 "Rose" 2019 Honda Ridgeline

01-07-2016, 10:02 AM	#2
bruceman1968 Registered User Join Date: Oct 2009 Location: Tampa Bay Posts: 1,549	Re: Cowl Data plate and SPID Cruisinthe34, These trucks did not have a cowl tag. You can tell what came in your truck by what's not listed on your SPID. Your truck came with a 250cid, 3-speed manual and a 3:73 open rear end. That was the standard driveline for a 6cyl truck. If you had anything different it would be listed on the SPID as options. Very nice looking truck BTW. __________________ CHEVY/GMC VIN DECODERS

01-07-2016, 10:07 AM	#3
cruisinthe34 Registered User Join Date: Sep 2015 Location: Charleston, WV Posts: 228	Re: Cowl Data plate and SPID Perfect !!!! That 3:73 saves me from having to rebuild or put a new rear end under this. Thats Exactly what I wanted to know. Thanks ! __________________ Steve My Build Thread: http://67-72chevytrucks.com/vboard/s...=morning+glory 1971 C10 Inline 6 250 700R4 "Marlene" 1934 Chevrolet Master Sedan 350 700R4 "Iris" 1941 Ford 1/2 Ton 5.0 H.O Roller C-4 "Rose" 2019 Honda Ridgeline

01-07-2016, 01:02 PM	#4
davepl Registered User Join Date: Aug 2006 Location: Redmond, WA Posts: 6,332	Re: Cowl Data plate and SPID Pimped out with the painted rear bumper I see. 1-pct'er. Which brings to mind "What did you have if not that?". I've seen Nissan 1/4-ton trucks with no bumper because it was optional, but I thought we all at least got a bumper, and if not painted, and certainly not chrome, then what was "standard"? __________________ 1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible

01-07-2016, 01:07 PM	#5
NGN Registered User Join Date: Nov 2001 Location: Old Bridge,NJ Posts: 820	Re: Cowl Data plate and SPID cruisinthe34 sorry for stepping in but I was wondering the same about the rear gear ratio I got out of a two wheel drive 72 Blazer that was stock with a 307 / 350 automatic. Thanks Nick

01-07-2016, 01:32 PM	#7
cruisinthe34 Registered User Join Date: Sep 2015 Location: Charleston, WV Posts: 228	Re: Cowl Data plate and SPID Well just ordered my 4/6 Drop kit from ECE. Nice folks. I was expecting to have to do a front disc brake conversion, but am told the '71 came with Front discs. So I ordered their Power brake booster set up and that should take care of that ! As for that beautiful Painted rear bumper I plan to remove it and do a rear roll pan like I have on my '41 F#rd: We Don't Need no Stinking Bumpers ! __________________ Steve My Build Thread: http://67-72chevytrucks.com/vboard/s...=morning+glory 1971 C10 Inline 6 250 700R4 "Marlene" 1934 Chevrolet Master Sedan 350 700R4 "Iris" 1941 Ford 1/2 Ton 5.0 H.O Roller C-4 "Rose" 2019 Honda Ridgeline

01-07-2016, 01:48 PM	#8
Z10 Registered User Join Date: Aug 2012 Location: Midland, TX Posts: 1,267	Re: Cowl Data plate and SPID And I thought I had a low content SPID. You win! Attached Images __________________ 1969 RS/SS Z10 Camaro Pace coupe 1972 GMC Short Step buildhttp://67-72chevytrucks.com/vboard/s...=1#post6356218 1979 Mazda RX7 1979 Pontiac Trans Am WS6 & 1979 Pontiac Trans Am 10th Anniversary 1999 Honda Valkyrie 2006 Corvette Z06 2010 BMW 650i

01-07-2016, 04:04 PM	#10
DeepOceanStepside Registered User Join Date: Sep 2015 Location: Saginaw, MI Posts: 139	Re: Cowl Data plate and SPID Our trucks are very similar in options, just color's and year that are different. And mine is/was a very rusty Michigan truck lol __________________ 1970 Base Step Side Dark Olive 250 3ott restoration 1972 k5 4x4 250 3ott project 1970 long bed light olive 283 th350 driver SOLD



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