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#329674 10/28/2007 11:59 PM
Joined: Nov 2005
Posts: 140
J
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I pulled a small block from a 1971 Gmc a few years ago and I was wondering what the specs are. Here is the numcers I found on the motor.
38 GM
3970010
This may not be the original motor that came in the gmc. I plan on rebuilding this motor to put in my 1948 Chevy 3600 wrecker.
Thanks for any help


Now boltless but looking
1951 F-1 350/350
1965 Mustang 355 glide
1971 F-100 401 fe it hates me
1972 Maverick 302 c4
Joined: Jul 2006
Posts: 40
T
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Jarrod;
3970010 chevrolet blocks were used from 1960-1980 with some being 2bolt and some being 4bolt. If you have a correct year motor out of a 71 GMC, I've never seen anything but a 4bolt in a 69-72 truck. They are 350 c.i., 250 horsepower, 8.5:1 comp., 4bc.
I could tell you if it was a correct year motor with the letters and numbers off of the front pad, or by the date code off the back of the motor.

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J
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I'll get you those numbers this evening.


Now boltless but looking
1951 F-1 350/350
1965 Mustang 355 glide
1971 F-100 401 fe it hates me
1972 Maverick 302 c4
Jarred #330176 10/29/2007 10:25 PM
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Here they are for the motor out of the GMC Vo811TYZ
These are the numbers from the motor in my 63 C-10.
V063oPV


Now boltless but looking
1951 F-1 350/350
1965 Mustang 355 glide
1971 F-100 401 fe it hates me
1972 Maverick 302 c4
Joined: Jul 2006
Posts: 40
T
Shop Shark
Shop Shark
T Offline
Joined: Jul 2006
Posts: 40
Jarred;
You hit me up with some dandys for numbers!
There are no TYZ codes for 71, but for 70 there is a TAZ
For 63, there are no PV codes, there are PG and PK codes for 292 6cyl. Check those numbers again to make sure

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J
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These are not the original motors that came in these trucks.


Now boltless but looking
1951 F-1 350/350
1965 Mustang 355 glide
1971 F-100 401 fe it hates me
1972 Maverick 302 c4

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