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Old 08-11-2005, 09:21 PM   #1
newin72
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help! what engine is this?

my dad bought this suburban new in 1972. He has always considered it a 350 motor. but tonight, when I went to 3 different auto parts stores, the motor mount didn't match.

so for kicks and giggles, we went and got the motor mounts for a 327/305 and it was the right one!

what is the best quickest way to find out what motor this is?

it is out of the truck right now awaiting the installation of my new ZZ4, but I don't know where to start to find out what I've got.

Thanks!
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Old 08-11-2005, 09:26 PM   #2
Randy70C-10
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There is a casting number at the top rear of the engine (drivers side) right behing the intake, write that number down and post it, we'll tell ya what it is.
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Old 08-11-2005, 09:30 PM   #3
newin72
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this number? 3970010
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Old 08-11-2005, 09:30 PM   #4
Longhorn Man
its all about the +6 inches
 
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it shouldn't matter as far as motor mounts go. The parts guys were probably giving you later model motor mounts.
Is there an engine option listing in the glove box? If it is original, then we should be able to figure it out real quick without getting our hands greasy.
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Old 08-11-2005, 09:35 PM   #5
newin72
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hands stay greasy!

I am assuming it is original... but you know how assume is spelled!

I'd like to get original off motor just to make sure.

thanks so much guys!
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Old 08-11-2005, 09:36 PM   #6
tnblazerk5
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its a 69-79 350 , low power 185 hight power 370 , 2 or 4 bolt mains ,came in cars /trucks/ vettes


heres where i got the info from
http://www.nastyz28.com/sbchevy/sblock.html#ecode
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Old 08-11-2005, 09:37 PM   #7
JIMs70GMC
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3970010 could be a 350, 302(camaro) or 327 (69 truck) , have 3 of them. www.mortec.com

I agree w/ Andy, parts guys were getting later model mounts.
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1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs
1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX
1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears
1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now.....
1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone.
1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed.

1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm

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Old 08-11-2005, 09:45 PM   #8
newin72
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V1115TDJ

this is the number off the front of the block, in front of the passenger side head.
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Old 08-11-2005, 09:55 PM   #9
newin72
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strange, o'reillys AND Autozone have the wrong numbers in their computer AND in their books...

oh well, stranger things have happened.
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Old 08-11-2005, 09:56 PM   #10
newin72
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oh, and Thanks for your help! you guys are awesome!
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Old 08-11-2005, 10:37 PM   #11
Longhorn Man
its all about the +6 inches
 
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Quote:
Originally Posted by newin72
strange, o'reillys AND Autozone have the wrong numbers...oh well, stranger things have happened.
Yeah...they've been right once or twice!
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Old 08-11-2005, 11:20 PM   #12
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Quote:
Originally Posted by newin72
V1115TDJ

this is the number off the front of the block, in front of the passenger side head.
tdj is 72 truck 350 175 hp or 80 truck 350 165 hp
Don
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Old 08-11-2005, 11:41 PM   #13
arkracing
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Quote:
Originally Posted by dons454s
tdj is 72 truck 350 175 hp or 80 truck 350 165 hp
Don

Probably the original 350 since the Front Pad matches for a '72 350cid truck motor and the casting #is a 350. only thing left to do is check the date code on the block itself.
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