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Old 09-15-2002, 06:29 PM
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Post What engine is in my truck?

Ok, heres the scoop. I just recently aquired an 86 Chevy C20. I was told the tuck had a 350 in it, however a check of the vin reveals that in fact, the truck should have a 305 in it. When I questioned the person who gave me the truck, she said thats what her husband told her it had. Why don't I ask the husband you ask?...Because he died and that is the whole reason the woman was selling the truck. She is about 80 years old and not much of an engine expert.

Anyhow, how do I figure out which engine is in my truck? Where can I find the markings on the engine that will tell me what I have and where can I go to find out what those markings mean?

Any help would be appreciated....Thank you. <img src="graemlins/crash.gif" border="0" alt="[crash]" />

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Old 09-15-2002, 06:37 PM
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Look on the left rear bank (just in front of your bellhousing on the block behind head) it should read 5.0 G (305) or 5.7 G (350) (G means gasoline I believe). I have noticed that a lot of 305's have "305" in raised letters just in front of the left motor mount on the side of the block. (might be easier to see)

[ September 15, 2002: Message edited by: BstMech ]</p>
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Old 09-16-2002, 05:16 AM
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Thanks, when I get the truck back from the exhaust shop, I will check and let you know. Because my follow up questions are going to determine how I proceed to clean up that engine and breath new life into it.
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Old 09-16-2002, 06:21 AM
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www.mortec.com this will help you in identifying and were to find the numbers. Good luck!
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Old 09-16-2002, 06:52 AM
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Great link Maverick. Thanks.
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Old 09-16-2002, 07:34 PM
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Just wanted to say thank you guys. And I know the suspense is killing you all so here it is....

A 350!

Now, all I need to figure out is what to do with it.
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Old 05-11-2009, 06:06 AM
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What type of Engine?

My 2 pennies is ....check the VIN number, use to codes to varify the original configuration of the build of your vehicle.

I just went down reciently to my local chevy dealership, and had 2 keys cut from the VIN number that was used to get the Key Codes from GMC, my other keys were worn right out, and couldn't get a good cut from the originals, but was able to use VIN number to get specs.
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Old 05-11-2009, 09:44 AM
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Nice dig!!! Almost 7 years old.. LOL!!


It happens to the best of us sometimes.
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Old 10-25-2010, 10:03 PM
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Another Truck Engine Question

I am also having a hard time finding what year and HP that I have in a Chevy engine I bought and was only told it was a 350 Truck engine.
I can't find those markings on my truck engine.
What I do find there is letters GM and 3970010

On the block on the passenger side in front of the head on the tab I find the numbers T6F73830 and VO615TKB.
Can anyone please tell me the year and HP
Thanks,
aralph

Last edited by aralph; 10-25-2010 at 10:06 PM. Reason: addition
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Old 10-26-2010, 02:06 AM
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Code-- Year- CID-- Vehicle-- HP--- RPO- Trans-- Carb--- Comments
TKB---- 76-- 350-- Truck--- 165-- LS-9-------- 4-Brl------------------
TKB---- 77-- 350-- Truck--- 165-- LS-9-------- 4-Brl-------------------
TKB---- 79-- 350-- Truck--- 165-- LS-9-------- 4-Brl-------------------

Casting Number-- CID-- Years----- HP----- Comments
3970010------ 302/350- 69-79- 145-370- car & Truck 2 & 4-Bolt Most common
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