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#1 |
Registered User
Join Date: Jan 2013
Location: Toledo,OH
Posts: 10
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I have engine #'s but still can't nail down exact dates. What is this thing!?
Just became a new owner to a 1970 C10. Truck has a non-original 350 in it. The engine # is V0525TBB with casting #3970010. It appears from all my research this could be a 1970 255hp 350 but could also be a late 70's 165hp 350. Clearly there is quite a difference. What other info can I look for to really hammer out a positive id? I thought maybe a compression test? Higher compression motor more then likely the high HP? Need some direction here. Also where on the trans will I find identification numbers? Its a 350 3 speed.
Appreciate everyone's help Adam |
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#2 |
Registered User
Join Date: Nov 2005
Location: Paducah, Ky
Posts: 393
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Re: I have engine #'s but still can't nail down exact dates. What is this thing!?
There will be a casting date on the bellhousing flange, usually behind the passenger side head. It should nail it down for you.
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#3 |
Registered User
Join Date: Oct 2009
Location: Tampa Bay
Posts: 1,549
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Re: I have engine #'s but still can't nail down exact dates. What is this thing!?
Get the date code off the block,
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CHEVY/GMC VIN DECODERS |
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#4 | |
Registered User
Join Date: Jan 2013
Location: Toledo,OH
Posts: 10
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Re: I have engine #'s but still can't nail down exact dates. What is this thing!?
Quote:
Exactly what I was looking for. The numbers I need would be at the rear of the engine! Thanks |
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#5 |
Registered User
Join Date: Jan 2010
Location: Hollidaysburg, PA
Posts: 785
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Re: I have engine #'s but still can't nail down exact dates. What is this thing!?
was there a vin number with the engine code on the front of the motor......on a personal note that motor was put together on my birthday.
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_________________________________ 62 Impala 70 C-10 LWB 71 K-10 SWB 85 C-10 LWB==SOLD 01 2500 HD Members Met......2003Silverado (Dave) |
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#6 |
Registered User
Join Date: Jan 2013
Location: Toledo,OH
Posts: 10
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Re: I have engine #'s but still can't nail down exact dates. What is this thing!?
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#7 |
Cluster King
![]() Join Date: Nov 2012
Location: Junction City, OR
Posts: 5,263
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Re: I have engine #'s but still can't nail down exact dates. What is this thing!?
The casting number won't tell you a whole lot. 3970010 is the most common small block casting number there is. It could be a 327 with that number or like mine is a 1978 350.
The number that tells you what the engine actually was built for is the numbers stamped on the passenger deck on the front side. I am also looking for this information for my engine. The date code will be on the back of the block near the casting number like shown in the photo above but all that will tell you is the day/month/year the block was cast. Just an extra note, a compression test won't help you determine compression ratio but it will tell you if the rings and valves are seating well. |
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#8 |
Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: I have engine #'s but still can't nail down exact dates. What is this thing!?
actually there is little to no difference bewtween a 1970 255hp and a late 70's 165hp other than slight head changes// and who's ta say that anything has not been changed in 40years
does it run? how good? those two questions are about all that matters if it dont run just decide// build it or crat it
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71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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#9 | |
Registered User
Join Date: Jan 2013
Location: Toledo,OH
Posts: 10
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Re: I have engine #'s but still can't nail down exact dates. What is this thing!?
Quote:
Truck runs fine but i enjoy knowing the details/history of my trucks. If the only difference are the heads they obviously flow quite a bit more to produce that much more horsepower. Posted via Mobile Device |
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#10 |
Registered User
![]() Join Date: Nov 2006
Location: Virginia's Eastern Shore
Posts: 91
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Re: I have engine #'s but still can't nail down exact dates. What is this thing!?
Seems they would have spec'd a different cam as well.
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