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#1 |
Registered User
![]() Join Date: Sep 2003
Location: DFW
Posts: 765
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how to determine original engine?
I am wondering if there is a way to find out the original engine of a '66 i just picked up?
truck came no motor or trans, was original three on da tree, and has small block motor stands in it, the spid tag is missing and no build sheets present under seat ![]() vin isC1446S136139 i have figured the model number is C1434 is there any equipment to look for that will help determine V8 as opposed to an I6 wish it had a tach dash, could pull it and see if it had V8 or I6 tach...lol now to decide, Big block or LS series motor? Hmmmmm |
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#2 |
Senior Member
![]() Join Date: Oct 2009
Location: Godley, TX
Posts: 17,964
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Re: how to determine original engine?
if the v8 mounts like they could be same vintage as the truck, then odds are it's a 283 truck. I'm sure there are a few more tell-tale things that other members may be able to help with. If I were starting with a truck with no motor - I'd go LS!
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#3 |
Registered User
Join Date: Feb 2007
Location: west coast
Posts: 3,374
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Re: how to determine original engine?
Vin is useless on original engine install. Do you still have the SPID serivce parts indentification decal on inside of glove box? The SPID decal (new for '66) will show options on your truck. If no optional engine shown on decal, it came with a 250 six. If you don't have original dealer invoice(who does?), the paper build sheet under seat (agian, who does?) or thirdly, the metal protecto plate in orignal warranty book ( agian, who does?) it is very hard to prove what originally what truck came with.
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#4 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,626
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Re: how to determine original engine?
If you don't have original dealer invoice(who does?), the paper build sheet under seat (agian, who does?) or thirdly, the metal protecto plate in orignal warranty book ( agian, who does?) it is very hard to prove what originally what truck came with.[/QUOTE]
Some do. I have 2 out of 3. Build sheet (2 of them) and protectoplate. So there!!! LOL!!! |
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#5 |
Registered User
![]() Join Date: Sep 2003
Location: DFW
Posts: 765
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Re: how to determine original engine?
yeah the SPID is gone along with all the other obvious ways to determine easily original equipment.
oh well shes gettin a big block anyways aybe the ls series |
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#6 |
Registered User
![]() Join Date: Sep 2003
Location: DFW
Posts: 765
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Re: how to determine original engine?
found grease pen markings on frame, C1434 V37F they were behind rear bumper and written on the frame upside down (frame probably coming down line for suspension?)
know what the C1434 is but anyone know what the V37F would be? havent been able to find anything that would match and make sense. |
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#7 |
Registered User
![]() Join Date: Sep 2003
Location: DFW
Posts: 765
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Re: how to determine original engine?
Ttt
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#8 |
Registered User
Join Date: Jul 2010
Location: Bancroft, ontario
Posts: 554
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Re: how to determine original engine?
anyone know if the fuel line is the same diameter for 6 or 8?
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#9 |
Registered User
![]() Join Date: Sep 2003
Location: DFW
Posts: 765
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Re: how to determine original engine?
must be nice, I for one have a truck that doesnt have any of them
what about the grease pencil markins in my post above? anyone? |
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#10 |
Registered User
Join Date: Jun 2008
Location: space station delta farce (justin tx)
Posts: 594
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Re: how to determine original engine?
there are 2 different mounting points for the radiators. look at the front cross member that is riveted to the frame there are 4 holes ,only 2 are used there are 2 up higher(v8) and 2 lower(i6), see ware the pads are riveted to the frame. there are 3 engines for 1966 250,283,327(first year in a truck)
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#11 | |
Registered User
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Location: DFW
Posts: 765
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Re: how to determine original engine?
Quote:
Or are we actually talking about cross members and where they tie to the frame? |
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#12 |
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Location: DFW
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Re: how to determine original engine?
ok I understand now! got to the shop and got a look at the ole girl, picture below shows she was original V8 truck, now for the grease pencil markings on the rear crossmember, pics attached
first and second is grease markings on frame any one got a magic decoder ring for that? last is radiator mounts still with factory rivits |
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#13 |
Registered User
Join Date: Jul 2010
Location: Bancroft, ontario
Posts: 554
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Re: how to determine original engine?
does anyone have photos of 6 cylinder rad mounts?
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#14 |
Registered User
Join Date: Jun 2008
Location: space station delta farce (justin tx)
Posts: 594
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Re: how to determine original engine?
they look the same as the v8 only in the lower position as depicted in the picture above
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#15 |
Registered User
Join Date: Jul 2010
Location: Bancroft, ontario
Posts: 554
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Re: how to determine original engine?
just so i understand,the rad mounts determine whether our trucks came with a 6 or 8 cylinder?no need for build sheets,protecta plates etc.
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#16 |
Registered User
Join Date: Jun 2008
Location: space station delta farce (justin tx)
Posts: 594
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Re: how to determine original engine?
did not know that they did that , i have not seen one of them .
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Between saying and doing many a pair of shoes are worn out ![]() Last edited by hotrod66; 03-01-2011 at 10:19 PM. |
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#17 |
Registered User
Join Date: Feb 2007
Location: west coast
Posts: 3,374
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Re: how to determine original engine?
Large radiators were optional on 6 cylinder pickups ( in same location as V8 ), so it is not the determing factor. V 37 is a code for " Custom Chrome Option".Which is chrome front bumper and chrome hubcaps.
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#18 |
Registered User
![]() Join Date: Sep 2003
Location: DFW
Posts: 765
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Re: how to determine original engine?
Factorystock, that could be, the truck does have chrome bumpers front and back, but would they have been writing that on the rear most frame cross member? and upside down too?
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#19 |
Junior Member
Join Date: Dec 2006
Location: Newburgh, IN
Posts: 1,247
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Re: how to determine original engine?
My 66 has a metal plate on the drivers kick panel that gives the h.p. info that could easily be translated to the engine. This plate is in addition the vin on the door.
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1966 Chevy C10 Longbed I'm Bob....ol Curt was my Grandpa The truck was his and he sure as heck wouldn't understand why I took a perfectly good truck and tore it down! ![]() |
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