how to determine original engine?

[Rooster's 67]

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

[jocko]

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!

[factorystock]

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.

[geezer#99]

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!!!

[Rooster's 67]

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

[Rooster's 67]

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.

[Rooster's 67]

Ttt

[oldtrux]

anyone know if the fuel line is the same diameter for 6 or 8?

[Rooster's 67]

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?

[hotrod66]

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)

[Rooster's 67]

Originally Posted by hotrod66

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)

So I Assume you are speaking of the radiator core support? and where the radiator mounts are riveted to the core support.

Or are we actually talking about cross members and where they tie to the frame?

[Rooster's 67]

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

[oldtrux]

does anyone have photos of 6 cylinder rad mounts?

[hotrod66]

Originally Posted by oldtrux

does anyone have photos of 6 cylinder rad mounts?

they look the same as the v8 only in the lower position as depicted in the picture above

[oldtrux]

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.

[hotrod66]

did not know that they did that , i have not seen one of them .

[factorystock]

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.

[Rooster's 67]

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?

[ol Curt]

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.