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Jan 30, 2007 | 01:57 PM

eblate

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Cruising

Joined: Jan 2007

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From: Modesto ca

Information Request

Under much protest from the wife i brought home a project the other day. Can any of you tell me how to id a big block car with no original motor or build sheet it is a 68 convertable

Jan 30, 2007 | 02:29 PM

Duke94

Le Mans Master

Joined: Mar 2001

Posts: 6,640

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From: Ann Arbor Michigan

Quote:

Originally Posted by eblate

Under much protest from the wife i brought home a project the other day. Can any of you tell me how to id a big block car with no original motor or build sheet it is a 68 convertable

There is nothing in the VIN to tell engine. Did the engine come with the car? If so, it should have the last 6 digits of the VIN stamped on it. There may be differences in the frame or some other component unique to a big block car. I'm no BB expert, but I'm sure someone else will chime in. Looks like a fun project, good luck.

Jan 30, 2007 | 04:38 PM

eblate

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Cruising

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From: Modesto ca

came with a small block 400 that is not from this car has an AO 3.70 rear end and a m-21 trans thanks for the reply

Last edited by eblate; Jan 30, 2007 at 10:44 PM.

Jan 30, 2007 | 10:46 PM

eblate

Thread Starter

Cruising

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From: Modesto ca

Also has small rust spot on fram should be ok to grind it out and fill it in?

Jan 31, 2007 | 07:11 AM

sweethence

Le Mans Master

Joined: Jan 2006

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From: Wilmington DE, Drive it like you stole it, 68 327 4 speed coupe

Quote:

Originally Posted by eblate

Under much protest from the wife i brought home a project the other day. Can any of you tell me how to id a big block car with no original motor or build sheet it is a 68 convertable

there are several big block check points

larger springs - check front ride height
larger half shafts
u-joints on diff use caps instead of straps
Tachometer redline is higher

ummmm there are a few others

Jan 31, 2007 | 10:09 AM

Easy Mike

Team Owner

Joined: Jun 2000

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From: Southbound

Cruise-In II Veteran

Quote:

Originally Posted by eblate

...Can any of you tell me how to id a big block car with no original motor or build sheet it is a 68 convertable

You can't without some sort of original documentation with the car. Any and all of the usual big block tip offs could have been purchased over the counter from any Chevy parts dealer or removed from a donor car and installed on your '68.

If the tranny is original, it's stamped with a VIN derivative and should match your VIN.

If the documentation trail is cold, why worry about the original engine? Build the car the way you want it, cruise, and enjoy.