swap in a olds350. (1968) into a 1987 grandprix with chevy 305 W700 4 speed auto transmission

5

Asked by Jan 06, 2016 at 11:39 AM about the 1987 Pontiac Grand Prix LE

Question type: Car Customization

what do I need to swap out my chevy 305 to a olds 350 c.i.1968 .vintage

4 Answers

74,095

This is a bad idea as you will not be able to pass smog inspection with an old motor.

Best Answer
5

the answer I was searching 4 was probability and procedure. tech answers not opinions, just the mechanics of the swap please. thanks still looking 4 answers.

74,095

With both engines being GM it could be a mostly bolt in change with the right combination of parts but don't count on it. It will cost you far more than just buying a crate engine to bolt in in any case. Remove the old engine and trial fit the even older engine to see how it fits if you are determined to go through with it.

4,175

There are differences between the engines although I believe it will be mostly small stuff. Things like dipstick location, manifolds and accessory mounting and brackets. Also I think the Olds engine is a bit wider. Measure outside to outside width at the valve covers to be sure, then look in the car to make sure there are no clearance issues. It's probably do-able but the small stuff mentioned above may drive you to frustration.

Your Answer

Add photo

Related Questions

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 2,751 nationwide Grand Prix listings starting at $1,200.

ZIP:

Search Pontiac Grand Prix Questions

Pontiac Grand Prix Experts

#1 Js08016
Js08016
Reputation 4,370
#2 Tom Demyan
Tom Demyan
Reputation 2,970
#3 munron
munron
Reputation 2,350
View All

Related Models For Sale

Used Dodge Charger
463 Great Deals out of 27,320 listings starting at $1,650
Used Pontiac Bonneville
524 listings starting at $1,799
Used Chevrolet Monte Carlo
12 Great Deals out of 1,347 listings starting at $995
Used Pontiac Grand Am
1,085 listings starting at $1,599
Used Ford Mustang
740 Great Deals out of 42,668 listings starting at $1,300
Used Chevrolet Camaro
429 Great Deals out of 31,674 listings starting at $2,395
Used Pontiac Firebird
12 Great Deals out of 817 listings starting at $1,900
Used Honda Accord
997 Great Deals out of 62,552 listings starting at $999

Used Cars For Sale

2008 Pontiac Grand Prix For Sale
12 Great Deals out of 378 listings starting at $1,200
2007 Pontiac Grand Prix For Sale
13 Great Deals out of 369 listings starting at $1,350
2006 Pontiac Grand Prix For Sale
10 Great Deals out of 461 listings starting at $1,800
2005 Pontiac Grand Prix For Sale
4 Great Deals out of 359 listings starting at $2,350

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.