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Old September 29th, 2008, 03:20 PM   #1
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Chevy 350 in a 78 Delta 88?

Are the parts (mounts primarily, I guess) easily sourced to install a chevy 350/ t-350 in a 78 Delta? I am looking at a 778 2 door that has a blown 260 in it now. I have a nice four bolt chevy that would be inexpensive for me to install.



This 1978 88 two door has a solid body with an interior that won't cost a ton to clean up but mechanically it's pretty much junk. I built a 78 4 door for my son and when I saw this two door resting behind an auto repair shop the wheels started to turn in my head...



I know GM put chebbies in these cars when they were new (I grew up near Lansing, MI... Oldsmobile town supreme in the 70's!) and I remember the stink about it then. Still seems like it oughta be a bolt in deal if the mounts weren't some odd ball thing...




Thanks!
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Old September 29th, 2008, 03:37 PM   #2
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Well for a guy that lived in Lansing in the 70's I find this a bit hard to believe, putting a Chevy in an Olds? Been to Lansing for Homecomming every year since 2003, and help put on the Alero show the Friday before the show.

Anyway, a SBC in an Olds can be done, but it's a lot easier if the car already has a SBC in it. The starter on the other side, motor mounts are different, Tranny bolt patterns are different. BOP motors are 4 bolts, Chevys are 5.

Nothing from an Olds motor will work on a Chevy, except for the Carb and the disturbor cap and maybe a few other small things
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Old September 29th, 2008, 11:03 PM   #3
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You'll have to go to the junkyard and get the frame pads from a 77-90 caprice or Impala. I have a running olds 307 if you want it, but I'm Just outside of Chicago.
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Old September 30th, 2008, 04:32 AM   #4
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Oh man! I wouldn't use that Chevy motor if I were you. Since it is only a 4 bolt main it will probably tank the first time you rev it higher than 1500 rpm. That is why Chevy had to use the 8 bolt main. The metal they used in their engines was CHEAP!
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Old September 30th, 2008, 07:00 AM   #5
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While the parts are available (since Olds installed Chevy motors in these cars from the factory) keep in mind that EVERYTHING under the hood is different - motor mounts, frame mounts, accessory brackets, exhaust manifolds, pipes, trans bellhousing, etc. A much easier path would be to just get a 350 Olds, which is a bolt-in. You'll also get less ridicule from this forum.
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Old September 30th, 2008, 09:17 AM   #6
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Although I don't want to see a chevy in it.....

I want it saved. Get some kind of motor in it.
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Old October 1st, 2008, 03:56 PM   #7
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I thought that question might get a rise here..

I guess I never researched things enough to realize all of the differences. I knew the bell housing pattern and mounts would be an issue but I didn't realize all of the other differences.

I think I may have found a deal on a 77 olds 350 on C/L. That would certainly be easier...

My son and I get a kick out of RWD 88's. Here's a picture of his '78 and the next project for us, a 50 Buick.

Getting his 88 back on the road has started to give me the bug to do another...

Thanks!
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Old October 2nd, 2008, 05:06 AM   #8
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That Buick is really cool! One of if not THE best Olds we ever owned was a '78 Delta 88. My wife loved it.
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Old October 4th, 2008, 02:21 PM   #9
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The 350 engines with a 4 barrel were Oldsmobile engines and the 2 barrels were Chevrolet engines. Look for an R in the VIN. That's the Olds engine.
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Old October 4th, 2008, 02:21 PM
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