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  #1 (permalink)  
Old 11-26-2011, 11:25 PM
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newbi

Hi all: Just a short note to introduce... I've got a '29 Ford Tudor sedan. 1979 Buick V6 3.8L, turbo 350 auto. The body is totally stock-looking with a modern torsion bar suspension. I have almost 59K miles on the motor and am looking to a newer 3.8 BUT using my 4 barrel and intake with the '79 ignition system and MAYBE the newer 4 sp auto.. The point to all this: I, basically, want to do a bolt-out/bolt-in replacement. Any ideas out there? Will it work? Thanks for your time, Wayne.

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Old 11-27-2011, 10:07 AM
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Along about '87 the traditional BOP transmission bolt pattern was axed, so you'd want to use the later "60" RWD AT w/a '88-up 3800 engine.

As for the early intake fitting a later engine, there is some major differences between the engine you have and a 3800 engine.


FELPRO 1200 INTAKE GASKET W/2.05" x 1.11" PORTS '79-'87


FELPRO 1201 W/2.35" x 1.32" PORTS, '88

This is the stage I stopped at when I was looking into doing something w/a 3800. There may be workarounds I'm unaware of.
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Old 11-27-2011, 01:43 PM
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As Cobalt327 said.. There are MANY changes that have been done to the 3.8 since the eighties.. At least six different head/intake combos. None interchange with each other or the early carbed ones. Also the front wheel/rear wheel belhousings..

Funny thing is. After they messed around with this engine since the mid sixties.. They finally got it right... Discontinued production!!!
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Old 11-28-2011, 11:34 PM
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Different 3.8 L motors

Holy Cow: I definitely did not know about the different trans, etc., thanks, Wayne. So.., a '79 to '88 block is what I need to be a bolt/out, bolt/in option?, again thanks, Wayne. Oh, yes, rear wheel drive only? I don't know if there is a FRW these years.?! Wayne.
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Old 11-28-2011, 11:57 PM
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Quote:
Originally Posted by BOBCRMAN@aol.com
Funny thing is. After they messed around with this engine since the mid sixties.. They finally got it right... Discontinued production!!!
Hey, now, just hold on a minute. The 3.8 in my Volvo came out of a '98 Grand Prix GTP. It has 250 HP, 165 RWHP, hydraulic roller lifters, roller rockers, a balance shaft, sequential fuel injection, gets 28 MPG and Oh, Yeah a factory S/C. It runs sweet and starts every time, I love it! So there!!!
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Old 11-29-2011, 04:16 AM
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Quote:
Originally Posted by evolvo
Hey, now, just hold on a minute. The 3.8 in my Volvo came out of a '98 Grand Prix GTP. It has 250 HP, 165 RWHP, hydraulic roller lifters, roller rockers, a balance shaft, sequential fuel injection, gets 28 MPG and Oh, Yeah a factory S/C. It runs sweet and starts every time, I love it! So there!!!
Nice shoe horning there 'Evolvo'.
What Trans did you use behind it?
Any finished Pics?
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Old 01-14-2012, 11:52 AM
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Your easiest swap is:

Find a 2004R trans to replace the th350, very easy swap no driveshaft mods required.

I would only swap to an overdrive trans if you have a rear end ratio that leaves you revving to high on the highway. What gearing and tire diameter are you using? Also what is the weight of the car?

keep the 79 engine just add heads from a 86-87 buick 3.8 engine either turbo or non turbo version is fine.

Then bolt on this intake and you have much more power than the stock 79 had.

http://www.summitracing.com/parts/EDL-5486/
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Old 01-14-2012, 12:30 PM
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Quote:
Originally Posted by SSedan64
Nice shoe horning there 'Evolvo'.
What Trans did you use behind it?
Any finished Pics?
SS,
Must have missed your post somehow. So... I had a 3.8 N/A and T5 out of a '96 Camaro. The blocks are the same N/A to S/C so the flywheel, clutch and bell housing and the T5 bolted right up, just had to install a pilot bearing in the already drilled crank shaft. That's how the FWD S/C went to RWD. Oh yeah, I'm running a Jag IRS, too!
No finished photos' cause it aint. My friend and I have just started spraying SPI epoxy and started applying U-Pol. Hope to have it painted in a couple of months, it's gonna be a fun winter.
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Old 01-18-2012, 10:45 PM
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Quote:
Originally Posted by sean Buick 76
Your easiest swap is:

Find a 2004R trans to replace the th350, very easy swap no driveshaft mods required.

I would only swap to an overdrive trans if you have a rear end ratio that leaves you revving to high on the highway. What gearing and tire diameter are you using? Also what is the weight of the car?

keep the 79 engine just add heads from a 86-87 buick 3.8 engine either turbo or non turbo version is fine.

Then bolt on this intake and you have much more power than the stock 79 had.

http://www.summitracing.com/parts/EDL-5486/
Hi Sean Buick: Thanks for your reply; I'll look to my manifold re this 5486. Where would it be? Please don't tell me it's on the top as I have not looked yet! Lol.. The reason I'm not sure is because I have a weep at the back of my manifold and am not sure if anything here has been machined to see if all is normal. Again, thanks for your patience, Wayne.
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Old 01-18-2012, 10:47 PM
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Hi Sean Buick: why 86/87 heads? Again, thanks, Wayne.
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Old 01-19-2012, 05:42 AM
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Quote:
Originally Posted by wtrueman
Hi Sean Buick: why 86/87 heads? Again, thanks, Wayne.
Just click on the link or search edelbrock buick 3.8 intake on summit....

I am not an expert on the Buick v6 heads however I do know that the 86 and 87 heads are WAY better than the 78 version which was the first year of the even fire version. Somewhere in between the heads got better but I know forsure the 84 and 85 heads are good and I think the 86 and 87 heads are even better.
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Old 01-19-2012, 03:45 PM
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Hi Sean: I'm pretty sure my 3.8 is an odd fire, 1979. Thanks for your time, wayne.
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Old 01-19-2012, 03:50 PM
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Quote:
Originally Posted by wtrueman
Hi Sean: I'm pretty sure my 3.8 is an odd fire, 1979. Thanks for your time, wayne.
Well never heard of that... My 78 Buick 3.8 is an even fire.. I can swap on a 87 top end and have a turbo 78 Skyhawk with efi.
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Old 01-19-2012, 04:25 PM
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Read this first.

http://en.wikipedia.org/wiki/Buick_V6_engine

I would keep your 79 V6 Buick update the cam to a more modern grind, find a 200R4 with the BOP housing pattern. This is a fine engine why change it.

Last edited by Two8tyThree; 01-19-2012 at 04:37 PM.
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Old 01-20-2012, 09:37 PM
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3.8 Buick

My son has a '86 3800 Grand National engine he took out of a salvage vehicle and put it long with the transmission in a '33 Buick and it runs great, gets down the road fast enough to scare me and it handles like a dream. I'd suggest you stay with the 3.8 Buick. Good engine!
Normbc9
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