iceman1575

Top Swap, Supercharging, etc. on GM 3.8L V6

21 posts in this topic

I've seen a ton of things that would have to be done to a standard GP GT to upgrade the engine for supercharging. Anyone wanna give me a basic idea on what to do if I wanted to add the supercharger from a GTP onto my GT? I've heard so much has to be done, but it's just got me in a confused loop. >_> Thanks

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Lol I actually just got done last week swapping a GTP motor into an SE... Lemme find pics...

edit: Uploading pics now, with the top swap you have to change the heads and the supercharger and get your ECU flashed for the swap, ZZ Perofrmance does a good job they are who did the flash on the swap I did... The alos have extras like the XP cam among other things. With just a top swap you will make more power b/c of higher compression pistons but the non-supercharged motors are nearly as beefy as the supercharged ones... Also the stock non-supercharged transmissions do not like power.... We are running one right now but it only has 50k on it...

Edited by wL<3bass

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Okay its in a 1997 Grand Prix SE, 4dr no wing = total sleeper.

IMG00462-20100525-2044.jpg

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My brother and I did the swap for my dad... He got lucky and scored the complete running GTP motor for $250 and all it had wrong with it was a bad supercharger coupler which was a $30 30minute fix.

http://www.youtube.com/watch?v=web3rw4bjnk

http://www.zzperformance.com/

Edited by wL<3bass

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Did you look at my thread here:

http://www.stevemead...-finished-pics/

Basically to do a top swap you need:

new harmonic balancer for dual belts

lower intake manifold off a l67

fuel rails off an l67

injectors off an l67

throttle body off an l67

heads of an l67

coil pack bracket

supercharger idler pulleys

most important someone who has access to a DHP or some sort of programming device to reprogram your pcm. Without this I would have been fucked. The person who did the swap with me was running a high 11s intercooled beast and is verrrrry good at tuning.

I would also suggest throwing a 3" downpipe and some sort of intake on it.... with the higher compression of the L36 block you are gonna be getting bad KR...

Mine turned out well... I'm put about 2500miles on it since the swap. Only thing I regret is not doing headers at the time... bummer.

www.zzperformance.com - nice having them in michigan i get everything next day

www.clubgp.com

www.grandprixforums.net

Edited by Shyne151

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[media][/media]

mine from 30-80mph... mind you not fully tuned and my stereo in th trunk.

Edited by Shyne151

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Yeah, you can gain quite a bit of flow on new headers and dual or bigger exhaust. Any one can notice how restrictive l36 manifolds are.. especially with 6 cylinders fighting for one pipe lol.

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My buddy Top swapped a GP GT. You had better find a good tuned first because if you don't you WILL burn a hole in a piston. It only took him a week. Now that its tuned and inter-cooled its WICKED fast. Of course this is only the case if you not swapping the entire engine from a GTP. There's a LOT of GP/GTP's in MI so I see like 100 a day lol.

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My buddy Top swapped a GP GT. You had better find a good tuned first because if you don't you WILL burn a hole in a piston. It only took him a week. Now that its tuned and inter-cooled its WICKED fast. Of course this is only the case if you not swapping the entire engine from a GTP. There's a LOT of GP/GTP's in MI so I see like 100 a day lol.

You live in lansing... what do you expect the biggest 3800 performance parts company in the world is like 45min away from you :)

inter-cooler = teh shit. The guy that did my swap with me makes phelonic intercoolers(gotta love engineers)... thats the next step(along with rockers) on my setup along with dropping a couple pulley sizes once we put it on :)

Edited by Shyne151

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I've always been a fan of the 3800 supercharged motors. Especially the newer ones. Local guy around here has a fully built supercharged 3800 in his GTP. Here is a few pics:

l_8ee31252763c4c29a6bedf56817543de.jpg

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l_9056cf987f524c42b2a3b6d9247f2218.jpg

l_2351ccdf6bf341a4926f25ba1d971913.jpg

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I've always been a fan of the 3800 supercharged motors. Especially the newer ones. Local guy around here has a fully built supercharged 3800 in his GTP. Here is a few pics:

l_8ee31252763c4c29a6bedf56817543de.jpg

l_37192c7c74ee48fe90164b1cf586cf76.jpg

l_9056cf987f524c42b2a3b6d9247f2218.jpg

l_2351ccdf6bf341a4926f25ba1d971913.jpg

moar pics of that sex kitten???

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