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How much boost can the 3.8 handle?

This is a discussion on How much boost can the 3.8 handle? within the V6 forums, part of the Vehicle Specific category; Stock internals? Going for a turbo setup....

  1. #1
    Rice Killa JwMonE99's Avatar
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    How much boost can the 3.8 handle?

    Stock internals?
    Going for a turbo setup.

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    Member adam3566's Avatar
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    Quote Originally Posted by JwMonE99 View Post
    Stock internals?
    Going for a turbo setup.
    What year 3.8?

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    gm hight tech did a write up on that in 01 I have the mag, i'll go and check but i know the guy had forged pistons. feed it till it blows, build it then feed some more.

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    Member c5z28's Avatar
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    Quote Originally Posted by adam3566 View Post
    What year 3.8?
    96 it's under his avatar

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    Quote Originally Posted by c5z28 View Post
    96 it's under his avatar
    Since when did the 96 Z28 come with a 3.8. News to me.

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    Quote Originally Posted by adam3566 View Post
    Since when did the 96 Z28 come with a 3.8. News to me.
    oh crap good catch. what does year matter anyways other than mileage?

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    it doesnt..........on a stock bottom end people see 15-18 lbs with no problems(i think we have also had people over 20lbs on a stock bottom end). They are stout little motors. Now granted you will need some fueling upgrades, but with a good tune its possible. I have a friend that is local to me that is setting on 13lbs daily and raises it up when needed.

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    Senior Member 5.0THIS's Avatar
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    Teufel Hunden has run upwards of 15psi for awhile now with a custom turbo setup, and on a motor that started boosted life at 90K miles. They hold up pretty well if your fueling is right.

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    Quote Originally Posted by FreakV6 View Post
    it doesnt..........on a stock bottom end people see 15-18 lbs with no problems(i think we have also had people over 20lbs on a stock bottom end). They are stout little motors. Now granted you will need some fueling upgrades, but with a good tune its possible. I have a friend that is local to me that is setting on 13lbs daily and raises it up when needed.
    Pretty sure it does. If it it is a newer 3.8 I would say 8-14 on stock bottom end no problem.

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    Quote Originally Posted by adam3566 View Post
    Pretty sure it does. If it it is a newer 3.8 I would say 8-14 on stock bottom end no problem.
    since we are talking f-bodies here, as long as the 3.8 comes out of a f-body (93-02) its not going to make a bit of diffreance. the only things that differ between the years are intakes, tb's, and exhuast manifolds. Since the manifolds will be replaced for a turbo setup they will not matter, the intakes are either angled or not and will not effect the setup (some even like to used the older angled intakes so that the cold side is easier to hook up. and only diff in the tb's is drive by wire or cable driven. so no, it doesnt matter

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    Quote Originally Posted by FreakV6 View Post
    since we are talking f-bodies here, as long as the 3.8 comes out of a f-body (93-02) its not going to make a bit of diffreance. the only things that differ between the years are intakes, tb's, and exhuast manifolds. Since the manifolds will be replaced for a turbo setup they will not matter, the intakes are either angled or not and will not effect the setup (some even like to used the older angled intakes so that the cold side is easier to hook up. and only diff in the tb's is drive by wire or cable driven. so no, it doesnt matter

    I was talking 3.8's in general, not fbodies. He never said it's coming out of a fbody so I wasn't sure.

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    yea, my bad i was assuming he was talking f-body 3.8's. if your talking other series 2 n/a
    (grand prix, buick, monte carlo,bonneville sse etc) are all the same on the inside as well. if you get a l67/32 s/c (gtps, bonneville ssei's, buick regal gs, etc) block there will be slight diffreances on the internals. they are slightly less compression and can handle boost a little bit better.

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    Not for my car.
    Got someone interested in turbocharging his 95 camaro V6.
    So 8-14psi is safe to say?

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    Not for my car.
    Got someone interested in turbocharging his 95 camaro V6.
    So 8-14psi is safe to say?

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    yea, with some better injectors and fuel pump that is a good place to say.

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    In the new 3800s you can run mid 20s safe, i run 15psi in mine and have for a few years now. Forged internals aren't necessary on the newer cars, hell zzp/intense etc. have build turbo cars running over 30psi on stock internals. Keep the boost cool, good exhaust, good cam and heads and you're golden.

    L67s and L36 3800s are identical except for the deck height, L32s have better rods and better flow stock heads. Several guys run l36 blocks with L67 top parts for more compression

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    I have been pushing 12-14psi on the GTP for about 6 years and 100K miles and have had no problems. I am think of going back to stock this summer.


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