The only place I know of that sells engine upgrades for the 3100 is Milzymotorsports.com are there others?

Is it possible to add power to a 3100? Seems like an oxymoron in itself

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2008 Pontiac G8 GT - New Era intake and tune, 35w 5000k HID's, custom exhaust; 334whp/358lb.ft
13.05@107 1.98 60'

http://www.wot-tech.com sells alot of good 60* parts. Best thing you can do is a 3400 top swap, cam, rockers, porting etc.

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-GREEN 1995 Pontiac Grand Prix SE - Rebuilt L82/5-Speed MTX +
-White 1995 Pontiac Grand Prix GTP - 97 207DOHC/6SPD MTX +

Actually a 3500 top swap, cam, headers, and the other usual tricks is about the best thing you can do to a 3100/3400. Those engines respond VERY well to turbocharging as well.

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One Big Ass Mistake America

I refuse to swap out for a 3800 and will never get boost. I am doing a 3500 top swap next year though. Just wasnt sure what else was out there.

Oh yeah forgot about the 3500 top swap... I think the cam will do the most for ya. And dont forget the simple things, exhaust, FWI, better breathing/grounding system etc.

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-GREEN 1995 Pontiac Grand Prix SE - Rebuilt L82/5-Speed MTX +
-White 1995 Pontiac Grand Prix GTP - 97 207DOHC/6SPD MTX +

the bore is to small on a 3100 to use 3500 heads though.

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92 LeBaron Convert: Turbo 3L 97 Grand Prix GT 4dr "Frankenstein": L67 4t65 swap
97 Grand Marquis: Summer DD 99 Grand Prix GTP: Top Swap Beater

Yet, the heads on a 3400 and 3100 are the same. The 3400 bore is 3mm larger than the 3100...that's the difference. IIRC, the 3500 shares the 3400 bore.

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One Big Ass Mistake America

yes but the 3500 cumbustion chamber is bigger and if you put it on a 3100 the bore will be in the chamber.

the best for a 3100 is to get 2000+ heads with a 3500 upper and lower

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92 LeBaron Convert: Turbo 3L 97 Grand Prix GT 4dr "Frankenstein": L67 4t65 swap
97 Grand Marquis: Summer DD 99 Grand Prix GTP: Top Swap Beater

Ah, OK. I didn't know about that bit. I had thought they were at least close enough. In that case, yeah, you'd be correct.

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One Big Ass Mistake America

most peaple don't and then issues happen.

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92 LeBaron Convert: Turbo 3L 97 Grand Prix GT 4dr "Frankenstein": L67 4t65 swap
97 Grand Marquis: Summer DD 99 Grand Prix GTP: Top Swap Beater

I can only imagine. Sorry for bad info to the OP.

I've kicked around the idea of a 3100 with a cam, head work, and a 3500 top end. Preferably with a turbo. If I remember right, one guy makes over 300HP NATURALLY ASPIRATED.

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One Big Ass Mistake America

yes he dose the 3500 is a monster


i am working on a 3400 i am going to be swapping in to my car

i am currently in the "what the hell do i need?" stage. trying to figure out what is diffrent between the SE GP with the 3800 and with the 3100. not getting to mutch useful info except "why the F do you want to do that?"

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92 LeBaron Convert: Turbo 3L 97 Grand Prix GT 4dr "Frankenstein": L67 4t65 swap
97 Grand Marquis: Summer DD 99 Grand Prix GTP: Top Swap Beater

Well, I certainly wouldn't pull the 3800 for a 3100/3400/3500. However, if it was just a 3100, I would find a cheap 3500 to work over.

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One Big Ass Mistake America

I have an 03 so this wouldnt be a problem

Heads, cam, rockers, springs, 3500 top swap, headers, turbo, pcm. All things considered, you could spend less money on an L67 swap with a turbo, pcm, cam, rockers, etc. and make A LOT more horsepower.

There is Milzymotorsports.com for parts and 60degreeV6.com for information.

Keep in mind that 2000+ 3100s have the same top end as the 3400. I think the only difference after 2000 was displacement.

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Kingwood HID | Flowmaster Super 44 duet | Custom trunk

So since i have an 03 this would mean that my upper intake manifold is equal to the 3400 uim?

Yes.

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One Big Ass Mistake America

Right, so the only thing you can do to get more power out of the upper intake is to do a 3500 top swap. Somehow I doubt it would be worth much.

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Kingwood HID | Flowmaster Super 44 duet | Custom trunk

but no heads the 3500 UIM actualy flows less stock but can be ported out more then the 3x00 UIM. the 3500 LIM flows better the a 3x00 though.



and stock 3500 heads flow just as well as fully ported 3800 heads and can not be used on a 3100 just the 3400 and 3500. the 3100 has to small of bore

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92 LeBaron Convert: Turbo 3L 97 Grand Prix GT 4dr "Frankenstein": L67 4t65 swap
97 Grand Marquis: Summer DD 99 Grand Prix GTP: Top Swap Beater

But...3100 and 3400 heads are the same...

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One Big Ass Mistake America

nope the 3400 has ever so slightly larger intake valves. (no gain whe switching over to them)

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92 LeBaron Convert: Turbo 3L 97 Grand Prix GT 4dr "Frankenstein": L67 4t65 swap
97 Grand Marquis: Summer DD 99 Grand Prix GTP: Top Swap Beater

I have decied on a 3500 top swap for 09. From my understanding all i need is a 3500 lim and 3500 heads, I can use my current uim.

if you have a 3100 you can not use the 3500 heads the combustion chamber is bigger then the cylander bore

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92 LeBaron Convert: Turbo 3L 97 Grand Prix GT 4dr "Frankenstein": L67 4t65 swap
97 Grand Marquis: Summer DD 99 Grand Prix GTP: Top Swap Beater

[font=Century Gothic]Not true. I just checked, because I was curious. The part number for the heads (bare) is the same, which I anticipated. But, the standard sized valves from a LG8 3100 V6 and a LA1 3400 are the same GM part number. So, from the factory, they are identical.[/font]

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One Big Ass Mistake America