[jaybaum96]

Not really thinking about doing it but it may be a possibility. My autos teacher has a 3100 out of a 98 Monte he is willing to give me for free because he's sick of having it sit around. It has 75k on it and it only needs a few sensors (which my 3100 has). Most performance parts for the 3100 are about the same or less in cost than parts for a l67. For example, i can do a tuned pcm, cam, springs, rockers, ported heads and intake manifolds all for the price of a Stock L67 Swap. What is the power potential someone has seen out of a 3100/3400 (without turboing it)? I dont know all that much about these engines so fill me in, as much of my time is spent looking at 3800s .

This post has been edited by jaybaum96: 16 April 2010 - 09:52 AM

[mrclean]

dude dont do it.

3800 or bust

[cak387]

After that is all said and done, you would be at the equivalent of a stock l67 more than likely. Then when you get upset because you are still at the same power as a l67, you will be SOL because you have done all their is except for boost. Then you would have just been better off with the l67. Honestly, their is no point in modding the 3100 unless you just want a little more performance out of it. If you ever want to do anything else down the line, the l67 is the better platform.

[Manitcor]

if your dead set on the 3100 you either go blown or go home, it would take ALOT to make a 3100 a decent NA monster.

[me6894]

Quote

For example, i can do a tuned pcm, cam, springs, rockers, ported heads and intake manifolds all for the price of a Stock L67 Swap

But in the end you're still alot slower than a stock L67 and spent way too much money on a motor that's maxed without spending $3k on a turbo.

[zipper778]

If you do the 3100 build go turbo. Don't waste your time with an NA build. The highest whp I've seen come out of a 3100 was 188whp or something like that. I wanted to do a nice NA 3800 build but look what happened. I was tired of just being a tiny little bit better than a stock L67.

With our v6 engines, go boost.

[jaybaum96]

haha dumb topic by me. MODS: please delete. I dont know what i was thinking, l67 is what im going with.

[BrOnXxBoMbAz213]

LOL the most powerful N/A 3100 build was 180whp i think and that was with cam, and ported/polished 3400 intake manifolds.. dont bother... with 75K though maybe swap it in and go turbo, since its much lower mileage it should be more reliable than yours

[me6894]

BrOnXxBoMbAz213, on 17 April 2010 - 02:34 AM, said:

LOL the most powerful N/A 3100 build was 180whp i think and that was with cam, and ported/polished 3400 intake manifolds.. dont bother... with 75K though maybe swap it in and go turbo, since its much lower mileage it should be more reliable than yours

That was regalblue on here and he also had like stage 3 ported heads (like $1500 there alone), and he still wasn't even close to stock l67 power levels. That's probably why he just disappeared lol.

[MiKe0589]

I would have went with a 3500 build, They can make much better power the the 3100.

But then again i am a big fan of 60*'s

Good luck with the swap.

[Manitcor]

MiKe0589, on 17 April 2010 - 12:50 PM, said:

I would have went with a 3500 build, They can make much better power the the 3100.

But then again i am a big fan of 60*'s

Good luck with the swap.

3400 and 3500 are a completely different scenario esp if you like 660s, these engines actually can get some serious power behind them both NA and boosted. Which I am sure you are well aware.

The biggest reason for this is just build quality IMHO. Tolerances are much tighter on late 3400 and 3500 engines along with some design improvements.

[MiKe0589]

Manitcor, on 17 April 2010 - 03:52 PM, said:

MiKe0589, on 17 April 2010 - 12:50 PM, said:

I would have went with a 3500 build, They can make much better power the the 3100.

But then again i am a big fan of 60*'s

Good luck with the swap.

3400 and 3500 are a completely different scenario esp if you like 660s, these engines actually can get some serious power behind them both NA and boosted. Which I am sure you are well aware.

The biggest reason for this is just build quality IMHO. Tolerances are much tighter on late 3400 and 3500 engines along with some design improvements.

Agreed.

[zipper778]

me6894, on 17 April 2010 - 11:14 AM, said:

BrOnXxBoMbAz213, on 17 April 2010 - 02:34 AM, said:

LOL the most powerful N/A 3100 build was 180whp i think and that was with cam, and ported/polished 3400 intake manifolds.. dont bother... with 75K though maybe swap it in and go turbo, since its much lower mileage it should be more reliable than yours

That was regalblue on here and he also had like stage 3 ported heads (like $1500 there alone), and he still wasn't even close to stock l67 power levels. That's probably why he just disappeared lol.

IIRC he spun a bearing but I never heard what he did with the Lumina after that.