Does a company make 3100 Performance Cams?

[contraststriker]

Is there a company which sells 3100 Performance Cams? If so, do they boost performance enough to be worth the money?

[phantomFE3]

yes, i dont know the link, but i dont know if it would be worth it to pull out your engine and everything just to put a cam in, if your gonna pull your engine out you should replace alot of things on it, but if you got the materials to take it out and lots of extra time on your hands i say go for it

[mfewtrail]

yes, i dont know the link, but i dont know if it would be worth it to pull out your engine and everything just to put a cam in, if your gonna pull your engine out you should replace alot of things on it, but if you got the materials to take it out and lots of extra time on your hands i say go for it

 

I don't believe anyone makes a 3100 cam ..YET...I think one of the major companies is working on one though...check out http://www.gmforums.com and do some searches there for more info...you can always get a custom grind and you don't necessarily have to remove your motor to put a cam in....cut a hole in the fenderwell and fill it in w/ body filler or something....hell, put a hinge in the fenderwell where you can open and close the piece you cut 8)

[92turboLE]

i think mantapart has 3100 cams..... they pretty much have any performance part for the 60 degree v6... also i think you can get the GMPreformance parts racing cams for about 150 (i priced those today)

[Heza]

Is there a company which sells 3100 Performance Cams? If so, do they boost performance enough to be worth the money?

 

here's a few things for the 3100....enjoy

 

http://www.streetarsenal.com/

 

...now on my second edit, wrong link...i found a site with cams...i'll try and find it for you again

[dbtk2]

Will a 3100 lower and upper intake manifold fit on a 3.1? I am wondering if I can buy the ported 3100 intake manifold and put it on the TGP? Maybe I can just port the one that is already on there. Does anybody make cams or anything for the 3.1? What is different about the 3.1 and the 3100. I am new to the 191c.i., I am mostly a 231 person. If anyone could help me on this that would be cool.

[Robby1870]

Ignore this I messed up

 

Robby

[Robby1870]

the 3100 intakes will bolt on to your TGP motor, however, you are going to have to relocate some sensors. Your best bet is to port and polish your exising heads and intakes.

 

Now there are many differences. The blocks are the same, but the compression is 9.6 on a 3100 and 8.9 on an n/a 3.1L and 8.8 on your TGP. THe cam in the 3100 is a roller cam and the one in your TGP is a flat tappet cam. The exhaust ports on the 3100 are D-shaped and the 3.1L has circular ones. THe combustion chambers are bigger and better on the 3100. The 3100 heads flow way better than 3.1L heads. The 3100 is SFI like your L67 (I think L67s are SFI). Anyway, as you prolly know, each injector is fired to coincide with the opening of that intake valve. The 3.1L is multi port and all the injectors are fire 3 at a time, I think, meaning each bank at a time. I think thats it, theres prolly more.

 

Robby

[dbtk2]

I know the blocks are the same. I thought I read that the 3.1's are 189c.i., and the 3100's are 191c.i., is this true?

 

the 3100 intakes will bolt on to your TGP motor, however, you are going to have to relocate some sensors.

 

Like how many sensors, what sensors, and how difficult is it to do? I will probably end up porting the stock intake manifold, but I may consider purchasing this one since the 3100 intake manifolds are supposed to flow a bunch better stock than the 3.1's from what I have read.

 

Now there are many differences. The blocks are the same, but the compression is 9.6 on a 3100 and 8.9 on an n/a 3.1L and 8.8 on your TGP.

 

So are the heads what raised the compression, or did the different pistons and such raise the compression from 8.9-9.6. I knew it was raised, but I don't know what they did to raise it. Since the blocks are the same, I can put 3100 heads on the 3.1 correct? If I can put 3100 heads on the 3.1, and the heads are what changed the compression in the 2, then I can run 9.6:1 compression in the 3.1, then if I run stock boost, or not much more than stock boost, the compression ratio shouldn't be too high, or I can run like 10psi and put in some water injection. I am wanting to make the TGP about 320-350 crank horsepower (260-280 wheel hp), so its going to take some major work, and I am trying to figure out what is needed. I don't know what the fastest TGP is but I am hoping to be up there somewhere.

 

THe cam in the 3100 is a roller cam and the one in your TGP is a flat tappet cam

 

Cams are about the only place I lack knowledge about engines. What is the difference between the two, (roller and flat tappet) and can a 3.1 be converted to a roller cam like the 3100 (assuming correct pushrods, rocker arms, valve springs, etc... are installed), although I don't think I want to convert.

 

The exhaust ports on the 3100 are D-shaped and the 3.1L has circular ones.

 

Are headers available for the Turbo 3.1 or will I need to have them custom made, or should I just port the exhaust manifolds. (I will probably end up porting the stock ones) But if I get 3100 heads I will have to change exhaust manifolds anyways, correct?

 

The 3100 is SFI like your L67 (I think L67s are SFI). Anyway, as you prolly know, each injector is fired to coincide with the opening of that intake valve. The 3.1L is multi port and all the injectors are fire 3 at a time, I think, meaning each bank at a time.

 

Yes L67's are SFI. I knew that 3.1's are MPI and 3100's are SFI but I didn't know exactly what the difference was. MPI is stupid now that I know how it works, no wonder they switched to SFI.

 

I would've had a whole 3100 with 68,000 miles on it to part out for the TGP, because my sister totaled her '96 Beretta, and we could've bought the car back for $400, but we didn't have any place to keep the car so that didn't happen. It had a good trans and everything. Damn...Should've rented a storage place or something for it, oh well. That car ran damn good too, nothing like her '95 Z26 for some reason, and her Z26 runs good, her other Beretta just ran DAMN GOOD. Man, I would've had heads, intake manifold, throttle body, everything, that would've been sweet. Oh well, I'll probably end up buying a fairly low mileage 3100 from a junkyard for like $500 or more. (preferably 75,000 or less)

 

Maybe when I get to the point where I am actually do this stuff, probably this winter, I will make a post and see if you guys can help me out, but it would be nice to have some of my questions answered now.

[Robby1870]

Okay, lets hope I can answer all your questions.

 

1) The displacements are basically the same I think they are off by like 37cc. I honestly dont know which sensors need to be moved, BUT if you swap from the heads up, the 3100 uses the same sensors as a 3.1L so your sensor plugs would work, you could prolly run the 3.1L ECM and wiring, it just wouldnt be SFI (I think thats right)

 

2) The pistons raised the compression, not the heads. So, you could swap over 3100 heads and still have 8.8 compression.

 

3) Cams. A flat tappet cam is cam where the bottom of the lifters are flat, and the lobes are designed for that. A roller cam utilizes rollers on the end of the lifters, and the lobes are designed for that. I guess a 3.1L could be made into a roller cam using 3100 parts

 

4) There are currently NO 3.1L headers that I know of and definitely NONE for a TGP. So, your best bet is to port the stock ones. Because if you went to 3100 manifolds, you would have to custom make a crossover and rear manifold and downpipe. You can use TGP manifolds on the 3100 heads, but I would suggest port matching them to the D shaped 3100 ports.

 

I think that has got it. One of the best mods for your TGP is a Jeff M chip. He is on this site and makes great TGP chips to raise boost from stock 7.5 to 11.5psi (I think those numbers are right) then sets the ECM to work with his 160* stat, and does other things to the chip to make the car run better and most importantly safer. I think with 11.5psi the motor is close to 300HP with exhaust mods and like a cone filter.

 

You mentioned some help. Where do you live?? I bet its nowhere near me, but you never know

 

Robby

[dbtk2]

I think that has got it. One of the best mods for your TGP is a Jeff M chip. He is on this site and makes great TGP chips to raise boost from stock 7.5 to 11.5psi (I think those numbers are right) then sets the ECM to work with his 160* stat, and does other things to the chip to make the car run better and most importantly safer. I think with 11.5psi the motor is close to 300HP with exhaust mods and like a cone filter.

 

I have been planning on getting a Jeff M chip for a long time, but I am trying to get my current underboosting problem fixed first, then I am going to replace the crossover, put in a 160 T-stat, and make a custom CAI maybe even rig up a dual filter CAI, then I am going to get the Chip. I think it only raises boost to 9.5, but if it raises it to 11.5psi that would be awesome. I don't think that with only those mods you are going to gain 95hp though, that seems like a lot. If that is the case though, less porting work for me! I may get a chip custom made after I do my porting and stregthen the internals so I can run more boost (3-5psi or more over whatever the chip raises it to). That should get me up in the horsepower range I want to be in. Maybe eventually I can keep up with the GTP...but that is going to be tough to do, as I am down ~700cc's, and L67's are strong.

 

1) The displacements are basically the same I think they are off by like 37cc. I honestly dont know which sensors need to be moved, BUT if you swap from the heads up, the 3100 uses the same sensors as a 3.1L so your sensor plugs would work, you could prolly run the 3.1L ECM and wiring, it just wouldnt be SFI (I think thats right)

 

I am going to look into this more, because I would hate to rely on one person and have the info be wrong (I am not saying you are giving me incorrect information, I just don't want to be messing things up), but if that is the case...SWEET! I seriously hope I can run the same ECM because I don't want to mess with wiring harness crap, and I am fine with TPI, although SFI would be nicer.

 

2) The pistons raised the compression, not the heads. So, you could swap over 3100 heads and still have 8.8 compression.

 

Cool...I was hoping that was the case, I didn't really want to run the higher compression, but I have no problem with it if I have to. Because this is the case, I should be able to safely run more boost.

 

3) Cams. A flat tappet cam is cam where the bottom of the lifters are flat, and the lobes are designed for that. A roller cam utilizes rollers on the end of the lifters, and the lobes are designed for that. I guess a 3.1L could be made into a roller cam using 3100 parts

 

I am considering changing to 3100 cam and stuff just so I can have roller lifters and such for less friction, and the fact that they should be able to handle higher rpms (I am going to want to rev to like 6500 after i beef up the internals), but I would have to get a cam custom ground because they don't have aftermarket turbo cams for the 3100 and the stock 3100 cam wouldn't give me power in the right spots for the turbo, and I want a cam that makes more high-end power where these pushrod engines loose their steam, I want it to kinda feel like a DOHC engine at higher revs, I don't want my power dropping off at 4500 or 5k like most pushrods do.

 

4) There are currently NO 3.1L headers that I know of and definitely NONE for a TGP. So, your best bet is to port the stock ones. Because if you went to 3100 manifolds, you would have to custom make a crossover and rear manifold and downpipe. You can use TGP manifolds on the 3100 heads, but I would suggest port matching them to the D shaped 3100 ports.

 

I didn't figure there were...I guess I am going to port the stock exhaust manifolds, but it is going to have to be some massive porting for how I need it to flow. It looks as though I am going to be doing a lot of work this winter since nobody makes any performance parts for anything on these cars. (You can't blame them for how rare the TGP is)

 

You mentioned some help. Where do you live?? I bet its nowhere near me, but you never know

 

I live in Michigan, like 5 or 10 miles south of Lansing. That isn't too far from your college, but it isn't close either, and this is going to be a big job, definately not a 1 day thing by any means, probably more like a month or more, so that is probably too far to work. I think I am competent enough to do the work by myself but its just going to be a lot of work and its gonna be very time consuming, and I am going to need some of your help on the forum so I don't screw something up, because as you can see I am not familar with the 3.1's or 3100's at all. I will probably do most of the work on weekends and on holiday breaks and such so my car isn't down during school. (I don't wanna ride the bus like a little kid again) I don't know if anybody has ever converted the top end of a 3.1 into the top end of a 3100 so it may be a new job, and I will probably run into a few suprises along the way if this is the case, but thats the fun of modding right. I think I will need stickier tires when I get done though. I wonder what I should call the engine when I get done, maybe LG5/L82, or maybe an LG5-82. Or maybe just "one hell of an LG5," yeah, that works. I think I am gonna get a custom license plate, but I don't know what it should say. Oh well, I have a while to figure it out.

 

Anyways, thanks for the info!

[dbtk2]

I was just looking under the engine section, and for some reason the turbo 3.1 has a larger displacement than the 3.1 and the 3100. It's 3128c.c.'s.

[Robby1870]

Honestly, I dont the cid is that important and have seem many different numbers so, I dont really know what to believe. Your best bet is to figure it out yourself, with your bore and stroke numbers. Its very easy

 

Robby