95 BLKDOUT Drop Top Posted June 26, 2004 Report Posted June 26, 2004 I got a 95 cutty with the 3100 sfi in it, it seems to be laging on the power. I kno these engines werent made to be performers but damn! can i at least be able to smoke the tires a bit. I was looking to da an exhaust and intake sometime soon but i cant find a cold air intake system for the 3100s. Borla makes a cat back system that will fit a '95 3100 Monte Carlo, dont kno if it will fit on the 1st gen w-bodys though. any one got any tips for some quick, cheap horse power? Quote
grandprix104 Posted June 26, 2004 Report Posted June 26, 2004 good luck - there arent many bolt ons for our cars. as for the exaust get a shop to do it. It isnt vey expensive, but be sure to shop around. For the intake you will need to make your own by modifying it or just use a k&n drop-in. There is also a under drive pully (i think) that will help a bit. Quote
95 BLKDOUT Drop Top Posted June 26, 2004 Author Report Posted June 26, 2004 ive had some different ideas on makeing an intake system, 1st i was gonna modify the stock airbox to give it somewhat of a ram air effect then i thought about replacing the airbox with a cone filter of some sort hooked up to the stock air tube, exhaust: first i need to make it into a dual system then i want magnaflow mufflers. I need to flush my engine to get some of the carbon out of it. it has 134,XXX miles on it with no real cleaning so that will probably help Quote
topless94style Posted June 26, 2004 Report Posted June 26, 2004 Extrude hone your intake manifolds, build up some headers, bore out the block, drop in some lower comp pistons, coat everything with friction and thermal barriers, get a stronger low end, get a turbo, scratch the headers and build some turbo manifolds. There, that should cover it. EDIT: Extrude hone, there is a company that you can send your manifolds, and heads out to that will pump this "fluid" through the ports and make them bigger. Just like a P&P, but it works better on the manifolds since there are more bends. It also costs ALOT. For the plenum on my car, i think it would cost about $600. Bore....making your cylinders bigger. Coating everythign will reduce friction and reduce detonation. Its cheap and easy to do, and COULD see gains of 5-10hp. Stronger low end, stronger crank and connecting rods and pistons. Quote
cryptnix Posted July 11, 2004 Report Posted July 11, 2004 To the post above can you explain basically all that shit other then the turbo shit? As you can see I'm searching for an alternative to power (the 3800) but if I can get 210 hp with some mods ... then take it up to 280 or so with a turbo ... it'd be nice ... but whatever ... help me out here please... Quote
Canada Posted July 11, 2004 Report Posted July 11, 2004 You aren't going to get 210 hp with a 3100. Some basic bolt ons... -Fast Forward Performance UDP....made 5 hp on a 3.1 5 speed L body. -Headers...The Other Guys (TOG) and SS Headers both make a set....TOG made 18 whp on a '01 GA GT. -2.25" or 2.5" mandrel bent pipe with a high flow cat and a straight through muffler should gain you around 6-7 whp. -Intake.....don't ghetto this one. Buy a proper CAI. Is also worth about 5 whp. -3400 TB....its 4 mm bigger....52 vs 56....pry only worth 1-2 hp....but you can pick this up uber cheap at a junkyard. Other than that, you are about done for bolt ons. Leave the intake manifolds alone....porting them does make power.....but only about 6-7 hp....not worth it if you go buy the manifolds from either Street Arsenal or RSM Racing. Pocket Porting is a joke. After that (or before) swap in a 3400. I did mine for about $600-$650. I have a 3400 with a Tranzgenic CAI, FFP UDP, and a 2.25" mandrel exhaust with a Xtreme Flow OBD-II cat, and a Dynomax Ultraflo Muffler. I haven't been to the dyno yet......but my *guess* is around 195 flywheel hp. I made 138 whp with the same mods on a 3100.....approx 175 flywheel. Quote
SigEpCutlass Posted July 11, 2004 Report Posted July 11, 2004 I got a 95 cutty with the 3100 sfi in it, it seems to be laging on the power. I kno these engines werent made to be performers but damn! can i at least be able to smoke the tires a bit. I was looking to da an exhaust and intake sometime soon but i cant find a cold air intake system for the 3100s. Borla makes a cat back system that will fit a '95 3100 Monte Carlo, dont kno if it will fit on the 1st gen w-bodys though. any one got any tips for some quick, cheap horse power? your tires don't smoke? I know I can get mine too. Yea you might want to totally fix the inside of your engine first. Fuel System Cleaner might be a start. Before you mod anything you need to get any crap out of your car's engine. Quote
excelsior Posted July 12, 2004 Report Posted July 12, 2004 i got my prix's tires to smoke a couple times.....actually there is a supercharger for the 3100 i found once....it added 80 hp @ the flywheel by manufacturer claim....sooo that takes you to stock l67 level and then do some bolt on's as suggested by some of the other people....dunno if anyone suggested a new cam but im going too....and ya probably want to get a 5 speed....but if speed it be your looking for, and if you want to stay in the w body, you prob. need a l36 swap at the minimum cuz they actually have an aftermarket, or a different car. Unless you want to shell out for the supercharger. Put it this way, even if you do all the mods they suggested, ive got a stock well actually now that i think of it has a couple bolt ons but still an 11 year old 4 door that i recently for all intensive purposes traded my prix for straight up for that would beat your cutlass.... Quote
dsgrntld187 Posted July 12, 2004 Report Posted July 12, 2004 Theres a website on the internet that sells built 3100s that have 250 hp, and then theres another website that sells superchargers for 3100s for 4,900 that adds 80+ hp. The two together would run you about 8,000+ though, although they do install the supercharger for you. Quote
SigEpCutlass Posted July 12, 2004 Report Posted July 12, 2004 Theres a website on the internet that sells built 3100s that have 250 hp, and then theres another website that sells superchargers for 3100s for 4,900 that adds 80+ hp. The two together would run you about 8,000+ though, although they do install the supercharger for you. dude before i put that kinda money in my 3100 i'd do a l67 swap. That'd be cheaper. $8,000 is way too much to put in! Quote
dsgrntld187 Posted July 12, 2004 Report Posted July 12, 2004 Nahh I'd rather have the SC 3100.. It'd be more original and still shock the shit out of everyone. I mean if you beat someone then tell them you did a 3800 SC swap, they would be like oh thats cool, but if you say I have a 3100 SC, they would be like OHHHH, that's cool. 8) Quote
SigEpCutlass Posted July 12, 2004 Report Posted July 12, 2004 Nahh I'd rather have the SC 3100.. It'd be more original and still shock the shit out of everyone. I mean if you beat someone then tell them you did a 3800 SC swap, they would be like oh thats cool, but if you say I have a 3100 SC, they would be like OHHHH, that's cool. 8) common dude...there's more to do to the l67. If you want to put 5 grand into a 3100 to have it S/C be my guest. It's not practical at all! You can get a crate engine l67 and have it installed a hell of a lot cheaper than that. You have over 200hp to start even before you mod. With the money you save you can put it towards other shit like a CAI, dogbones, exhaust, headers...the list goes on... Quote
excelsior Posted July 13, 2004 Report Posted July 13, 2004 sooo end result is for $8000 you have roughly 330 flywheel hp...interesting....but a stock l67 will only give you 240 hp for about $2-3 k i would imagine. If your heart is really set upon the 3100 engine then id go the route that was mentioned before.....probably start w/ the built 3100 and then get the s/c installed later in my case haha. Of course thats a combo that would then leave the SHO in the dust....of course my SHO did something tonight that saddened me.....will go post it now actually lol Quote
BIGBULS Posted July 13, 2004 Report Posted July 13, 2004 Since none of you are actually going to go the forced induction route, and the vast majority are only going to do basic bolt-ons, lets keep things simple. Best mods for hp per $$$$: FFP UDP ~$115 and 5-7whp at high rpm......add in a 3800 alt pulley for an extra hp or so. CAI (custom) ~$100 to do it right and 4-6whp 3400TB (56mm) ~$20-50 from a JY and 1-2whp (probably) Exhaust (custom again) $300-500 to do it right (mandrel bends, good component choice) for 5-8whp Fastchip OBDI reflash (or DHP for OBDII cars) No power gains (for Fastchip anyway), but you DO get better shiftpoints (IF you go the custom flash route), thus increasing performance In the end, it's pretty hard to get a small port 3100 past ~140whp/175 crank hp............netting low 16's in a 3300-3400lb W-Body. Or you would just drop in a 3400 later on.........ALL your mods transfer over. Quote
excelsior Posted July 13, 2004 Report Posted July 13, 2004 ud pulley & throttle body....each net 5-8 flywheel hp...that puts him around 195 flywheel Quote
mfewtrail Posted July 13, 2004 Report Posted July 13, 2004 Nahh I'd rather have the SC 3100.. It'd be more original and still shock the shit out of everyone. I mean if you beat someone then tell them you did a 3800 SC swap, they would be like oh thats cool, but if you say I have a 3100 SC, they would be like OHHHH, that's cool. 8) The "average Joe" doesn't know what the hell an "L67" is...if you popped the hood, they would likely think you supercharged your stock motor. :x ...anyways, check out the pre-97 section at http://www.clubgp.com/forum or the 60degreeV6.com forum, someone there can help you get a reground cam(you choose the specs you want on it) for your 3100 @ a good price. Quote
Canada Posted July 13, 2004 Report Posted July 13, 2004 ud pulley & throttle body....each net 5-8 flywheel hp...that puts him around 195 flywheel You are on crack if you think you made that much off a TB. Quote
digitaloutsider Posted July 13, 2004 Report Posted July 13, 2004 There is NO way you're touching anywhere near 8 WHP with a TB. Unless that TB has some sort of magical supercharging device.. it's not happening. Quote
excelsior Posted July 13, 2004 Report Posted July 13, 2004 ahhh typo + math error = stupidity out of me once again.....shouldve meant total......and then i used the wrong 3400 (n body version) in the calculation.....i think w body version + the mods listed gets him to 200....who knows though Quote
Canada Posted July 13, 2004 Report Posted July 13, 2004 You'll have about 195 hp on a 3400 with intake, UDP, and exhaust (properly built). How do I know? I dynoed my 3100 with intake, UDP, and exhaust (2.25" mandrel pipe with a high flow cat and straight through muffler)....made 138 whp..... 4T60-Es seem to be about 79% efficent...... 138.7 / .79 = 175.5. Thats a 20.5 hp gain over stock (155). All 3400s (wether its from a U, N, or W chasis) seem to make about 175 hp...............195 hp.....maybe a little less beings the 3400 is still on the ECU and things arent quite optimised as they could be. Quote
cryptnix Posted July 13, 2004 Report Posted July 13, 2004 look into ceramic coating your headers, porting and polishing everything ... the more you get that motor to breath and be cooler and shit the more its going to perform face it :x Quote
Canada Posted July 15, 2004 Report Posted July 15, 2004 To bad the only cam out there is for the 2.8/3.1 MPFI (via GMPP or Comp Cams 2030)........makes fuck all for top end, but makes awesome midrange power. Anyone know if that cam will work? I think the profiles changed for the 3100s......the stock 3100 cam *might* actually be "hotter" than the 2030 cam. I don't have the profile of either cam in front me....so I can't say with any truth. Quote
PCGUY112887 Posted December 30, 2005 Report Posted December 30, 2005 In the end, it's pretty hard to get a small port 3100 past ~140whp/175 crank hp............netting low 16's in a 3300-3400lb W-Body. How is your w-body so light? Mine is about 4440lbs. I dynoed my 3100 with intake, UDP, and exhaust (2.25" mandrel pipe with a high flow cat and straight through muffler)....made 138 whp..... The spec sheets shows 150 HP @ 6,000 rpm; 155 ft lb @ 4,400 rpm stock... I thought years ago they changed the measurement from the flywheel to the wheels? Edit - I just realised how old this topic is... sry :!: Quote
dsgrntld187 Posted December 30, 2005 Report Posted December 30, 2005 4400lbs?! whatttt? What kind of W-body is that?!!?!?! 3100 has 160 hp crank 180 ft lbs torque.. 3.1 same torque, 135-140 hp.. Quote
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