LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Close to stock LT1 dyno

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Old 11-13-2008 | 02:08 PM
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Originally Posted by metalbeast
because full exhaust (headers& cb), cai & an electric wp are no where near stock. "close" to stock would be a k&n air filter.

agreed subject over.

Old 11-13-2008 | 02:13 PM
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[QUOTE=Counted Out;10475416

And his LT1 (motor) is VERY close to stock.

Nice numbers by the way.[/QUOTE]

Exactly!! Why would you guys even thing full bolt-ons are anything spectacular, i don't consider exhaust & CAI anything outragious by any means, hell the main big gains are in the heads/cam, all we really have that would be considered the biggest gain would be the headers & free'r flowing exhaust, i've got full bolt-ons, sure it runs better, but not near as good if it had a good set of heads/cam, that alone could yeild close to 100 HP is matched right, just my 2 cents.
Old 11-13-2008 | 02:21 PM
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I didn't realize this tread was a poll...well the little graph thingy didn't come up on my computer, so just put me down for "close to stock".

But more seriously those are great numbers!
Old 11-13-2008 | 02:24 PM
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ok if you want to get technical if the heads and cam are the biggest part why dont you go ahead and do a head and cam package on a car without long tubes or even a cat back for that matter.

that will be like trying to blow a jet engine thru a 1-1/2" water line good luck.

but either way stock is how the car came from the factory, if you have done anything else yourself, especially rebuilt the motor, i wouldnt consider that stock. especially with full exhaust and intake. getting a H/C package would just be one step further into the process.

but regaurdless they are good numbers and the op already agree'd.

this biatch.
Old 11-13-2008 | 02:51 PM
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my car is close to stock too
Old 11-13-2008 | 03:14 PM
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Mine too. It still has 8 cylinders, stock head castings and the opti!!!
Old 11-13-2008 | 03:50 PM
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and..."6" Mahle pistons, LE2 heads w/ Patriot duals, LE1 billet cam, LE ported intake, Midwest fabbed 9" w/3.90 gears, AS&M CAI, MADZ28 tune, Borla SS catback w/ E-cutout, LPP Long tube headers w/ cats, Melling select oil pump w/ white spring, CC pro mag 1.6 RR's, MSD 8.5mm OVC wires, SLP clutch plate w/Spec stage 3+ disk, 52MM TB, TB air foil, Strange chromeloy DS, ASP UD pulley, full LS1 brakes"
Old 11-13-2008 | 03:57 PM
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Originally Posted by Chevyguy358
and..."6" Mahle pistons, LE2 heads w/ Patriot duals, LE1 billet cam, LE ported intake, Midwest fabbed 9" w/3.90 gears, AS&M CAI, MADZ28 tune, Borla SS catback w/ E-cutout, LPP Long tube headers w/ cats, Melling select oil pump w/ white spring, CC pro mag 1.6 RR's, MSD 8.5mm OVC wires, SLP clutch plate w/Spec stage 3+ disk, 52MM TB, TB air foil, Strange chromeloy DS, ASP UD pulley, full LS1 brakes"
Ah, those are just insignificant details
Old 11-13-2008 | 03:58 PM
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wait is this a 275hp stock LT1? how is it making 292hp at the WHEELS with only exhaust and a CAI???? or am i wrong??
Old 11-13-2008 | 04:03 PM
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Originally Posted by wrd1972
There aint an LT1 anywhere truly close to stock.
Had I not figured out my motor was redone, I'd dispute that haha. I'm not 100% that I have cat-back, but when I got my car it only had the exhaust and CAI. I did the injectors shortly after, then tune and the rest in my sig. TB isn't installed. I would consider mine closer to stock than the OPs.

Originally Posted by nik1703
wait is this a 275hp stock LT1? how is it making 292hp at the WHEELS with only exhaust and a CAI???? or am i wrong??
only FULL exhaust is the key point. EWP is still good for 5-10hp since ours are cam driven So thats 255~hp stock + 25-30hp for the full exhaust and 5-10hp for the EWP and 8-10hp for CAI. Take the lowest numbers and that oddly enough is 293. Take the highest and it's 305, which is 5 less than the other guy who said his buddy's car with the same mods made.
Old 11-13-2008 | 04:14 PM
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Originally Posted by PNYKLR-TA
hahaha was really just pokin fun at ya man after the first one, but i really like the looks of that stang you got, and i effin hate stangs. those rims look pretty nice on there and i was thinking about going with a simliar color for my white sleek beak TA
No biggie.

Thanks for the Complement on the Stang. Here is a little vid of it in action:
96 Cobra at DH6 and DH7

Originally Posted by EliteCamaro94
mpe331 what color is that camaro in ur sig? kinda looks like my car when the sun isnt hitting it. mine is dark green grey metallic in the sun it looks green at dusk and night time it looks gun metal grey.
It is a stock 03 Ford color DSG (Dark Shadow Grey). It is very close to the factory Pearple Pearl Metallic without the pearl, just straight matallic gunmetal.

Originally Posted by integraxtc
I would agree that those mods, make the car close to stock.
What do we know
Originally Posted by METALBEAST
Because FULL EXHAUST (headers& CB), CAI & an electric WP are NO WHERE NEAR STOCK. "Close" to stock would be a K&N Air Filter.
I guess that depends on what you are used to dealing with. If all you know is fully built bottom end, heads and cam cars with a power adders. A car with a couple mods is VERY close to stock.

It really does not matter. To appease the masses, I will no longer call it close to stock on here.

Originally Posted by PNYKLR-TA
agreed subject over.

Subject IS over, but there is no reason to lock it. I posted a dyno run with mods. Is good for people to voice thier oppinion as long as it does not get out of hand.


Originally Posted by nik1703
wait is this a 275hp stock LT1? how is it making 292hp at the WHEELS with only exhaust and a CAI???? or am i wrong??
Actually a 285HP stock lt1, lol. The factory rating does not matter once som one does full exhaust. The only power producing differences between the 275 and 285 cars is the dual cat exhaust.

I am by no means an expert on the LT1, but I am pretty sure that GM under rated them a little. So with a few minor mods, they can put more than thier advertised crank HP to the tires.
Old 11-13-2008 | 04:19 PM
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Originally Posted by mpe331lx
Actually a 285HP stock lt1, lol. The factory rating does not matter once som one does full exhaust. The only power producing differences between the 275 and 285 cars is the dual cat exhaust.

I am by no means an expert on the LT1, but I am pretty sure that GM under rated them a little. So with a few minor mods, they can put more than thier advertised crank HP to the tires.
Well, that's the only power differences aside from bit better heads, slight cam change, the exhaust and a better computer system (OBD2). To make the extra 10hp, the exhaust won't do that by itself :\ Otherwise I'd get someone's used setup and throw it under my car heh

I've heard many times ours were under rated, but more and more and more of seeing what people make with a stock car (quite literally stock in this meaning), I'm will to say the Corvette was OVER rated. Then again their exhaust is much better than ours, and could easily have a more aggressive tune than the F-Body did. Their cams were a bit better as well, but the differences between F and Y's cams weren't much.
Old 11-13-2008 | 04:25 PM
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Originally Posted by mpe331lx


Actually a 285HP stock lt1, lol. The factory rating does not matter once som one does full exhaust. The only power producing differences between the 275 and 285 cars is the dual cat exhaust.

I am by no means an expert on the LT1, but I am pretty sure that GM under rated them a little. So with a few minor mods, they can put more than thier advertised crank HP to the tires.

Hmm, you know I've actually heard this before - that the LT1 was underrated from the factory. Espeically the 275HP one. What does the board say?
Old 11-13-2008 | 04:31 PM
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Mine is untill next week!LOL! Sweet Numbers!!!!!!!!! Get that thing to the track!!!
Old 11-13-2008 | 04:39 PM
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Wow, what a bunch of crying over nothing.

With headers a CAI and a pump and you're acting like it's now a Top Fuel car.

The car is "close to stock" in my book, but I'm a racer not a show-car waxer...
Old 11-13-2008 | 04:47 PM
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well the way i see it is the motor has not been modified!
headers only free-up HP
elec. wp frees up hp
cai allows the engine to breathe freeing up hp

i will also go on a limb and say ALL f and y body Lt1s are actually 300+ at the flywheel.....

great job especially w/o a tune!
Old 11-13-2008 | 04:56 PM
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Good numbers!

All of my LT1's haven't seemed under rated putting out 230 for my current 1994 (275 rated) and 233 for my 1996 (285 rated). Both cars were autos, so I lost around 17% drivetrain loss which seems about right. There have been alot of 6 speed's that put down alot more (250+) though, which means they would have to have been under rated from the factory. Either way, it is what it is.
Old 11-13-2008 | 04:59 PM
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Originally Posted by ScreaminRedZ
Good numbers!

All of my LT1's haven't seemed under rated putting out 230 for my current 1994 (275 rated) and 233 for my 1996 (285 rated). Both cars were autos, so I lost around 17% drivetrain loss which seems about right. There have been alot of 6 speed's that put down alot more (250+) though, which means they would have to have been under rated from the factory. Either way, it is what it is.
those are some sad numbers..

how is it possible that the OP can have over 290whp with just exhaust.. and you have 230???

something doesn't add up.
Old 11-13-2008 | 06:05 PM
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Originally Posted by 96lt1m6
i will also go on a limb and say ALL f and y body Lt1s are actually 300+ at the flywheel.....
300 flywheel, with A4s getting 230-240 means a 23-20% drive train loss. Just thought that seemed a bit high for the A4s which I thought was more around 15% like Screamin's numbers.


Originally Posted by nik1703
those are some sad numbers..

how is it possible that the OP can have over 290whp with just exhaust.. and you have 230???

something doesn't add up.
Those are PROBABLY his stock numbers. All adds up on my end!
Old 11-13-2008 | 06:08 PM
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Originally Posted by Formula350

Those are PROBABLY his stock numbers. All adds up on my end!
what im saying is... op had 292whp on the dyno with just full exhaust.

other guy says he had 230whp on the dyno stock.


62hp difference with just a full exhaust?? something is wrong.


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