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

Close to stock LT1 dyno

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Old Nov 13, 2008 | 06:21 PM
  #41  
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Originally Posted by nik1703
something is wrong.
Just your reading skills

M6 vs Auto. M6 gets 15-20hp over an A4 car right off the bat. With that said, I'll go back to my previous post, which you clearly also didn't read (which was quoted TO YOU).

"EWP is still good for 5-10hp since ours are cam driven. So thats 255~hp stock + 25-30hp for the full exhaust, 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."

So, with that said, he's 1hp behind my 'rule of thumb' numbers for mods, and not far behind what someone else made with similar mods. Which can easily be factored to different dyno, margin of error, vehicle mileage and if the other car had a tune or not.
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Old Nov 13, 2008 | 06:22 PM
  #42  
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Originally Posted by wrd1972
There aint an LT1 anywhere truly close to stock.
Except for the 95% of them that aren't owned by car guys or gals.
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Old Nov 13, 2008 | 06:24 PM
  #43  
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Originally Posted by grossesexy
Except for the 95% of them that aren't owned by car guys or gals.
Curious as to where you gathered that number of 95%. I would say it would be closer to 30-35% (that's being generous I think)
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Old Nov 13, 2008 | 06:28 PM
  #44  
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Originally Posted by Formula350
Curious as to where you gathered that number of 95%. I would say it would be closer to 30-35% (that's being generous I think)
I was kind of just being a smart aleck honestly. There are plenty of stock LT1 cars around.
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Old Nov 13, 2008 | 06:32 PM
  #45  
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Originally Posted by grossesexy
I was kind of just being a smart aleck honestly. There are plenty of stock LT1 cars around.
Ah And while there are lots of stock ones around, the majority of folks who purchased one, bought it not only for what it is but because of the need for speed. And anyone who has that need, is going to mod it
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Old Nov 13, 2008 | 06:48 PM
  #46  
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Originally Posted by Formula350
Just your reading skills

M6 vs Auto. M6 gets 15-20hp over an A4 car right off the bat. With that said, I'll go back to my previous post, which you clearly also didn't read (which was quoted TO YOU).

"EWP is still good for 5-10hp since ours are cam driven. So thats 255~hp stock + 25-30hp for the full exhaust, 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."

So, with that said, he's 1hp behind my 'rule of thumb' numbers for mods, and not far behind what someone else made with similar mods. Which can easily be factored to different dyno, margin of error, vehicle mileage and if the other car had a tune or not.
Ah i see, i guess that makes sense then. I had no idea M6 vs A4 had that much less drivetrain power loss.
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Old Nov 13, 2008 | 08:47 PM
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Added graph
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Old Nov 13, 2008 | 10:10 PM
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Some of you guys are freakin rediculous... That car is basically stock. ... OOOOOO exhaust and intake....

I guess the title should say... Almost full bolt-on LTjuan minus every bolt on besides exhaust and intake...LOL
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Old Nov 14, 2008 | 01:40 AM
  #49  
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Originally Posted by VENOMIZED03
Some of you guys are freakin rediculous... That car is basically stock. ... OOOOOO exhaust and intake....

I guess the title should say... Almost full bolt-on LTjuan minus every bolt on besides exhaust and intake...LOL
, Back in the day, everyone that had a muscle car would install headers/dual exhaust, better air cleaner, & possibly a carb/intake, they were still considered very mild, if not damn near stock, heck the car still didn't run a whole lot stronger unless it had a cam/gears/compression/heads, that woke them up, so i still think even with bolt-ons, are cars are still fairly stock (but not BONE stock), for what they are, they run VERY well for there weight.
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Old Nov 14, 2008 | 06:32 AM
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Originally Posted by Formula350
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.
I've owned both. There was absolutely no difference in the cams same year F-body LT1 vs Same year Y-body LT1. As far as being over rated...eh...they put down 260-270 RWHP thru an power sapping IRS so I don't see how that is being over rated.
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Old Nov 14, 2008 | 01:36 PM
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Originally Posted by METALBEAST
I've owned both. There was absolutely no difference in the cams same year F-body LT1 vs Same year Y-body LT1. As far as being over rated...eh...they put down 260-270 RWHP thru an power sapping IRS so I don't see how that is being over rated.
You're right, I double checked and the cams were the same. But as for the over-rated, if the motors put out the same power, and the Vette was putting down 270, that's 5 less than the F's flywheel ratings. Then take the M6 F's power to the road of 250-260 and that's 15-25 less than their ratings, which is right on the money for M6 drive train loss. So again, if the IRS is parasitic and the motors put out the same power, you should be into the F's A4 range and not well above the F's M6. Follow me?
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Old Nov 14, 2008 | 03:22 PM
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nik1703, the OP has an M6, so he probably is making about 42 rwhp over stock (250 estimate stock with an M6). That seems pretty much right on for the mods.

That being said, one of my A4 cars made 289 rwhp after getting a full exhaust (shorty headers, hollowed cat, and cutout), CAI, electric water pump, airfoil, 1LE elbow, and under drive pulleys.
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Old Nov 14, 2008 | 03:32 PM
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Originally Posted by ScreaminRedZ
That being said, one of my A4 cars made 289 rwhp after getting a full exhaust (shorty headers, hollowed cat, and cutout), CAI, electric water pump, airfoil, 1LE elbow, and under drive pulleys.
damn thats pretty impressive, especially for Shorty's! and what kinda mileage did that car have?
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Old Nov 14, 2008 | 03:33 PM
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man the disbelief is incredible!
i have the same mods plus 1.6s,true duals and a tune and i hit 315/336.. i am sure someone has to doubt a tune,true duals and 1.6s are worth 22whp
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Old Nov 14, 2008 | 03:38 PM
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PNYKLR-TA, when I bought the car it had 82,000 miles. Probably around 86,000 when it made 289. It was a 1993, which seem to do pretty well power wise.
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Old Nov 14, 2008 | 04:41 PM
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My '95 put down 286rwhp. Only mods were cold air, tune, and 1.6 rockers, and Felpro headgaskets that slightly bumped compression. This was completely factory exhaust cat and all.
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Old Nov 14, 2008 | 06:27 PM
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BTW, while it's not exactly a reputable way of getting numbers... I've entered in exactly correct information into Desktop Dyno 2K3 and got (oddly) exactly the right LT1 numbers of 275/325. So that's just a bit more fuel to my "F's LT1s aren't under rated, but the Vette is over rated".

With that said... Purple with yours punched in w/o a tune & CAI factored in it's showing 282/330. Figure 15-20 for a tune, which negates the drive train loss, leaving you basically right where you said due to the CAI adding 8-10.
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Old Nov 15, 2008 | 04:17 PM
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Originally Posted by Formula350
You're right, I double checked and the cams were the same. But as for the over-rated, if the motors put out the same power, and the Vette was putting down 270, that's 5 less than the F's flywheel ratings. Then take the M6 F's power to the road of 250-260 and that's 15-25 less than their ratings, which is right on the money for M6 drive train loss. So again, if the IRS is parasitic and the motors put out the same power, you should be into the F's A4 range and not well above the F's M6. Follow me?
Your math is a little off. 15-25 RWHP loss (250-260 RWHP) equates to 5-9% drivetrain loss. The T-56 is not THAT good. Now considering that I have saw some bone stock dynos of 270-273 RWHP out of some F-bodies, the only thing you can conclude is that the F-bodies were under rated and are closer to 300-305 FWHP. This is closer to 12-16% parasitic losses which is right on the money for 250-260 RWHP.
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Old Nov 15, 2008 | 07:48 PM
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Originally Posted by mpe331lx
Exactly what it says, close to stock. Is there anything decieving in the title?

How is it NOT close to stock?
It has three minor mods (exhaust, CAI, EWP)
Stock: heads, cam, rockers, intake, throttle body (no air foil), pullies, FPR, PCM/Tune, clutch, flywheel, trans, driveshaft, Rear end and so on.

I am not making the claim to making the most power at all. I am stating that I am happy with what it put down.

I would like to see the graphs on the cars that put down 310. It is very easy for a savy dyno operator/tuner to skew the numbers up or down with adjustments in the correction factor. That is why I make sure that it is set at 1.0 SAE correction factor, not uncorrected or STD corrected (which will show more power).
Thats not close to stock dude.

EDIT: I see everyone has already told you its not close to stock.
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Old Nov 15, 2008 | 09:05 PM
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my car made exactly that much with cai, long tubes, off road y pipe, and a loudmouth...292/321, m6.

always nice to match ls1 performance for around a grand
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