A Little Down About My Numbers
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A Little Down About My Numbers I know numbers are not everything, but for the longest time I felt my numbers were rather weak for an LT1 with everything I have done.
I have a 1997 Camaro A4 with the following mods:
-75,450 miles
-UMI STB
-UMI PHB
-UMI LCA's
-UMI LCA brackets
-UMI DS safety loop
-Racetronix 255 LPH kit
-lingenfelter full CAI
-TB bypass
-10 bolt
-UD pulley
-3in ORY (no mufflers or cats)
-Pacesetter LT's
-Dynosport tune
-Sam Strano springs
-Bilstein SLP shocks
-275/40/17 nitto NT05R's
-373 gears
-TA cover
-full richmond kit for the 10 bolt
Current dyno without a new upgraded tune and no account for my full CAI is 270RWHP and 290RWHP. I feel this is a good bit low for an automatic, hopefully I can get 280RWHP with a tune and my CAI. Doing the racetronix kit as we speak.
I have a 1997 Camaro A4 with the following mods:
-75,450 miles
-UMI STB
-UMI PHB
-UMI LCA's
-UMI LCA brackets
-UMI DS safety loop
-Racetronix 255 LPH kit
-lingenfelter full CAI
-TB bypass
-10 bolt
-UD pulley
-3in ORY (no mufflers or cats)
-Pacesetter LT's
-Dynosport tune
-Sam Strano springs
-Bilstein SLP shocks
-275/40/17 nitto NT05R's
-373 gears
-TA cover
-full richmond kit for the 10 bolt
Current dyno without a new upgraded tune and no account for my full CAI is 270RWHP and 290RWHP. I feel this is a good bit low for an automatic, hopefully I can get 280RWHP with a tune and my CAI. Doing the racetronix kit as we speak.
Numbers aren't too far off (no idea what dyno you were on). Tune may not be optimal but regardless, you have an intake, exhaust and a tune. See what it traps at the track before getting down about it.
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Joined: Dec 2010
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From: Maricopa, AZ
I know numbers are not everything, but for the longest time I felt my numbers were rather weak for an LT1 with everything I have done.
I have a 1997 Camaro A4 with the following mods:
-75,450 miles
-UMI STB
-UMI PHB
-UMI LCA's
-UMI LCA brackets
-UMI DS safety loop
-Racetronix 255 LPH kit
-lingenfelter full CAI
-TB bypass
-10 bolt
-UD pulley
-3in ORY (no mufflers or cats)
-Pacesetter LT's
-Dynosport tune
-Sam Strano springs
-Bilstein SLP shocks
-275/40/17 nitto NT05R's
-373 gears
-TA cover
-full richmond kit for the 10 bolt
Current dyno without a new upgraded tune and no account for my full CAI is 270RWHP and 290RWHP. I feel this is a good bit low for an automatic, hopefully I can get 280RWHP with a tune and my CAI. Doing the racetronix kit as we speak.
I have a 1997 Camaro A4 with the following mods:
-75,450 miles
-UMI STB
-UMI PHB
-UMI LCA's
-UMI LCA brackets
-UMI DS safety loop
-Racetronix 255 LPH kit
-lingenfelter full CAI
-TB bypass
-10 bolt
-UD pulley
-3in ORY (no mufflers or cats)
-Pacesetter LT's
-Dynosport tune
-Sam Strano springs
-Bilstein SLP shocks
-275/40/17 nitto NT05R's
-373 gears
-TA cover
-full richmond kit for the 10 bolt
Current dyno without a new upgraded tune and no account for my full CAI is 270RWHP and 290RWHP. I feel this is a good bit low for an automatic, hopefully I can get 280RWHP with a tune and my CAI. Doing the racetronix kit as we speak.
The real numbers you should care about are trap speed, et, and weight. Or lap times if you prefer road courses or autox.
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From: Maricopa, AZ
Heads mostly. I rarely, of ever see or hear about a 350 LT1 pushing more than 340rwhp cam only. Of course no body ever does just heads. But the power difference is huge from cam only to heads and cam. Cam only is about the same cost as a good set of ported heads once you factor in valve springs, rockers, and push rods.
Last edited by hrcslam; Apr 21, 2015 at 03:41 AM.
Thread Starter
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From: Lincoln, Nebraska
For some comparison my stock numbers were: 245/270, now they were 270/295 before full intake. My original intake was very restrictive and the new CAI is lots bigger and smoother etc; should help out a bit. I gained 25rwhp and 25rwtq across the board with just long tubes with a y-pipe with a dump before the axel.
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Opti, ngk iridium plugs, MSD super conductor wires, new water pump, coil and coil wire.
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Auto LT1s stock only make 240-245 RWHP....you gained 30 RWHP with a few bolts ons, sounds about right to me....you have not even done "FULL bolt ons" yet either....still need an electric WP and 1.6 RR. Not to mention little stuff like throttle body airfoil ($25), high flow bellow with silencer delete ($70), coolant bypass for the TB (dirt cheap), 160 stat, ect. ect....) Every little bit helps. 
The fuel pump wont give any increase in HP, the motor is going to use what it needs. You have an untuned A4 with only long tubes, your numbers are spot on for where they should be. With the tune and CAI, youll be 280, maybe 290, which is where an A4 intake/exhaust car should be.
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Heads mostly. I rarely, of ever see or hear about a 350 LT1 pushing more than 340rwhp cam only. Of course no body ever does just heads. But the power difference is huge from cam only to heads and cam. Cam only is about the same cost as a good set of ported heads once you factor in valve springs, rockers, and push rods.
It's rather easy to make 350+rwhp with stock heads if you pick the right cam, the tune is good and the supporting mods are there.
I've seen multiple A4 cars over 340rwhp "cam-only" as well.
Mine is a M6 car so the numbers will be a bit higher than A4 numbers, but I made 290rwhp/327rwtq with CAI, MAC mid-length headers, O/R pipe, full catback and stock programming.
Next I added cam/springs/rockers and a tune and made 352rwhp/364rwtq. Same dyno. That's a net gain of 62rwhp and 33rwtq. I'd like to see someone post up gains like that by just swapping heads and sticking with the stock cam.
FWIW, later I went with a slightly bigger cam, AI200cc heads and Hooker longtubes I made the numbers in my sig, but that was on a different dyno.
So basically in my experience, doing just a cam will get you about 50% of the power gains and a large majority of the torque gains that doing both heads and a cam will get you. Of course, the cam I went with the first time around makes better torque numbers than almost any other cam I've seen in a stock longblock.
OP, your numbers are in the ballpark since the only mods I see that actually increase power are the exhaust and induction stuff. If it were mine, I'd probably do cam/rockers/springs/tune and a quality torque converter and shift kit next. Check the health of your 4L60E transmission too, as one that isn't happy can affect dyno numbers along with everything else.
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Auto LT1s stock only make 240-245 RWHP....you gained 30 RWHP with a few bolts ons, sounds about right to me....you have not even done "FULL bolt ons" yet either....still need an electric WP and 1.6 RR. Not to mention little stuff like throttle body airfoil ($25), high flow bellow with silencer delete ($70), coolant bypass for the TB (dirt cheap), 160 stat, ect. ect....) Every little bit helps.
Just picked up an 1 LE elbow and slp airfoil last night. Looking at an electric water pump and 1.6 rr's. I've already done the TB bypass; was told not to do a 160 degree stat as I already have my tune set to turn on fans around 160ish. Any other bolt ons your recommend?
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The fuel pump wont give any increase in HP, the motor is going to use what it needs. You have an untuned A4 with only long tubes, your numbers are spot on for where they should be. With the tune and CAI, youll be 280, maybe 290, which is where an A4 intake/exhaust car should be.
Thank!
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Where are you looking? I've seen more LT1s over 350rwhp "cam-only" than I care to count, including the one I own.
It's rather easy to make 350+rwhp with stock heads if you pick the right cam, the tune is good and the supporting mods are there.
I've seen multiple A4 cars over 340rwhp "cam-only" as well.
Mine is a M6 car so the numbers will be a bit higher than A4 numbers, but I made 290rwhp/327rwtq with CAI, MAC mid-length headers, O/R pipe, full catback and stock programming.
Next I added cam/springs/rockers and a tune and made 352rwhp/364rwtq. Same dyno. That's a net gain of 62rwhp and 33rwtq. I'd like to see someone post up gains like that by just swapping heads and sticking with the stock cam.
FWIW, later I went with a slightly bigger cam, AI200cc heads and Hooker longtubes I made the numbers in my sig, but that was on a different dyno.
So basically in my experience, doing just a cam will get you about 50% of the power gains and a large majority of the torque gains that doing both heads and a cam will get you. Of course, the cam I went with the first time around makes better torque numbers than almost any other cam I've seen in a stock longblock.
OP, your numbers are in the ballpark since the only mods I see that actually increase power are the exhaust and induction stuff. If it were mine, I'd probably do cam/rockers/springs/tune and a quality torque converter and shift kit next. Check the health of your 4L60E transmission too, as one that isn't happy can affect dyno numbers along with everything else.
It's rather easy to make 350+rwhp with stock heads if you pick the right cam, the tune is good and the supporting mods are there.
I've seen multiple A4 cars over 340rwhp "cam-only" as well.
Mine is a M6 car so the numbers will be a bit higher than A4 numbers, but I made 290rwhp/327rwtq with CAI, MAC mid-length headers, O/R pipe, full catback and stock programming.
Next I added cam/springs/rockers and a tune and made 352rwhp/364rwtq. Same dyno. That's a net gain of 62rwhp and 33rwtq. I'd like to see someone post up gains like that by just swapping heads and sticking with the stock cam.
FWIW, later I went with a slightly bigger cam, AI200cc heads and Hooker longtubes I made the numbers in my sig, but that was on a different dyno.
So basically in my experience, doing just a cam will get you about 50% of the power gains and a large majority of the torque gains that doing both heads and a cam will get you. Of course, the cam I went with the first time around makes better torque numbers than almost any other cam I've seen in a stock longblock.
OP, your numbers are in the ballpark since the only mods I see that actually increase power are the exhaust and induction stuff. If it were mine, I'd probably do cam/rockers/springs/tune and a quality torque converter and shift kit next. Check the health of your 4L60E transmission too, as one that isn't happy can affect dyno numbers along with everything else.
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Thread Starter
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From: Lincoln, Nebraska