vengeance racing built 416! predictions
Originally Posted by MPHmotorsports
Weird. I had a 402 camaro on the dyno and with a SLP "y" pipe it make 502 through a magnaflow exhaust. We opened the cutouts which he had cut the Y pipe and added dual 3" cutouts in the straight part right after the header and picked up right at 20 HP. A impressive gain still.
I don't think you would hurt the rep of a company naming a name. The one I think is garbage is the hooker. It is more of a "T" then a "Y"
Picking up that much power makes me
I don't think you would hurt the rep of a company naming a name. The one I think is garbage is the hooker. It is more of a "T" then a "Y"
Picking up that much power makes me
Originally Posted by camarokid94
do you know what you MAP KPA is at WOT?? by chance.
im at 96ish and wondering if i could gain form a TD setup
im at 96ish and wondering if i could gain form a TD setup
__________________
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
Originally Posted by KAOS
ron do you think these numbes can be duplicated with a 408 and the same setup?
Mike,
FWIW, when we put SlowETz stroker on the dyno he had open headers with 18" Bullits... He came back two weeks later with a complete true dual exhaust with Borlas or something like that and made the EXACT same power across the board and peak....
FWIW, when we put SlowETz stroker on the dyno he had open headers with 18" Bullits... He came back two weeks later with a complete true dual exhaust with Borlas or something like that and made the EXACT same power across the board and peak....
I couldn't believe how restrictive the exhaust was when we took the exhaust off of Mike's car. We couldn't figure out why it was dying after 6k(not staying flat, but falling on it's FACE). Wasn't making the numbers at all and we were all trying to figure out what was going on. Decided to take the catback off and it picked up 11rwhp/11rwtq, and then took the Y-pipe off and it picked up over 40rwhp/40rwtq. And that was still untuned(esp. up top). Can't wait for him to throw some TDs on it and see the real power, but this car is a BEAST on the street already.
On The Tree
Joined: Dec 2006
Posts: 126
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From: Indianapolis, IN
Originally Posted by osuqsz06
alright guys i got some numbers!! found out the hard way you cant really expect maximum power out of a stroker w/ a y pipe!!
496rwhp
452 ft ilbs torque
again thats through cats and a 3 inch y pipe
the crazy thing is we removed and ran open headers (tuned for full exhaust) and picked up 56rwhp and 50 ft ilbs torque!!! and that was without tuning as well!!
so its obvious i need true duals and that 520+rwhp wont be to hard to hit.
i never realized that the y would choke me up that much.
however, the car had 430 torque at 3k rpm and its a blast on the streets
i will get dyno graph up soon as i left it at the shop!!
again, i wanna thank mike and ron at vengeance for building me a killer street setup!! and for offering all the help i needed and then some for this project!!!!!
496rwhp
452 ft ilbs torque
again thats through cats and a 3 inch y pipe
the crazy thing is we removed and ran open headers (tuned for full exhaust) and picked up 56rwhp and 50 ft ilbs torque!!! and that was without tuning as well!!
so its obvious i need true duals and that 520+rwhp wont be to hard to hit.
i never realized that the y would choke me up that much.
however, the car had 430 torque at 3k rpm and its a blast on the streets
i will get dyno graph up soon as i left it at the shop!!
again, i wanna thank mike and ron at vengeance for building me a killer street setup!! and for offering all the help i needed and then some for this project!!!!!
Last edited by cybernco; Jun 5, 2007 at 07:17 PM.
updates!!!
ok, we removed the cats and put 2 flowtech cutouts behind the headers. as well as a dynomax bullet muffler in i pipe for loudness due to cats being removed.
closed numbers= 524rwhp and 482ft ilbs trq.
open numbers= 543 and 491 ft ilbs. trq.
amazing that i gained 50+ rwhp and torque by removing the cats and runnin wide open.
this car is a beast on the streets and is a total blast to drive.
once again, i want to thank ron and mike over at vengeance racing for building me a killer setup and mayhem motorsports for helping me out w/ the instals and tuning!! i will be going to vengeance in the middle of july for a final tune as well.
obtw, these numbers were from mayhem's new dynojet (month old) for all the vengeance non believers we have out their these days.
ok, we removed the cats and put 2 flowtech cutouts behind the headers. as well as a dynomax bullet muffler in i pipe for loudness due to cats being removed.
closed numbers= 524rwhp and 482ft ilbs trq.
open numbers= 543 and 491 ft ilbs. trq.
amazing that i gained 50+ rwhp and torque by removing the cats and runnin wide open.
this car is a beast on the streets and is a total blast to drive.
once again, i want to thank ron and mike over at vengeance racing for building me a killer setup and mayhem motorsports for helping me out w/ the instals and tuning!! i will be going to vengeance in the middle of july for a final tune as well.
obtw, these numbers were from mayhem's new dynojet (month old) for all the vengeance non believers we have out their these days.
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From: On the Bumper!
Man that's great!!! I hear guys all the time complaining about their stroker not making the power they expected and I would bet 90% of the time is because the engine can't breathe. Our dual 3" cut-outs gave us very similiar results.
We run a Kooks 3" y-pipe set up with a factory type dual/dual with a Dynomax Ultra flow muffler. The Kooks Y-pipe has the dual 3" cut outs in it. It's very very quiet for a 408 on the street, but uncap it and it'll rattle the windows.lol.
Remember the AFR capped up vs uncapped will be different so tune accordingly.
Congrats on the new numbers and thanks for sharing the info!!!
We run a Kooks 3" y-pipe set up with a factory type dual/dual with a Dynomax Ultra flow muffler. The Kooks Y-pipe has the dual 3" cut outs in it. It's very very quiet for a 408 on the street, but uncap it and it'll rattle the windows.lol.
Remember the AFR capped up vs uncapped will be different so tune accordingly.
Congrats on the new numbers and thanks for sharing the info!!!
Originally Posted by TXCAMSS
Man that's great!!! I hear guys all the time complaining about their stroker not making the power they expected and I would bet 90% of the time is because the engine can't breathe. Our dual 3" cut-outs gave us very similiar results.
We run a Kooks 3" y-pipe set up with a factory type dual/dual with a Dynomax Ultra flow muffler. The Kooks Y-pipe has the dual 3" cut outs in it. It's very very quiet for a 408 on the street, but uncap it and it'll rattle the windows.lol.
Remember the AFR capped up vs uncapped will be different so tune accordingly.
Congrats on the new numbers and thanks for sharing the info!!!
We run a Kooks 3" y-pipe set up with a factory type dual/dual with a Dynomax Ultra flow muffler. The Kooks Y-pipe has the dual 3" cut outs in it. It's very very quiet for a 408 on the street, but uncap it and it'll rattle the windows.lol.
Remember the AFR capped up vs uncapped will be different so tune accordingly.
Congrats on the new numbers and thanks for sharing the info!!!
Originally Posted by KILLERARMY
Glad to hear the good news on your ride man.Are you still heading to F-Body week in Myrtle Beach,SC next month.
Very nice results, it does seem odd that there's that much power difference in the exhaust. Wonder if the cam could use some more exhaust duration? Or the heads could use a bigger exhaust port? They are kinda small...
Congrats!
Congrats!
Originally Posted by Brian Tooley
Very nice results, it does seem odd that there's that much power difference in the exhaust. Wonder if the cam could use some more exhaust duration? Or the heads could use a bigger exhaust port? They are kinda small...
Congrats!
Congrats!
we could always go bigger 
closed numbers= 524rwhp and 482ft ilbs trq.
open numbers= 543 and 491 ft ilbs. trq.
So wait, these are the tuned numbers? Closed through the Y-Pipe still? The tuned difference isn't 50/50 like it was before. 20rwhp and 10rwtq seems more like it... True Duals would definitely help, though.
open numbers= 543 and 491 ft ilbs. trq.
So wait, these are the tuned numbers? Closed through the Y-Pipe still? The tuned difference isn't 50/50 like it was before. 20rwhp and 10rwtq seems more like it... True Duals would definitely help, though.
Originally Posted by JakeFusion™
closed numbers= 524rwhp and 482ft ilbs trq.
open numbers= 543 and 491 ft ilbs. trq.
So wait, these are the tuned numbers? Closed through the Y-Pipe still? The tuned difference isn't 50/50 like it was before. 20rwhp and 10rwtq seems more like it... True Duals would definitely help, though.
open numbers= 543 and 491 ft ilbs. trq.
So wait, these are the tuned numbers? Closed through the Y-Pipe still? The tuned difference isn't 50/50 like it was before. 20rwhp and 10rwtq seems more like it... True Duals would definitely help, though.