TSP/ PRC aftermarket LS3 heads and GT-11 cam installed
02-25-2012, 06:49 PM
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TSP/ PRC aftermarket LS3 heads and GT-11 cam installed I recently had a few upgrades done to my SS and wanted to share the results with you guys. The parts that I had installed were
- LS3 conversion parts with LPE GT-11 cam
- PRC/TSP aftermarket cylinder heads with 68cc combustion chambers for stock compression.
-LSA head gaskets and ARP head stud kit.
-Yank 2800 stall converter with tranny cooler.
-91 Octane tune
- Most mods done in anticipation of a blower next year.
Previous mods to install were the usual bolt ons. It had Kooks 1 7/8" LT headers, Fastlane CAI, V-Max ported TB, GMS plug wires and a tune.
Car baselined very low for mods at 339RWHP and 365RWTQ. It was determined that the previous tune was off and showing knock. Numbers after the mods were 440RWHP and 406RWTQ. I was for sure expecting more especially on the torque side but the 91 octane tune and/or the new converter might have hurt the numbers. I have seen similar to better #'s with a ported stock casting on different cars with that cam but I'm pretty sure they had a 93 octane tune and no converter. The real test of these mods will be at the track this spring.
Car does run very strong with stock like driveability. In fact if not for the converter I think it would have drove no different than stock. Exhaust note did for sure get louder to say the least, LOL. There is a little bit of lope to know that a cam is there from a gear head listener but to the average person I dont think they would know. Now if I go WOT at any speed under 30MPH I get SEVERELY sideways. It also pulls very very hard up top. ALL in all I am very happy. I will try to post a dyno sheet but have been having trouble doing so.
- LS3 conversion parts with LPE GT-11 cam
- PRC/TSP aftermarket cylinder heads with 68cc combustion chambers for stock compression.
-LSA head gaskets and ARP head stud kit.
-Yank 2800 stall converter with tranny cooler.
-91 Octane tune
- Most mods done in anticipation of a blower next year.
Previous mods to install were the usual bolt ons. It had Kooks 1 7/8" LT headers, Fastlane CAI, V-Max ported TB, GMS plug wires and a tune.
Car baselined very low for mods at 339RWHP and 365RWTQ. It was determined that the previous tune was off and showing knock. Numbers after the mods were 440RWHP and 406RWTQ. I was for sure expecting more especially on the torque side but the 91 octane tune and/or the new converter might have hurt the numbers. I have seen similar to better #'s with a ported stock casting on different cars with that cam but I'm pretty sure they had a 93 octane tune and no converter. The real test of these mods will be at the track this spring.
Car does run very strong with stock like driveability. In fact if not for the converter I think it would have drove no different than stock. Exhaust note did for sure get louder to say the least, LOL. There is a little bit of lope to know that a cam is there from a gear head listener but to the average person I dont think they would know. Now if I go WOT at any speed under 30MPH I get SEVERELY sideways. It also pulls very very hard up top. ALL in all I am very happy. I will try to post a dyno sheet but have been having trouble doing so.
02-25-2012, 10:45 PM
#5
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02-28-2012, 04:56 PM
#10
Are you the vader SS L99 on Camaro5.com?
IMHO I'd like to know about the dip in hp and looks like Tq at the end of your pull. Can you post the graph with the rpms like stated above? But also try to include the AFR as well. Like Diet said the cam has a Lil more in it. But just my .02
IMHO I'd like to know about the dip in hp and looks like Tq at the end of your pull. Can you post the graph with the rpms like stated above? But also try to include the AFR as well. Like Diet said the cam has a Lil more in it. But just my .02
02-28-2012, 06:00 PM
#11
Id like to see it in rpm so we can see what rpm it was pulled to.
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Jason
Co-Owner, Texas Speed & Performance, Ltd.
2005 Twin Turbo C6
404cid Stroker, 67mm Twins
994rwhp/902lb ft @ 22 psi (mustang dyno) www.Texas-Speed.com
Jason
Co-Owner, Texas Speed & Performance, Ltd.
2005 Twin Turbo C6
404cid Stroker, 67mm Twins
994rwhp/902lb ft @ 22 psi (mustang dyno) www.Texas-Speed.com
02-28-2012, 07:09 PM
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Are you the vader SS L99 on Camaro5.com?
IMHO I'd like to know about the dip in hp and looks like Tq at the end of your pull. Can you post the graph with the rpms like stated above? But also try to include the AFR as well. Like Diet said the cam has a Lil more in it. But just my .02
IMHO I'd like to know about the dip in hp and looks like Tq at the end of your pull. Can you post the graph with the rpms like stated above? But also try to include the AFR as well. Like Diet said the cam has a Lil more in it. But just my .02
02-28-2012, 07:27 PM
#13
Well I can't calculate accurately but if you have a stock gear 3.27 and he pulled in let's say a 4th gear which is a 1.152 or a 5th gear which is a .852 And you took it to 132? Someone will do the math lol
http://www.wallaceracing.com/Calculators.htm
http://www.wallaceracing.com/Calculators.htm
02-29-2012, 02:15 AM
#17
I think about 8 degrees more duration on the intake side would have given you a good bit more power. With the large lift and relatively low duration your air velocity has got to be pretty high to feed the cylinder. I think this cam would really shine on a l76 or any 4 inch bore motor.
02-29-2012, 05:30 PM
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i think the numbers look good,especially since it looks like that cam is spec'd for a blower application.plus you don't have the most dyno friendly drivetrain either.don't sweat the dyno #s,see what it does at the track!
03-01-2012, 01:06 PM
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Thanks for the positive feedback everyone. Makes me feel a little better about droping the extra coin on the heads.