411 rwhp F-body with stock exhaust manifolds and cats
08-05-2005, 04:05 PM
#21
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i knew it wouldn't be long before you put headers on it,lol.the modding never stops.FWIW,i have a SLP muffler,3" in,2-2 1/2" pipes out.i love the way it sounds with my headers and ORY,it's supposed to be one of the least restrictive mufflers on the market.congrats 
08-05-2005, 04:23 PM
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Originally Posted by Patrick G
SAE numbers. 1.01 correction on the 384 rwhp and 1.00 correction on the 411 rwhp.
As far as keeping the car stock with stock manifolds, I can always go back. But when my car makes 411 rwhp through the SLP dual dual catback and 410 rwhp through the cutout, it leads you to believe that the choke point of the exhaust is further upstream. Cutouts should gain something on a 400 horse motor, LOL.
Headers should alleviate the upstream choke point. Besides, I hate leaving power on the table. Since I'll be running cats and small cam, the car will still have supreme street manners...it will just sound a little more modified. Hey, somebody had to test all this to find out what was possible!
As far as keeping the car stock with stock manifolds, I can always go back. But when my car makes 411 rwhp through the SLP dual dual catback and 410 rwhp through the cutout, it leads you to believe that the choke point of the exhaust is further upstream. Cutouts should gain something on a 400 horse motor, LOL.
Headers should alleviate the upstream choke point. Besides, I hate leaving power on the table. Since I'll be running cats and small cam, the car will still have supreme street manners...it will just sound a little more modified. Hey, somebody had to test all this to find out what was possible!
I know for sure I'm going with this heads/cam combo, I just don't know if I'm adding a full exhaust to it, because I'm not a huge fan of "lope".. 
08-05-2005, 04:29 PM
#23
Great numbers!
I have non equal length 1 7/8" primary long tube headers on my car with non optimized 3" collectors (not merge or even close) and Magnaflow 3" cats bolted up with a Magnaflow X pipe and dual mandrel bent 3" all the way back to 3" Magnaflows. I think the large primaries hurt my torque a little bit....
My cam is much larger than yours but it did make 439rwhp/385rwtq with cats in place thru the exhaust. AFR 205's, LS6 intake/ported TB, TSP 233/239 are my other mods and underdrive pulley.
I wouldn't think aftermarket hi flow cats will eat up much HP at all.
Great numbers once again. The FAST 90/NW90 combo is a pretty penny... but in your case the results speak for themself.
I have non equal length 1 7/8" primary long tube headers on my car with non optimized 3" collectors (not merge or even close) and Magnaflow 3" cats bolted up with a Magnaflow X pipe and dual mandrel bent 3" all the way back to 3" Magnaflows. I think the large primaries hurt my torque a little bit....
My cam is much larger than yours but it did make 439rwhp/385rwtq with cats in place thru the exhaust. AFR 205's, LS6 intake/ported TB, TSP 233/239 are my other mods and underdrive pulley.
I wouldn't think aftermarket hi flow cats will eat up much HP at all.
Great numbers once again. The FAST 90/NW90 combo is a pretty penny... but in your case the results speak for themself.
08-05-2005, 09:01 PM
#24
Update: with the addition of headers, I gained 22 rwhp and 11 rwtq. Nice gains considering the CheaTR cam was designed specifically for stock exhaust manifolds. I can now recommend the cam with confidence to anybody who is also running headers.
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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
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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
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
08-06-2005, 04:40 AM
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Originally Posted by Patrick G
Update: with the addition of headers, I gained 22 rwhp and 11 rwtq. Nice gains considering the CheaTR cam was designed specifically for stock exhaust manifolds. I can now recommend the cam with confidence to anybody who is also running headers.
so what is your current HP and with what current mods?? I also noticed and 85mm MAF was added during the fast intake install?
Dave
08-06-2005, 07:36 AM
#27
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Originally Posted by TT_Vert
so what is your current HP and with what current mods?? I also noticed and 85mm MAF was added during the fast intake install?
Dave
Dave
Originally Posted by Patrick G
Update. My little baby 215@.050" cam made 433 rwhp, 399 rwtq after I added headers and catted y-pipe. The Thunder Racing CheaTR Package with AFR 205 heads is one fine driving combination!
Update. My little baby 215@.050" cam made 433 rwhp, 399 rwtq after I added headers and catted y-pipe. The Thunder Racing CheaTR Package with AFR 205 heads is one fine driving combination!
08-06-2005, 11:01 AM
#29
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Pat your the man with these cars. Bang up job. I would not want to pull up next to you at a red light, that thing is a real sleeper. I would like to see someone do a setup like yours with a 402 LS2 block. Maybe Thunder should design a CheatR cam for a 402. I would like to see someone make 500/500 with a stroker motor and still have a tame cam in it.
to the cheaTR cam
08-06-2005, 12:45 PM
#31
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Originally Posted by PREDATOR-Z
There it is
ok so what mods? i see you gained more HP w/ headers, is this the same car? headers, ported fast 90 w/90mm NW TB, heads, cheater cam, 85mm MAF?
What is total HP?
Dave
08-06-2005, 12:54 PM
#32
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Originally Posted by TT_Vert
ok so what mods? i see you gained more HP w/ headers, is this the same car? headers, ported fast 90 w/90mm NW TB, heads, cheater cam, 85mm MAF?
What is total HP?
Dave
What is total HP?
Dave
AFR 205 heads, Ported FAST 90/NW90, CheaTR cam, longtube headers, catted y, 85mm MAF, lid, 37lb injectors, pulley, stock bottom end..
433rwhp/399rwtq..
08-06-2005, 02:09 PM
#36
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Originally Posted by TT_Vert
i might try throwing some shorties on my combo just to see what they do. I dont feel like getting headers out of the way when i do clutch work
Dave
Dave
If not at least put MAC mids
Or if you have to, I think BBK does a 1 3/4 shorty, or Hooker Shorties 1 5/8 (you'll get some trq)
08-10-2005, 09:59 PM
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Originally Posted by PREDATOR-Z
Are you in Cali?
If not at least put MAC mids
Or if you have to, I think BBK does a 1 3/4 shorty, or Hooker Shorties 1 5/8 (you'll get some trq)
If not at least put MAC mids
Or if you have to, I think BBK does a 1 3/4 shorty, or Hooker Shorties 1 5/8 (you'll get some trq)
Dqve
08-19-2005, 08:10 AM
#39
Originally Posted by TT_Vert
patrick, would you by chance have the dynojet files? Id like to compare them to mine.
Dave
Dave