What do you consider low H/C #'S
06-21-2006, 05:03 PM
#1
But Mine isnt aggressive at all, TR 224 and 241's 
06-21-2006, 10:01 PM
#7
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If u are going through the trouble of replacing the heads I would be think anything lower than 430 would be kind low considering most cam make 400 with just a healthy cam.
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06-21-2006, 10:20 PM
#8
Anything under 400 rwhp with an M6 is low for heads/cam and anything under 380 rwhp with an A4. Some people forget how far we've come in the last several years. I remember when Nineball was one of the first people to break 400 rwhp with heads/cam (back in '99). It took lots of effort. Nowadays, it still does...just the available parts have made it easier. CNC ported heads, thin head gaskets, better headers, FAST intakes, EWPs and good tuning software have made the 450+ rwhp seem common...but let me assure you, it's not that easy. It's all about the combination of parts. Most heads/cam setups are in the 400-420 rwhp range. The really good ones are the ones that make the headlines, but in reality, they're not that common.
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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
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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.
06-21-2006, 10:58 PM
#9
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Originally Posted by Patrick G
Anything under 400 rwhp with an M6 is low for heads/cam and anything under 380 rwhp with an A4. Some people forget how far we've come in the last several years. I remember when Nineball was one of the first people to break 400 rwhp with heads/cam (back in '99). It took lots of effort. Nowadays, it still does...just the available parts have made it easier. CNC ported heads, thin head gaskets, better headers, FAST intakes, EWPs and good tuning software have made the 450+ rwhp seem common...but let me assure you, it's not that easy. It's all about the combination of parts. Most heads/cam setups are in the 400-420 rwhp range. The really good ones are the ones that make the headlines, but in reality, they're not that common.
i agree. not to mention, the cost for that power can be alot to some of us who are working on a tight budget. im still in college, so id be thrilled with anything around 380-400hp.
06-21-2006, 11:34 PM
#10
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Originally Posted by Patrick G
Anything under 400 rwhp with an M6 is low for heads/cam and anything under 380 rwhp with an A4. Some people forget how far we've come in the last several years. I remember when Nineball was one of the first people to break 400 rwhp with heads/cam (back in '99). It took lots of effort. Nowadays, it still does...just the available parts have made it easier. CNC ported heads, thin head gaskets, better headers, FAST intakes, EWPs and good tuning software have made the 450+ rwhp seem common...but let me assure you, it's not that easy. It's all about the combination of parts. Most heads/cam setups are in the 400-420 rwhp range. The really good ones are the ones that make the headlines, but in reality, they're not that common.
06-22-2006, 08:52 AM
#12
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425 M6
400 A4
Considering most mid to big size cam-only bolt-on combos reach 400 M6 380 A4 RWHP, to add a set of aftermarket heads this day in age and not reach the above #'s wud have to mean something is flawed.
400 A4
Considering most mid to big size cam-only bolt-on combos reach 400 M6 380 A4 RWHP, to add a set of aftermarket heads this day in age and not reach the above #'s wud have to mean something is flawed.
Last edited by 01bird58; 06-22-2006 at 09:03 AM.
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06-23-2006, 08:28 AM
#16
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I got about 405 out of my 231/237 and patriot stage 2 heads. It may have been partly the tune or the fact the rear is a moser 9", locker, 35 spline (heavy) axles is taking away a bit more than if I just had my 10 bolt in there. At least that is what I tell myself since I didn't get like 430 out of it. 
06-23-2006, 03:58 PM
#17
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^^ Its safe to say your getting robbed of some horse from the 9". My brother dynod his SS with a 12 bolt and stock 10 and saw a 15 RWHP diff. Granted it was different days and different dynojet dynos
06-24-2006, 01:21 AM
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also depends on a lot of other things other than just A4/M6
type of rear end
gear ratio
size/type of TC for the A4's
Drive shaft
type/size of wheels and tires
i made 390 hp with my A4 with a old sloppy 4k TC on 26/11.5/15 M/T slicks, i know with the stock TC and stock tires i would have made over 400 easy with that set up.
But i think Patrick G has the right idea.
type of rear end
gear ratio
size/type of TC for the A4's
Drive shaft
type/size of wheels and tires
i made 390 hp with my A4 with a old sloppy 4k TC on 26/11.5/15 M/T slicks, i know with the stock TC and stock tires i would have made over 400 easy with that set up.
But i think Patrick G has the right idea.
