Low Dyno #s after H/C/I swap... What do you think ?
11-30-2009, 09:03 PM
#1
Staging Lane
Thread Starter
iTrader: (8)
Join Date: Jun 2008
Location: (So Cal) California
Posts: 87
Likes: 0
Received 0 Likes
on
0 Posts
Low Dyno #s after H/C/I swap... What do you think ? I have a 99 SS M6. With a complete stock 04 LS6 engine with bolt ons(1 7/8 LT, ORY, 3in catback, UD pulley, stock ported TB, lid and k&n filter, CAI kit, slp maf, 160 t-stat and a dyno tune) i put down 396hp/393tq
Now i have PRC 2.5 LS6 heads and Torquer 3 cam from TSP. I also installed a Fast 92 intake, 92 tb and 36lb injectors. I upgraded all the internals necessary for a cam swap...i.e. lifters, timing chain, ported oil pump....
I got my car re-tuned and i put down 436hp/396tq
Are those low numbers or are those numbers about right ? any input will be helpful
Now i have PRC 2.5 LS6 heads and Torquer 3 cam from TSP. I also installed a Fast 92 intake, 92 tb and 36lb injectors. I upgraded all the internals necessary for a cam swap...i.e. lifters, timing chain, ported oil pump....
I got my car re-tuned and i put down 436hp/396tq
Are those low numbers or are those numbers about right ? any input will be helpful
Last edited by F.Rojas; 05-12-2010 at 10:52 PM.
11-30-2009, 09:19 PM
#5
TECH Enthusiast
iTrader: (1)
Join Date: Dec 2005
Location: Denver International Airport, Colorado USA
Posts: 549
Likes: 0
Received 0 Likes
on
0 Posts
I would think with your intake mods, you would be closer to 450/410.
Normally with a LS6 intake..430-435Hp is pretty good..but you have a lot of mods.
As always, seeing the actual dyno graph and SAE figures would help. And it never hurts to try another dyno. Whats was your AFR during that dyno run?
..WeathermanShawn..
Normally with a LS6 intake..430-435Hp is pretty good..but you have a lot of mods.
As always, seeing the actual dyno graph and SAE figures would help. And it never hurts to try another dyno. Whats was your AFR during that dyno run?
..WeathermanShawn..
Trending Topics
11-30-2009, 09:41 PM
#8
What was the injector duty cycle? Stock fuel pump? Not bad numbers really, go to the track, thats the real power tested, not a big wheel that spins under your tires. Dynos are used for tuning and are helpful, another dyno across down may be 30hp lower, or higher.
If you can post before/after with both setups.
On my last cam setp vs my old on I went from 373 hp to 403, BUT!!!! at 6,500 rpm the ho difference was 60hp, even though the car gained 30 peak hp, it picked up .6 and 6mph at the track due to the gains at 6,500, take a look at that on your sheets, you may be surprised.
If you can post before/after with both setups.
On my last cam setp vs my old on I went from 373 hp to 403, BUT!!!! at 6,500 rpm the ho difference was 60hp, even though the car gained 30 peak hp, it picked up .6 and 6mph at the track due to the gains at 6,500, take a look at that on your sheets, you may be surprised.
11-30-2009, 09:49 PM
#9
Staging Lane
Thread Starter
iTrader: (8)
Join Date: Jun 2008
Location: (So Cal) California
Posts: 87
Likes: 0
Received 0 Likes
on
0 Posts
What was the injector duty cycle? Stock fuel pump? Not bad numbers really, go to the track, thats the real power tested, not a big wheel that spins under your tires. Dynos are used for tuning and are helpful, another dyno across down may be 30hp lower, or higher.
If you can post before/after with both setups.
On my last cam setp vs my old on I went from 373 hp to 403, BUT!!!! at 6,500 rpm the ho difference was 60hp, even though the car gained 30 peak hp, it picked up .6 and 6mph at the track due to the gains at 6,500, take a look at that on your sheets, you may be surprised.
If you can post before/after with both setups.
On my last cam setp vs my old on I went from 373 hp to 403, BUT!!!! at 6,500 rpm the ho difference was 60hp, even though the car gained 30 peak hp, it picked up .6 and 6mph at the track due to the gains at 6,500, take a look at that on your sheets, you may be surprised.
Before.... LS6 engine, full bolt ons and a tune i put down 396/393.
Now Stock LS6 bottom end, full bolt ons, H/C/I and tune i put down 436/396
11-30-2009, 10:36 PM
#10
Your LS6 engine was already 40rwhp stronger than a stock LS1 engine so you were starting with a higher baseline. Going from LS6 heads to the PRC heads was probably worth 15-20 more rwhp and going from the LS6 cam to the torquer cam was probably worth 15-20 more and the FAST intake accounted for the rest.
__________________
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.
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.
11-30-2009, 11:06 PM
#11
Staging Lane
Thread Starter
iTrader: (8)
Join Date: Jun 2008
Location: (So Cal) California
Posts: 87
Likes: 0
Received 0 Likes
on
0 Posts
Your LS6 engine was already 40rwhp stronger than a stock LS1 engine so you were starting with a higher baseline. Going from LS6 heads to the PRC heads was probably worth 15-20 more rwhp and going from the LS6 cam to the torquer cam was probably worth 15-20 more and the FAST intake accounted for the rest.
Is it worth it and will i be able to make more hp and tq with a bigger cam or even a custom grind cam ? 
12-01-2009, 10:28 AM
#18
12 Second Club
iTrader: (5)
Join Date: Mar 2007
Location: Shelton, CT
Posts: 79
Likes: 0
Received 0 Likes
on
0 Posts
I just built a forged lq4 wit 241 heads and a torquer 3. It only made 386/376. But my rev limiter is stuck at 6250. Hoping i can get it sorted out so i can make a 7200 pull but id say ur numbers sound about rite.
12-01-2009, 11:07 PM
#19
damn cam only ls6s usually lay down some 430s numbers, not to mention your heads now flow up to 315 now...way more than stock and you have an intake thats not holding you back. somethings up....
