H/C #'s look low
Thread Starter
Staging Lane
Joined: Oct 2004
Posts: 56
Likes: 0
H/C #'s look low Just dyno'd my car and she made 364hp 354trq.
I have a built bottem end
stage 2 patriot heads
226/226 112 lsa cam
spec stage clutch
LT pacesetters
3" exhaust
42 lb injectors
dyno tuned by Shular racing
These numbers seem very low. I currently still have a stock intake and TB. hopefully a 90/90 combo will fix these figures?
BTW i have a 2000 M6 Z28.
I have a built bottem end
stage 2 patriot heads
226/226 112 lsa cam
spec stage clutch
LT pacesetters
3" exhaust
42 lb injectors
dyno tuned by Shular racing
These numbers seem very low. I currently still have a stock intake and TB. hopefully a 90/90 combo will fix these figures?
BTW i have a 2000 M6 Z28.
Is there a brick in your exhaust? That is insanly low, do you have cats? If so they could be clogged. If not your tuner should be able to tell you whats going on. Dont except those numbers out of a m6.
Thread Starter
Staging Lane
Joined: Oct 2004
Posts: 56
Likes: 0
It was on a mustang dyno. I have no cats its an M6 and i believe the cam specs are .269/.589
I guess he leaned it out a little bit and i really hope he tuned it cuz i payed him 400 for dyno time. i have a 90/90 combo on the way as well. with my setup what do you guys think it should be reading.?
I guess he leaned it out a little bit and i really hope he tuned it cuz i payed him 400 for dyno time. i have a 90/90 combo on the way as well. with my setup what do you guys think it should be reading.?
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
TECH Apprentice
Joined: Sep 2005
Posts: 339
Likes: 0
Originally Posted by F-bodyLuv
It was on a mustang dyno. I have no cats its an M6 and i believe the cam specs are .269/.589
I guess he leaned it out a little bit and i really hope he tuned it cuz i payed him 400 for dyno time. i have a 90/90 combo on the way as well. with my setup what do you guys think it should be reading.?
I guess he leaned it out a little bit and i really hope he tuned it cuz i payed him 400 for dyno time. i have a 90/90 combo on the way as well. with my setup what do you guys think it should be reading.?
Thread Starter
Staging Lane
Joined: Oct 2004
Posts: 56
Likes: 0
Originally Posted by Ksett
Is this with an LS1 intake? If this is the case your numbers might not be as bad as they seem since you were also on a Mustang dyno.
12 Second Club
iTrader: (11)
Joined: Jan 2005
Posts: 1,191
Likes: 0
From: NC, Charlotte / SC, RockHill
Originally Posted by F-bodyLuv
Yeah STOCK LS1 intake. and STOCK throttle body.
ur numbers seems very low , I made over 350+rwhp & 360+rwtq with only mods in my sign. plus I still have ls1 intake and TB.
do a compression test if nothing worked.
Originally Posted by F-bodyLuv
Just dyno'd my car and she made 364hp 354trq.
I have a built bottem end
stage 2 patriot heads
226/226 112 lsa cam
spec stage clutch
LT pacesetters
3" exhaust
42 lb injectors
dyno tuned by Shular racing
These numbers seem very low. I currently still have a stock intake and TB. hopefully a 90/90 combo will fix these figures?
BTW i have a 2000 M6 Z28.
I have a built bottem end
stage 2 patriot heads
226/226 112 lsa cam
spec stage clutch
LT pacesetters
3" exhaust
42 lb injectors
dyno tuned by Shular racing
These numbers seem very low. I currently still have a stock intake and TB. hopefully a 90/90 combo will fix these figures?
BTW i have a 2000 M6 Z28.
Your numbers do seem extremely low for H/C. My '99 Cobra with Mach 1 motor w/LTs, tune and CAI did 345rwhp on a Mustang dyno and you're doing 20 more than my Cobra. Those injectors are WAYY to big bro, get rid of them and either put the stockers back in or get some SVO 30#ers. With the FAST 90/90 combo, you'll see about 10-15 more on top of what you have now. What's the compression ratio on your built bottom end?? Does anyone know what 364rwhp on a mustang dyno is when converted to dyno jet numbers??
dont worry about the injectors there not too big your tuner can make them run how they are suppose to, especially with a h/c setup should be no problem.
typically the mustang dyno reads lower than a dynojet i did 427 " I have cats and a muffler" on a dynojet and i think 378 on a mustang my mods are in my sig, do you have a k&n air filter if so check your maf and see how dirty the sensor are, clean your maf with a paper towel. On my dyno run my car was being stingy made low power, I cleaned my maf and the car was so much more easy to tune and power was there. The 90/90 setup will be awesome atleast 20 hp/tq increase.
typically the mustang dyno reads lower than a dynojet i did 427 " I have cats and a muffler" on a dynojet and i think 378 on a mustang my mods are in my sig, do you have a k&n air filter if so check your maf and see how dirty the sensor are, clean your maf with a paper towel. On my dyno run my car was being stingy made low power, I cleaned my maf and the car was so much more easy to tune and power was there. The 90/90 setup will be awesome atleast 20 hp/tq increase.
Banned
Joined: Oct 2006
Posts: 101
Likes: 0
You might check to make sure your throttle body is opening all the way.
Check to make sure that the floor matt is not in the way of the gas pedal, and do the throttle bump stop mod. I know, it sounds stupid, but stupid happens all the time..
Next I would start questioning the tuner..
Check to make sure that the floor matt is not in the way of the gas pedal, and do the throttle bump stop mod. I know, it sounds stupid, but stupid happens all the time..
Next I would start questioning the tuner..
Banned
Joined: Oct 2006
Posts: 101
Likes: 0
Those numbers probably aren't far off for a H/C on a Mustang Dyno.
Something else I noticed is you have 3" exhaust yet you have a 2.5" ypipe
If that is true, I'd replace that 2.5" ORY with a 3" muy pronto. What catback are you running?
Something else I noticed is you have 3" exhaust yet you have a 2.5" ypipe
If that is true, I'd replace that 2.5" ORY with a 3" muy pronto. What catback are you running?
Last edited by ZCAMARO; Nov 1, 2006 at 01:31 PM.
sorry but those numbers are right on for patriot performance crap. that 226 cam is a patriot cam as well? switch to a comp xe-r or something comperable and it should be over 400rwhp even on a mustang dyno. patriots parts have always made low numbers.
Originally Posted by GTslOw
sorry but those numbers are right on for patriot performance crap. that 226 cam is a patriot cam as well? switch to a comp xe-r or something comperable and it should be over 400rwhp even on a mustang dyno. patriots parts have always made low numbers.
I had Patriot stage 2 LS6 style heads on my car with a VHP XXX cam Along with other supporting mods and I made a decent peak number which was 380 hp. Even after hours of tuning with 2 different tuners it didn't feel crisp at all, or fast either. I switched to AFR 205's. I made a lower peak number but the car feels 200% different from what it was. The intake runner on the Patriot heads is rather big, to get the most out of them you need to run a large cam or go with a boost set up of some kind. But before you change anything, I would either talk to your tuner or a different one. Be 100% sure that the car is tuned correctly. Before they strap it down to the dyno your tuner should be taking your car out to do all the drivability and part throttle tuning. After that is done, then strap it down to the dyno and do the wide open throttle tuning. If the tuner is just strapping it down to the dyno and your in and out in a few hours its NOT done right.
Last edited by mhoglund; Nov 2, 2006 at 09:16 AM.