only 351.5 rwhp & 323.3 rwtq on 224/224 patriot ls6 head combo...why so low?
05-02-2005, 05:23 AM
#21
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Originally Posted by PREDATOR-Z
Crane/VINCI rockers would be better. variable lift. But mucho $$$$
05-02-2005, 07:34 AM
#23
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Originally Posted by SAM98WS6
Fix what is wrong with your car first...dont add to the mess. Numbers are low.
05-02-2005, 08:24 AM
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Perhaps the heads aren't right... Not every item that comes off of the assembly the line is 100% good. Perhaps one of the heads has a malformed runner or combustion chamber. Put your old heads back on, or borrow a set of LS6 heads to see if the numbers change for the better. I know its a pain in the a** to swap heads, but its better than dropping a bunch of cash trying to chase a ghost. Just a suggestion...
05-02-2005, 11:36 AM
#26
I'd definitely try another dyno, or at least go to the track and see how the trap is.
Honestly your car seems to be down about 50hp, and torque is off too. I don't buy this "the cam is too small for the heads", I'm running a smaller cam then yours on AFR's and making good power. Hell with the stock heads it made 380+. There's no reason your shouldn't do 380-390 easily. Redyno it at a different place or run it, if its not making good power or a decent trap speed, start doing some basics like a compression check or leak down.
Honestly your car seems to be down about 50hp, and torque is off too. I don't buy this "the cam is too small for the heads", I'm running a smaller cam then yours on AFR's and making good power. Hell with the stock heads it made 380+. There's no reason your shouldn't do 380-390 easily. Redyno it at a different place or run it, if its not making good power or a decent trap speed, start doing some basics like a compression check or leak down.
05-02-2005, 11:57 AM
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im going to the dyno this saturday, livernois' open house, and im gonna make sure i get on the dynojet. its $50 for 2 pulls, so maybe ill get on their mustang too. in any case, i want to get mine up to 400 on the mustang dyno...whats it gonna take?
05-02-2005, 01:20 PM
#29
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Originally Posted by 8KickassRS9
fora mustang dyno u did good. u prolly would see 380-390 on a dynojet..
Do you plan to get it to a track anytime soon? Especially if the dynojet numbers are down, you'll probably want to make at least a few track runs at that point. I know I couldn't wait to get to the track when I installed my cam and hit 343 rwhp. (that's a different story though.
) Last edited by blkZ28spt; 05-02-2005 at 01:27 PM.
05-02-2005, 01:27 PM
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First, what did the car put down before the mods? Next run it at a track. It sounds low, but the dyno could be super stingy. Run the car at the track first. Report back with the time slip (especially the MPH). Figure out if the dyno was super stingy.
05-02-2005, 01:28 PM
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I made 382rwhp 346rwtq on a MD (APE) w/pp s2 5.3L heads and a 232/228 112lsa cam FWIW
Also, on a dynojet when it was hot out i did 390 RWHP / 370 RWTQ
-Steve
Also, on a dynojet when it was hot out i did 390 RWHP / 370 RWTQ
-Steve
05-02-2005, 01:36 PM
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Why not put the car on a dynojet? Or run the car at a track?
My own personaly car made 344 rwhp on a mustang dyno when I had heads and cam...I was depressed to say the least. I took the car to the track and it ran 11.31@ 120
I was bummed over a low dyno number when I only had it on the dyno to tune it for the track.
I personally do not like any of the aftermarket rockers for a LS1 except the Jesel Mohawks.
I think your valve springs will not be able to control the faster rocker ratio and you will lose power.
If you want a dyno number go to a dyno jet...if you want a number that really means something go to the track.
I have seen people dyno low but then thier cars run great at the track. I have seen people dyno high and run like crap at the track. I have also seen people dyno low and never run the car at the track because of a poor dyno number.
I know people that dyno 450 on a "happy" dynojet and not run as well as my 345rwhp car ran.
I have seen people ice thier intakes on the dyno,run 50 lbs of air pressure,no belts , have fans with bags of ice in front of them,ice on the intakes etc etc. trying to trick the dyno to get a good number. Then get wore out on the street by a car that dynoed 30rwhp less with no dyno tricks and act confused about how they could have lost that race.
Its a dyno...it for tuning...not for racing.
sorry for the rant
My own personaly car made 344 rwhp on a mustang dyno when I had heads and cam...I was depressed to say the least. I took the car to the track and it ran 11.31@ 120
I was bummed over a low dyno number when I only had it on the dyno to tune it for the track.
I personally do not like any of the aftermarket rockers for a LS1 except the Jesel Mohawks.
I think your valve springs will not be able to control the faster rocker ratio and you will lose power.
If you want a dyno number go to a dyno jet...if you want a number that really means something go to the track.
I have seen people dyno low but then thier cars run great at the track. I have seen people dyno high and run like crap at the track. I have also seen people dyno low and never run the car at the track because of a poor dyno number.
I know people that dyno 450 on a "happy" dynojet and not run as well as my 345rwhp car ran.
I have seen people ice thier intakes on the dyno,run 50 lbs of air pressure,no belts , have fans with bags of ice in front of them,ice on the intakes etc etc. trying to trick the dyno to get a good number. Then get wore out on the street by a car that dynoed 30rwhp less with no dyno tricks and act confused about how they could have lost that race.
Its a dyno...it for tuning...not for racing.
sorry for the rant
05-02-2005, 02:02 PM
#34
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Originally Posted by BrentB@TEA
Why not put the car on a dynojet? Or run the car at a track?
My own personaly car made 344 rwhp on a mustang dyno when I had heads and cam...I was depressed to say the least. I took the car to the track and it ran 11.31@ 120
I was bummed over a low dyno number when I only had it on the dyno to tune it for the track.
I personally do not like any of the aftermarket rockers for a LS1 except the Jesel Mohawks.
I think your valve springs will not be able to control the faster rocker ratio and you will lose power.
If you want a dyno number go to a dyno jet...if you want a number that really means something go to the track.
I have seen people dyno low but then thier cars run great at the track. I have seen people dyno high and run like crap at the track. I have also seen people dyno low and never run the car at the track because of a poor dyno number.
I know people that dyno 450 on a "happy" dynojet and not run as well as my 345rwhp car ran.
I have seen people ice thier intakes on the dyno,run 50 lbs of air pressure,no belts , have fans with bags of ice in front of them,ice on the intakes etc etc. trying to trick the dyno to get a good number. Then get wore out on the street by a car that dynoed 30rwhp less with no dyno tricks and act confused about how they could have lost that race.
Its a dyno...it for tuning...not for racing.
sorry for the rant
My own personaly car made 344 rwhp on a mustang dyno when I had heads and cam...I was depressed to say the least. I took the car to the track and it ran 11.31@ 120
I was bummed over a low dyno number when I only had it on the dyno to tune it for the track.
I personally do not like any of the aftermarket rockers for a LS1 except the Jesel Mohawks.
I think your valve springs will not be able to control the faster rocker ratio and you will lose power.
If you want a dyno number go to a dyno jet...if you want a number that really means something go to the track.
I have seen people dyno low but then thier cars run great at the track. I have seen people dyno high and run like crap at the track. I have also seen people dyno low and never run the car at the track because of a poor dyno number.
I know people that dyno 450 on a "happy" dynojet and not run as well as my 345rwhp car ran.
I have seen people ice thier intakes on the dyno,run 50 lbs of air pressure,no belts , have fans with bags of ice in front of them,ice on the intakes etc etc. trying to trick the dyno to get a good number. Then get wore out on the street by a car that dynoed 30rwhp less with no dyno tricks and act confused about how they could have lost that race.
Its a dyno...it for tuning...not for racing.
sorry for the rant
I agree.
05-02-2005, 02:26 PM
#35
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I've seen 380-390 at APE on their Mustang dyno. You do seem low. Do you know the name of the guy that did your tune at W2W? Was it Kirk? If so, he does APE's tunes also.
It would be interesting to see what your car does at Livernois.
Dennis
It would be interesting to see what your car does at Livernois.
Dennis
05-02-2005, 04:10 PM
#36
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dont feel bad about the numbers mustang dynos put bad #'s down i just dynos myu car on one and it made 330rwhp and 2248 torque on a 150 shot. yea thats right 2248 torque so maybe it was just them but we have trans ams and camaros stay off the mustang dynos right =)
05-02-2005, 10:49 PM
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im gonna try everything i can to figure out whats going on here. kirk did the tune with dan from w2w, i think it runs good, i still get misfire code though. should i edit the knock table? this saturday well see what the difference is. i do have a slp maf, but kirk said he fixed the tables a bit. like i said, there was a guy earlier who lost 14.6% going 2 miles down the road to a dynojet. i hope i am like him. i think i should get a new cam next year, unless im like that guy running a 11 with this setup. that would be nice...
05-03-2005, 06:22 AM
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I think your cam size is good. Thats the most popular size. If your car is misfiring after the tune, I'd schedule to take it back to them. What did they charge you? Seemed like you were on there for a while.
05-03-2005, 01:16 PM
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Originally Posted by blkZ28spt
Even that would be dissapointing for a heads/cam car.
My car stock with only a catback made 295rwhp on the Livernois Dyno-Jet and ran 13.4@104 consistently. With their Stage 1 LS1 heads and the 224/228-114 cam, headers, and x-pipe I made 403rwhp and 387rwtq and run 12.3@119.9mph with traction problems (2.3 60').
-Rick