Finally had my car dyno tuned at Speedy Dyno 1997 Mustang GT PI Engine Swap Comp XE270AH cams, beehive springs, etc. BBK 78mm TB/Plenum KN CAI Stock Manifolds UPR O/R X w/ Mac Mufflers 3:73 gears Car did 260/270 on a Superflow, which I hear they read about 10% lower than a dynojet? Car runs great now, pulls great above 3K. A lot quicker than my old npi shitbox lol. what do you guys think I would have ran on a dyno jet? Link: [video=youtube;y7n4eYdG8T4]https://www.youtube.com/watch?v=y7n4eYdG8T4&list=UUdFy7wBnxgnS3exOGyarVGQ[/video]
Yeah I know I wish I had the money at the time to install long tubes. They are my next mod. I thought about installing a tubular k member also but this is my dd and I heard they can be somewhat of a rough ride
Not bad numbers but like dv3 said, long tube headers will help out so much for a cammed car. Car looks great too.
Just run a upr kmember with perches and it will ride just fine. I run cut factory springs up front and it rides really smooth
I would have had that don't when swapping the motor in.... If you do a k swap do the LTS at the same time
Yeah I would have too... But I was on a time crunch and was running out of spending funds, so i really didn't have a choice at the time. what long tubes are you guys running? I'm wondering how much louder the LTs will be bc I drive this thing everyday, it's already pretty damn loud and the neighbors on campus yell at me in the morning lol
I bet it could've shown better numbers if the back wasn't against the wall like that. Sent from my iPhone using Tapatalk
It looks closer than 5 feet, more like 2-3 feet, and unless they had a pipe redirecting exhaust it does cause restriction. When running a sample in a wind tunnel, for a slow speed 40mph wind tunnel, the exhaust has to be at least 5 feet away from any objects, for accurate results. For a 100 mph + wind tunnels, over 100 feet of clearance is required. Now I understand that mustang exhaust is not a high speed wind tunnel but the exhaust coming out at 6k RPM is pretty damn fast. Or maybe I'm just overestimating.
[MENTION=20216]Evilgt[/MENTION] There's your answer right there. But those #s are with cams, so a PI swapped SN still does not make the #s a GT40 5.0 with E303. He and I had a discussion on a swapped PI SN vs a E303/GT40 5.0. Can only make 270/310tq max for our race class.
Is that a complete PI swap or PI heads on a NPI short block. What if anything was used to tune it? kyle
Dont forget that the 4.6 can run long tube headers. 7.24 Exhaust 7.24.1 All cars must use OEM stock exhaust manifolds with the following exceptions: 1. Early GM 305 and Early Ford 5.0 cars may use shorty style headers 2. Ford 4.6 2V cars may use long tube headers.
Is SuperFlow the specified dyno for the class rules? I'm not quite sure what you are saying otherwise. Are you saying a cammed PI car won't make what that 5.0 setup does? Or that a stock PI long block can't?
No, DynoJet with specific settings. Kyle and I were discussing dyno #s on a PI top end, NPI bottom end SN versus a 5.0 GT40 top end with a E303. So what I was saying is that a PI top end SN95 makes less power than the 5.0 in that instance. Allowed mods on the 5.0 is GT40 heads/intake and E303 cam, shortys/full exhaust. The 4.6 is PI heads/intake LT headers/full exhaust. No tuning for either, assuming both are healthy running motors.