True duals,Exedy clutch,4.10's,stock rocker arms
01-31-2005, 06:20 PM
#1
True duals,Exedy clutch,4.10's,stock rocker arms I made the following changes to my setup:
1.) Lanes 3" true duals with X pipe and Flo-Pro Twisters installed. Replaced a 3" ORY pipe and Magnaflow catback.
2.) Yella Terra rocker arms replaced with stock rocker arms.
3.) Exedy Hyper single clutch replaced Cartek clutch (much lighter flywheel, may impact dyno numbers.)
4.) 4.10 gears installed replacing 3.73's (still stock 10 bolt rear).
Old numbers: 414.6 RWHP, 396.4 RWTQ.
New numbers: 419.0 RWHP, 400.7 RWTQ.
So I gained 4.4 RWHP and 4.3 RWTQ. The gains were pretty consistent across the board, I didn't really see the big gains under the curve I was expecting to see from the true duals. I'm still happy with the true duals, though- it sounds great, and I did pick up some power. Ground clearance is about the same as it was with my 3" ORY- the Lanes TD's really tuck up nicely under the car.
I wish I could post my dyno graph, so I could show you guys the valve float I was getting from 6500-7000 RPMs with the Yella Terras. And I am running the good Patriot dual valvesprings. No valvefloat now that I put the stock rocker arms back on.
As usual, Jeff Creech at Carolina Auto Masters did a great job with the tuning.
It's time for me to upgrade injectors, though- my poor 99 injectors are seeing 111% duty cycle now.
1.) Lanes 3" true duals with X pipe and Flo-Pro Twisters installed. Replaced a 3" ORY pipe and Magnaflow catback.
2.) Yella Terra rocker arms replaced with stock rocker arms.
3.) Exedy Hyper single clutch replaced Cartek clutch (much lighter flywheel, may impact dyno numbers.)
4.) 4.10 gears installed replacing 3.73's (still stock 10 bolt rear).
Old numbers: 414.6 RWHP, 396.4 RWTQ.
New numbers: 419.0 RWHP, 400.7 RWTQ.
So I gained 4.4 RWHP and 4.3 RWTQ. The gains were pretty consistent across the board, I didn't really see the big gains under the curve I was expecting to see from the true duals. I'm still happy with the true duals, though- it sounds great, and I did pick up some power. Ground clearance is about the same as it was with my 3" ORY- the Lanes TD's really tuck up nicely under the car.
I wish I could post my dyno graph, so I could show you guys the valve float I was getting from 6500-7000 RPMs with the Yella Terras. And I am running the good Patriot dual valvesprings. No valvefloat now that I put the stock rocker arms back on.
As usual, Jeff Creech at Carolina Auto Masters did a great job with the tuning.
It's time for me to upgrade injectors, though- my poor 99 injectors are seeing 111% duty cycle now.
02-01-2005, 04:51 AM
#5
Originally Posted by tonyb
Creech is awsome isn't he.He was just up in Maryland friday and did my car.Good #s but there is more there.Did you just have yours done today?
The 4.10's will help at the track if (BIG IF) the 10 bolt doesn't grenade. What are the stickiest tires I can run safely with the stock rear? BFG drag radials? I wanted to try the new MT drag radials, but I think they are too sticky for the stock rearend to handle.
My CC is all maxed out now,
so it looks like a 12 bolt or a 9 inch will have to wait a little longer.