346 cubes and 8000 RPMS
Thread Starter
Le Mans Master
Joined: Oct 2001
Posts: 5,577
Likes: 3
From: Southern Maryland Maryland
346 cubes and 8000 RPMS
We finally got to beat on the car alittle today doing the final round of tuning. Initally we thought that the fuel was going to change due to weather but its actually very very close, close enough to be sensor error. I've been playing with the rev limiter and today I moved it up another 200 to 8000 and took a spin. The power is back so apparently the new pushrods did the trick. 1st gear goes by soo quick is not funny, 2nd has enough tire spin from a roll to make it semi-useless and 3rd is on the verge of hooking up. I rounded the bend and turned onto the main strip rolling in 2nd gear @ 35mph, stabbed the gas and got enough wheel spin I had to soft pedal the car, tach burried @ 7500, shifted to 3rd @ 7800. RPMs dropped from 7800 to about 6000 and the tires hooked initally and faded away. Hazing the tires in 3rd gear @ almost 100mph is scary. Ran the car out to ~7800 and shifted to 4th. This car is making more power than I ever though I needed. We're going to hookup with Jim Yates for a closed track rental in a week or so, I'm crossing my fingers.
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Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
what cam, heads and springs are you running?? did you just bump the rev limiter or dyno tune for 8000??
Normally above 6000 there can nasty valve float with stock springs which hurts performance.
The world challange vettes run to 7400 rpms or use too, rules makers just dropped that to 7100 rpms.
Normally above 6000 there can nasty valve float with stock springs which hurts performance.
The world challange vettes run to 7400 rpms or use too, rules makers just dropped that to 7100 rpms.
Thread Starter
Le Mans Master
Joined: Oct 2001
Posts: 5,577
Likes: 3
From: Southern Maryland Maryland
Originally Posted by AU N EGL
what cam, heads and springs are you running?? did you just bump the rev limiter or dyno tune for 8000??
Normally above 6000 there can nasty valve float with stock springs which hurts performance.
The world challange vettes run to 7400 rpms or use too, rules makers just dropped that to 7100 rpms.
Normally above 6000 there can nasty valve float with stock springs which hurts performance.
The world challange vettes run to 7400 rpms or use too, rules makers just dropped that to 7100 rpms.
Cam: 254/260 .650 111 + 2
Springs: PSI 1224
With the right valve train a hyd setup can go to 8000, just need heads and an intake to handle it.
Race Director
Joined: Dec 2004
Posts: 13,760
Likes: 75
From: Haymarket VA
Originally Posted by Phil97SVT
Heads: ET 240 11 degree
Cam: 254/260 .650 111 + 2
Springs: PSI 1224
With the right valve train a hyd setup can go to 8000, just need heads and an intake to handle it.
Cam: 254/260 .650 111 + 2
Springs: PSI 1224
With the right valve train a hyd setup can go to 8000, just need heads and an intake to handle it.
Melting Slicks
Joined: Sep 2003
Posts: 2,911
Likes: 1
From: Augusta GA
St. Jude Donor '05-'06
Originally Posted by Phil97SVT
This was on heavy CCWs with 335 michelin pilots. The lightweight CCWs/slicks make the car feel like it has an additional 30rwhp.
Hey brother been there done that! Heck I weighed my car today with CCW drags vs the CCW clasics with PS1 335 30 on a 12 out back:
draggs 3060 streets 3140
Lost 10 RWHP with the 18 x 12s with PSs vs OEM rear with 305 30 ECSTA V700rs...
8 K... wow brother!! Sounds bad ***. Plus solid cam too, SD tune
Can't wait to see a vid or hear it idle and run up to 8k. Awesome brother!!!Dave
Thread Starter
Le Mans Master
Joined: Oct 2001
Posts: 5,577
Likes: 3
From: Southern Maryland Maryland
Originally Posted by chiefDave
Hey brother been there done that! Heck I weighed my car today with CCW drags vs the CCW clasics with PS1 335 30 on a 12 out back:
draggs 3060 streets 3140
Lost 10 RWHP with the 18 x 12s with PSs vs OEM rear with 305 30 ECSTA V700rs...
8 K... wow brother!! Sounds bad ***. Plus solid cam too, SD tune
Can't wait to see a vid or hear it idle and run up to 8k. Awesome brother!!!Dave
Le Mans Master
Joined: Nov 2003
Posts: 8,004
Likes: 250
From: Tampa Fl
St. Jude Donor '12-'13-'14
Originally Posted by Phil97SVT
LOL, I got some screen shots last night. I think it takes me just over 2 seconds to go from 80 to 110. We'll run for the fun of it.
Phil
Phil
