For those who wanted some info on our custom turbo cam.....
It idles very nice. No big lope or anything. Drives around the city like a stocker. Pulls about 13 inches at idle.
Throttle tip in is SO much better than the 292s cam we were using. Very quick response and easy to drive.
Turbo lag is very minimal. But it's hard to tell this with our converter.
Our 60' times decreased by 2 to 3 tenths vs. the 292 cam. Kelly was consistantly in the mid 1.6 sec. range. And that's only leaving the line at 3000rpm. We need to do some work on raising that a bit. We tried a 4000rpm launch but the track couldn't hold it. She just spun way past the 60' mark.
The ETs and MPH were very consistant for a change.
11.06, 11.07, 11.14, 11.19. and a 13.something (spinning).
123-125 MPH was the norm all day. 101mph in the 1/8 mile!
So the cam worked well, but I'm not convinced yet that it's any better than Mike's 274 cam. The two cams are real close on the exhaust side, but our cam has a bit more duration on the intake.
But I'm satisfied with it. It'll stay in there.
We did end up with a headgasket leak between #5 and the water jacket. The O-ring gap created a path for water to leak into the cyl. So we have the head back off replacing the Stainless Steel O-rings so that the end gaps are tighter and located away from all of the water jackets.
We'll race again over Memorial Weekend down here in Tucson.
Later,
Will
It idles very nice. No big lope or anything. Drives around the city like a stocker. Pulls about 13 inches at idle.
Throttle tip in is SO much better than the 292s cam we were using. Very quick response and easy to drive.
Turbo lag is very minimal. But it's hard to tell this with our converter.
Our 60' times decreased by 2 to 3 tenths vs. the 292 cam. Kelly was consistantly in the mid 1.6 sec. range. And that's only leaving the line at 3000rpm. We need to do some work on raising that a bit. We tried a 4000rpm launch but the track couldn't hold it. She just spun way past the 60' mark.
The ETs and MPH were very consistant for a change.
11.06, 11.07, 11.14, 11.19. and a 13.something (spinning).
123-125 MPH was the norm all day. 101mph in the 1/8 mile!
So the cam worked well, but I'm not convinced yet that it's any better than Mike's 274 cam. The two cams are real close on the exhaust side, but our cam has a bit more duration on the intake.
But I'm satisfied with it. It'll stay in there.
We did end up with a headgasket leak between #5 and the water jacket. The O-ring gap created a path for water to leak into the cyl. So we have the head back off replacing the Stainless Steel O-rings so that the end gaps are tighter and located away from all of the water jackets.
We'll race again over Memorial Weekend down here in Tucson.
Later,
Will
