quote:

Originally posted by ts393c:

quote:

Originally posted by Mike Rietow:
[QUOTE]Originally posted by ts393c:
Only reason for asking is. I never felt the car ran as good as it should. 6.40 3500# car. It works good and deadly consistent.

That's not bad for what you have. It's really a max effort in between nitrous / N/A.

I've built a few like this, one a 427 went 5 teens 1/8 with 400 on a plate system.

A little more compression and a more max effort N/A cam and it would make 50 more hp for you. This is a in between nitrous cam you have.

We're working on a pump gas in between now similar idea on the cam to run fairly well N/A and exceptionally nitrous.

Kirk at Bullet Cams.

Honestly I have always felt the car should run in the 30 to high 20 range. I do run radials. They are a little faster but not much.

quote:

Originally posted by TOP38:
When using the right cam the only reason to install it a few degrees advanced is to account for timing belt or chain stretch which retards the cam timing.

With your CID, RPM and compression and especially for that weight, you have too much duration. Without knowing the exhaust to intake flow ratio I can't comment on the 14 degree split on duration but I would say it's too much also. Both of these adjustments would close the lobe separation.

If your happy with the current performance then just keep racing, if not them there is room to improve. BTW there is nothing wrong with Comp Cams.

quote:

Originally posted by NC3x58:

quote:

Originally posted by TOP38:
When using the right cam the only reason to install it a few degrees advanced is to account for timing belt or chain stretch which retards the cam timing.

With your CID, RPM and compression and especially for that weight, you have too much duration. Without knowing the exhaust to intake flow ratio I can't comment on the 14 degree split on duration but I would say it's too much also. Both of these adjustments would close the lobe separation.

If your happy with the current performance then just keep racing, if not them there is room to improve. BTW there is nothing wrong with Comp Cams.

Is the usual number around 2* advanced from what the cam card says to account for the belt stretch?

quote:

Originally posted by Mike Rietow:
Max effort N/A would be around

730 670

270 280

106 installed on a 102 3500 lbs

With a dominator

14.5:1 compression

750hp

quote:

Originally posted by Triple Nickel:
Absolutely picked up 0.15 going from a bias ply to a drag radial right here.

3200 lbs, 049 oval ports, 598, injected on methanol, 1.80 PG, 4.30 gear, cal tracs and split mono's.

14x31x15 goodyear vs. 29.5x10.5x15 Mickey PBR. 6.05 vs. 5.90 back to back passes. Swapped tires and rims after the first shot on bias plys MPH was the same. That car hit the tire pretty hard tho, was awesome on all sorts of tracks until we stepped up the power level to the 1000 hp range. Then it started trying to ride the bumper most days and was a little harder to manage and bracket race.

quote:

Originally posted by Mike Rietow:
https://youtu.be/5Fdhx6u-d5o
If I put radials on the Ripper it would go sub 1.20 60 ft.n/a home brew sbc

quote:

Originally posted by ts393c:
All your ET n/a is by the 330’ cone and it starts with how you 60 foot.

I'm starting to see the light. I'm just trying to learn a few things here. I will admit I never knew much about camshafts but I'm always willing to learn.

quote:

Originally posted by TOP38:
When using the right cam the only reason to install it a few degrees advanced is to account for timing belt or chain stretch which retards the cam timing.

With your CID, RPM and compression and especially for that weight, you have too much duration. Without knowing the exhaust to intake flow ratio I can't comment on the 14 degree split on duration but I would say it's too much also. Both of these adjustments would close the lobe separation.

If your happy with the current performance then just keep racing, if not them there is room to improve. BTW there is nothing wrong with Comp Cams.

quote:

Originally posted by Mike Rietow:

quote:

Originally posted by ts393c:
All your ET n/a is by the 330’ cone and it starts with how you 60 foot.

I'm starting to see the light. I'm just trying to learn a few things here. I will admit I never knew much about camshafts but I'm always willing to learn.

I had one guy I talked camshafts 25 years from when he was at Comp Cams to Lunati to Bullet Cams named Richard Woods, he's putting out fires for an automotive parts manufacture no longer in the high performance industry, however he has turned us on to a new contact at Bullet Cams named Kirk, super nice guy. Talk with Kirk.