this in in my friends 69

I'd like to generate around 650 horsepower
on motor and then spray a 250 shot.

Motor stats are as follows:

383 cubic inches
13:3 compression
Dart 220 heads fully ported with Victor High Rise Intake
2.10 intake valves, exhaust I believe they are 1.6 or 1.65.
My rockers are 1.6 on the intake and 1.5 on the exhaust.
My previous cam specs were around .676 lift on the intake and really can't remember the rest.

Turbo 400 tranny with brake and 4200 stall.
4:11 gears.

69 Camaro

Let me know what you think.

he's looking for a solid roller, any suggestions ? Also do you guys this goal is acheviable

DD2K3 gives out 643HP at 6500RPM, 658HP at 7000RPM, and 655 at 7500RPM Peak torque is at 554ft-lbs at 5500RPM.

I used dart IE 220 Heads (the closest I could find), with 13:1 compression, 850 carb, tunnel ram intake, stepped tube racing headers, and comp cams mechanical roller... part number 12-801-9. I have it set straight up in the progam (106/106).

If this estimate is anywhere in the ballpark, I think your engine will put out more because of the ported heads. You might want a higher stall to match the torque curve of this cam though.

This is just an example, I'm positive there are better cams out there for this application. UDHarold will probably have a good recommendation.

Plus, this cam isn't designed for nitrous.

Do you by chance have flow numbers for the heads? They would be very helpful when picking a cam.

Also, the 4200 stall is going to make picking a cam a little tough IMO. Because with 13.3:1 compression and a 650 HP goal you will probably want something fairly big that will let the engine spin up a bit -- a 4200 converter might be a little tight for that.

IMO with engines that radical it is difficult to nail down a cam off the bat, it might be easier to know what he has in it now and what he would like to change (more RPM, less RPM, etc).

Another option would be to contact UDHarold at Lunati direct, he might have some ideas.

I think you can go two ways. Pick a motor cam and not pick up as much on spray but run better on motor alone or pick a nitrous cam and run slower on motor but pick up more on spray. The net run for both cams on spray will be very close.

For a motor cam I'd be looking at something around 270/278 @.050 108lsa and .675+ lift. Also, the 4200 converter will need to be changed (as Eric mentioned) to something closer to 5800. Of course, if your running that big dose of spray the tight converter may be just the ticket.

Whats the current cam specs and what's it run?

thanks guys,

he doesn'rt know the current cam specs and hasn't run it or dynoed it.

I'll forward this to him.


thanks for all your time.