more cam/intake/for a 410

[burnoutking-1]

So here's the story,    Built a 410 ci 360 for an '81 dodge ram mud truck I have(weight 5800lbs) acouple years ago. This spring I put the engine into my challenger, and want to maybe do some top end/ cam, etc over the winter.

The engine was built for a heavy truck, huge tires........now it's in a light car.

Here are current specs..

4.040 bore/4.000 stroke(cast crank)
.232/.237 dur./.576/.584 lift
beehive valve springs
roller rockers
iron ram heads,pocket port, gasket matched
2.02 / 1.625 valves
weiand dual plane ..deep port match
750 speed demon
10.2:1 comp. forged pistons
forged rods

So what I am thinking is going with a cam maybe in the 250 ish range, and a single plane intake.
Higher comp. would be nice(should have gone that route initially anyways), but a thinner head gasket is about all I can do for that, as I am not doing any bottom end.

My heads will really be the limiting factor for cam and intake especially. Valve spings are installed @ 1.750 height with a 117lb seat press, can be installed at different height to increase spring pressure, and lift shouldn't be an issue, as the coil bind is 1.060.

But any ideas on cam and intake choice that would work best are greatly appreciated.

Have a 2800 stall now, but am expecting to be in the 3400-3600 range with more cam. Tranny will also be upgraded over the winter, shift kit, etc. Rear gears will probably be 3.92. Street tires are 275/60R15,  30" slicks for the track.

Thanks,
Cory.



 

[burnoutking-1]

Also if anyone knows what a person could expect for HP, if I can get to around 550 with those upgrades, it would be worth it.  Engine is 450-475 right now. Without raising comp., not sure if a cam and intake would add that much anyways, just probably move more power into a higher rpm range. I guess if I don't add at least 50 peak HP, then I wouldn't bother doing anything right now.

Let me know what you think.

[vinb]

Leave the cam alone, 250 might hurt it.

Change the Intake, Convertor, and work on the suspension and go out and have fun at the track..

Why spend more money if the engine is sealed and running good now..

[Chryco Psycho]

I tend to agree , the cam looks decent & is not the weak link , I would look into an Eddy RPM Air Gap , good 750 Proform carb & some better heads like the RHS or Indy LAX , or W2/ W5

[burnoutking-1]

True, the motor is very strong right now, just thought if the numbers were that much better, a cam and intake may be worth it.

I need to do the tranny(it was rebuilt, but it isn't handling the power very well), and rear gears anyways, which i believe are 2.93's, so 3.91's would also make a world of difference.

And may just see about putting an M1 on.

Thanks.