Overdrive and camshaft selection
I haven't had a stick with a big cam in my car before. I have always had 3 speed autos built to handle the power.
Being that I am changing over to a t56 magnum, I have been thinking about how my build might work with over drive.
I feel like it should work fine, but I want some additional thoughts.
489 big block
Jegs 290 heads
Isky SFT cam
250/256 @ .050
.605/.620 lift (lash is I believe .016 and .018)
edelbrock proflo 3 fuel injection--xt manifold(able to adjust cruise A/F ratio and have it currently set at 14.8)
long tube headers-2 inch primary/3inch exhaust
I bought the magnum so I can have the benefit of both over drives as I do interstate and back road driving primarily. I take beach trips/trips down south and soon trips up north. Usually they are about 200 mile stretches.
My goal is to keep the engine sitting around 2000rpm. I currently have a th400 with a 3500 stall so I have never really gotten to experience that. At 75 right now the thing sit around 3800 on the free way. I feel like the converter slips quite a bit.
Would my cam work in this situation?
Planned cruise speeds:
55 in 5th(.8) would be 2000rpms
65 in 5th(.8) would be 2400
65 in 6th(.63) would be 1800--might work?
70 in 5th(.8) would be 2500
70 in 6th(.63) would be 2000
75 in 5th(.8) would be 2700
75 in 6th(.63) would be 2200