I am thinking of getting some aluminum heads for my 69 with a 396. if i remember right the motor is out of a 70 or 72 chevelle. it is basically a stok motor with an air gap intake and a holly 750 on it.
I am considering a head and cam package just for the ease of everyting working together.
There are a ton of good heads for Chevy big blocks, Merlin, Brodix, dart. Why aluminum heads anyway is it for weight? Or are you upping the compression? Just curious. I have iron heads (merlin) I am happy with them.
For a 396 some aftermarket oval port heads would be ideal - will likey outflow OEM rectangular heads while keeping small ports and torque curve down low.
Brodix Racerite or AFR ovals are not cheap but would probably wake your car up with a cam swap. I imagine both companies could make recommendation on a cam as well. Assuming you are on a hydraulic flat tappet now, are you planning to run the same or upgrade to roller?
Original 350 PG, Now 427 4 speed
Owned since 1977
i am sure it is not the best and i am not expecting the best considering the budget i have however i do want the max bang for the bucks i do have to spend. I am not looking to make a race car by any means. just a fun cruiser.
What casting number heads do you have now? You can use some closed chamber ovals like 215 or 063, or some open chamber ovals like 049 and with some machining they can work very well with your 396. Even the 'peanut port' heads have potential as a member here named Mark Jones has shown (his screen name is VortecPro). I think you could spend about half of what that Summit package costs on some old GM iron ovals and get the same performance result. Try to find Mark here, he is a machinist by trade and has supplied hardware to several folks here and at Team Chevelle.
The 781 is great, but it's also 119cc chamber. On a 402, your compression will be around 8:1. Unless the pistons have been changed.
For an alum head, Edelbrock makes a 290c Roval with a 100cc chamber. It is for marine applications. Flows well and will raise your compression.
Single turbo alum 5.3 LS
9.45 @ 145.35 so far.....
2000 C5 Corvette Auto 10.99 @ 123.8 NA
I'll be back for you Jack, and I'll let the machine speak!