Hi All! I’ve been out of the muscle car mechanics for 20+ years while wrenching on Army helicopters and have a few questions on a 440 that I’m going to be rebuilding and need a little help.
What I have is a 76 440 cast crank automatic from a motor home. Will be going into a 68 Charger R/T 4 speed. Considering a set of 915 heads since that is what I ran on my cars back in the day. Gear will be a 354 posi. I have not settled on a cam but would look for something for street racing.
My questions are:
With the 76 short block will my compression be close to the factory 10:1 for a 67/68 engine with 606 or 915 heads?
I understand the 906 heads have a larger exhaust valves and better flow, but do the 915 heads with the closed chamber make that much difference in performance compared to 906 heads?
I don’t remember if the cast cranks is internally or externally balanced?
Can I use my 68 flywheel on the 76 short block with the cast crank?
If I remember correctly, if I go to a steel / forged crank I will need a damper & flywheel from that type of crank?
Any suggestions for a cam?
Any help would be greatly appreciated!
Thanks,
Paul
What I have is a 76 440 cast crank automatic from a motor home. Will be going into a 68 Charger R/T 4 speed. Considering a set of 915 heads since that is what I ran on my cars back in the day. Gear will be a 354 posi. I have not settled on a cam but would look for something for street racing.
My questions are:
With the 76 short block will my compression be close to the factory 10:1 for a 67/68 engine with 606 or 915 heads?
I understand the 906 heads have a larger exhaust valves and better flow, but do the 915 heads with the closed chamber make that much difference in performance compared to 906 heads?
I don’t remember if the cast cranks is internally or externally balanced?
Can I use my 68 flywheel on the 76 short block with the cast crank?
If I remember correctly, if I go to a steel / forged crank I will need a damper & flywheel from that type of crank?
Any suggestions for a cam?
Any help would be greatly appreciated!
Thanks,
Paul