John I need your advive on a 521" used for mud & Dirt drags.
This was a performance Automotive wearhouse /PAW 521" Dinosaur kit.
The 521"is made of the following.
Ross 4.470 bore with 28.65 cup ,
4.150 stroke cast crank
Edelbrock 75cc performer 60679 heads
singel 4 victor intake 4500 top, 1050 Dominator
The engine was specked for 10.5 to 1 on compreshion.
Know we are looking to get as much power as possible out of this combination and am looking at doing the following.
Flat top or dome pistons
I also have a Howard solid roller 410-108, 270 deg 108 Lobe center 708 lift
any advice would help
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