building a FAST legal small block

Heads, intake and exhaust manifolds are fixed by FAST class rules.

Your heads need to be the the stock heads for the year car you are building and casting numbers are checked. Mod them how you want but everything needs to fit under the stock valve covers.

Intake manifold needs to be the stock intake that would have have came on the engine (For you it would be the cast iron 1971, 340 intake.). Do what mods you want but casting numbers are checked.

Exhaust Manifolds must be the ones that would have came on the engine of that year. Do what mods you want but casting numbers are checked.

The carb needs to be the carb that would have came on the car. Do what mods you want but casting numbers are checked.

Your engine just needs to be a small block mopar of any year as long as it looks stock.

So....... If you want to run with the big boys in FAST class you will need to stroke it and push your compression out of the range of pump gas.

Or you could just be happy with 13s. It aint easy to launch the tires (Stock repop) that are required in FAST.