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Author Topic:   406 engine/clearances
~~dirtmaster~~
Dirt Roller

Total posts: 10
posted January 23, 2005 01:36 AM  
Ok I am going to build a 406, have been looking around for a used shortblock but nothing.
Ok, I want to shoot for 13:1- 14:1 comp, what will I haft to do to achieve this with double hump heads? Will i need to mill the pistons or do they have pistons available?
will be running a roller cam on a restricted 2 brl engine, on a 1/4 mile track I dont have the cam specs yet but might give you an idea of cam size.
what cams are best to run on a restricted engine like this?

Donnie Ross
Dirt Freak

Total posts: 264
posted January 23, 2005 06:58 AM  
call Charles at camcraft tell him the specs you are going to use he will dial you in on the cam then go from there.

Istock66
unregistered Total posts: 264
posted January 23, 2005 08:53 AM           send a private message to Donnie Ross   Edit/Delete Message   Reply w/QuoteBBBBBB
If its a claimer motor

speed pro h634 is 13.7 to 1. Ive got two motors with them and humps.

kb makes pistons if you want a lighter piston, the motor will run better for another 100 bucks spent. they are about 150 grams lighter, which is a lot.

For a 1/4 mile I would build a 383 myself.

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