piston choice

[mcgee19d]

I'm doing a rebuild on a 1994 5.0 planning on gt40p head gt40 intake and a bcam. I recently got a free set of dss forged .40 over flat tops would they be worth the machine shop with that setup? Any advice is welcome.

 

[revhead347]

I don't like to take a stock block more than .030" over. If you are ok with that, just about all the aftermarket pistons are going to give you enough valve relief for just about any setup.

Kurt

 

[mcgee19d]

So either stay with what I got or ugprade to a sportsman block for those pistons

 

[revhead347]

You don't have to go to a Sportsman block for those pistons. You can bore a stock block out to .040", just that I personally don't feel comfortable with that little bit of metal between the piston and the water jacket. Usually you don't pick the block to fit the piston. You usually pick a piston to fit the block.

Kurt

 

[mcgee19d]

Yeah they were free. Ill save them for something that wont be a daily driver

 

[revhead347]

Not sure what you are doing with the engine, but you can get a set of those speedpro hyper pistons for like $200 on ebay.

Kurt

 

[mcgee19d]

The car runs and drives fine just high miles gonna do a rebuild and beef it up some. It'll still be a daily driver so I'm not going very extreme with it.

 

[revhead347]

Those Speed pro hyper pistons are great for almost any N/A application. They will hold up almost to the limit of what a stock block can handle. If you are building a mild N/A engine, then it is a much better option to go with a good hyper piston then to spend a ton of money on an aftermarket block.

Kurt