Piston Part Mumber

[boscov6]

I am looking at buying a set of Federal Speed Pro Pistons for a 3400 and Summitt has 2 (H847cp and h 800P). Which one is for the 3400? The H847cp has the right specs but the top is flat. The h800p has a dish top but the specs are a little off. Please help. My Forged Arias Pistons are a stock bore and my block is out of tolerance to use them. Anyone interested in them?

[60dgrzbelow0]

Here is a Comparative Piston/Ring Chart from Beck Racing that might help:

http://webpages.charter.net/beckracing/slvpg24.htm

[boscov6]

Thanks but that chart dosnt have a Federal Part # or a 3400 Gen 3 listed. I sent a question to the wot tech, maybe they can help.

[60dgrzbelow0]

Thanks but that chart dosnt have a Federal Part # or a 3400 Gen 3 listed. I sent a question to WOT-tech, maybe they can help.

Good Idea... Ben will know whats what... The reason I put that chart up was because it has additional information on the OEM Piston/Ring Part Numbers that you can use to cross reference at sites like RockAuto, Summit, etc. to discover more about the Federal components...

[gectek]

th H847CP is NOT flat top. it is the regular piston from fed mogul for stock replacement. it has the 27cc dish in it just like the stock piston. no valve reliefs just a dish.