Thread: converter/cam selection

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Originally Posted by seansz28

i dont know what kind of cam to buy for my 454,and i am unsure what kind of stall converter i should get? keep in mind i dont have the money for racing parts or custom stuff.

30 over
-4 cc dish piston(speed pro coated)
781 heads (stock except for polish)
power plus cyclone manifold
holley 3310(proform main body)
th400 3.73's
78 camaro 3600lbs.
c/r 8:1
once i can afford it i will buy a centrifugal and run around 10 psi.
street driven
full length headers 1 3/4 primaries 3 in. collector

Another problem I noticed was your pistons.
Those pistons will not handle a blown application.

Originally Posted by erik erikson

Another problem I noticed was your pistons.
Those pistons will not handle a blown application.

Can you explain why? I called up the company when I bought my first set of pistons and they recommended these for my blower application. On the box they say they are meant for turbo/supercharger.

Originally Posted by seansz28

Can you explain why? I called up the company when I bought my first set of pistons and they recommended these for my blower application. On the box they say they are meant for turbo/supercharger.

If they are a forged piston then your fine.
If they are a hypereutectic then you are playing with fire at these boost levels you talked about.
About four years ago we ran them in one of our dirt circle track engines.
After the second night we pulled the engine down because we had lost compression in two holes.
We noticed the tops of these pistons had just broken away from the rest of the pistons right have the top ring land.
Keep in mind this was a flat tappet engine with a comp. ratio of 13.to 1.
I.M.O.,I would never run a hypereutectic piston in a blown or n20 application.