im building a 383 stroker bored .30 over with a 3.75 stroke. i want to run 6.000 h beam connecting rods properly clearenced.. for some resaon ive forgotten the equation used to determine the piston height. i know i need dual valve reliefs and flat tops.. i would appreciate any help.

im using a comp cams 230/236/112 Hydraullic roller

im still debating trickflow or AFR aluminum heads min 200 cfm
moroso pan
FIRST TPI intake
hooker LT
and a whole lot more goodies soon..

 

It's always best to speak with the piston manufacturer to see what they recommend for 6.00" H-Beams.
I would even bolt a head on with an old gasket and a layer of clay putty on top of the piston. Turn it over by hand and see if it hits, and/or measure how much clearance is really there.
Make sure the heads can handle the lift too.

 

most def..but i thought there was an equation...something like deck height from the bottom of the stroke plus width of the gasket and something else.. i just cant remember and something with .40 being a good number between the top of the piston and bottom of the head or valve.. damn i wish i could remember..thanks for the help though

 

http://www.kb-silvolite.com/calc.php?action=deck

Scroll down and they have calculators for just about everything.

 

I'm moving soon so all my books and mags are packed away..

How about this?

http://www.hotrod.com/howto/69883_st...ine/index.html

 

just a question but why 6.0 rods. they make no more power and put the pin into the oil control ring higher. i noticed they start to use oil sooner.

 

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Because they reduce side loading on the cylinder walls(angularity), especially with the 3.75" stroke. And they reduce piston speed...all equates into less heat, less wear, and a more reliable motor.

 

be careful of the piston because i see alot of problems with oil consumption over 20k miles or so(some worse than others). not all pistons are the same so watch out. the first problem i ran into was with a kb piston with the space between the first and second land. the oil control ring was in the pin area. i love a longer rod motor but i see problems on some 383 combos. i believe srp put the rings near the top but don't quote me. i build alot of performance STREET motors that run alot of miles.

 

so do you think a 5.7 would benefit me more in the long run with oil consumption....and still make the same power??what kind of piston would you advise?