383 stroker dart platinum heads

[hadmtrst]

has any one built one with this flattop forged piston type combo preferably with good 6" rods forged crank for a weight pullin sled , mostly tryin to find a good piston to use in .040 over chevy mahle says theirs are around 800 bucks 21 degree valve angles for the 49cc dart platinum series head any input appreciated ,dyno nos. ,part nos. etc thanks HAD motorsports

[ProPower engines]

has any one built one with this flattop forged piston type combo preferably with good 6" rods forged crank for a weight pullin sled , mostly tryin to find a good piston to use in .040 over chevy mahle says theirs are around 800 bucks 21 degree valve angles for the 49cc dart platinum series head any input appreciated ,dyno nos. ,part nos. etc thanks HAD motorsports

Have built several 360 sprint engines using that same combo for class's that use iron heads. Yes the 21deg pistons are more money then the shelf power pak pistons but they do come with a decent .043 ring set.and lateral gas ports.

There is other options for pistons but they may be just the same end cost with the purchase of a good ring package to fit them. Total seal is the only place that sells a ring package that fits the Mahle piston correctly.
I ordered a set today and currently that are about $260 for the conventional ring pack. Add $130 for gapless top.

Have you tried Ross CP or Diamond for pistons. They offer pistons as well but I have no current cost from them other then Mahle

[bigfoot584]

Don't mean to hijack thread, quick question.
What type of V(2.02)/P clearance reduction would result if I run
23* pistons w/typical valve notches would dish help for clearance,
looking at building 383 SBC with same heads (got a pair very cheap),
not looking to run wildly lifted cam maybe .600 max intake, this
would not be a max effort build. There is no car for yet just clearing
off selves of some spare parts.

Thanks in advance.

[ProPower engines]

Don't mean to hijack thread, quick question.
What type of V(2.02)/P clearance reduction would result if I run
23* pistons w/typical valve notches would dish help for clearance,
looking at building 383 SBC with same heads (got a pair very cheap),
not looking to run wildly lifted cam maybe .600 max intake, this
would not be a max effort build. There is no car for yet just clearing
off selves of some spare parts.

Thanks in advance.

I have checked this several time with no luck but if you have pistons now the only thing you can do is check PTV clearance to confirm but theres a 99.9% chance there is not going to be any room for it.
A 21deg piston's VR is a long way off from a 23 deg piston

[bigfoot584]

Thank you from your previous post I thought you may have tried something
like that and or checked at least. That'll help

[SLPRACINGENGINES]

i use a ton of these head.i either use manley piston on 2 barrel motors ... and c/p or mahle on other motors.i keep most of it in stock and just cut the relief myself.but i do know that mahle has a good 21 degree piston.

[ProPower engines]

i use a ton of these head.i either use manley piston on 2 barrel motors ... and c/p or mahle on other motors.i keep most of it in stock and just cut the relief myself.but i do know that mahle has a good 21 degree piston.

Made made special pistons for the Dart 49cc head as well.
They are a 21deg head as I am sure you already know