86z89iroc

I have an 335 stroker with powerhouse rotating assembly and not sure what heads I should use. I have a set of 081's, 416's, and dart iron eagle ss 67cc 165 intake, 1.94 1.50 valves. I'm running a comp xe269hr-12 cam, and holley stealth ram with 24lb injectors. If the 081's or 416's are used they will need modified for cam correct?

NoEmissions84TA

iTrader: (1)

What pistons do you have? The compression ratios for those Powerhouse kits are based on 58cc cylinder heads. I used World Products S/R Torquers for the 305.

http://www.competitionproducts.com/W...uctinfo/4265B/

http://www.competitionproducts.com/W...uctinfo/4265K/

http://www.competitionproducts.com/W...ctinfo/4265KA/

86z89iroc

Kb 186 pistons. 30 over. It's been zero decked and powerhouse balanced rotating assembly

86z89iroc

Those world products heads are the one I wanted but I waited months on back order and said the heck with it and got the darts.

NoEmissions84TA

iTrader: (1)

Same pistons I have. With 58cc heads and a .040" head gasket, you will be really close to 10:1 compression. Cam choice is perfect. You do not want to go any bigger and there is no need for 1.6 rockers.

Fast355

iTrader: (2)

That cam is a little small in a 305, much less a 335 IMO. I ran a Crane 272H10 with 1.6:1 rockers in a 9.5:1 0.040" over 305 with 059 Vortecs on top. It had a GM 330 HP 350 HO intake manifold and a Q-Jet on top of it. 1 3/4" primary long tube headers with 3" collectors and a 2.5" dual exhaust with a X pipe in it. All this stuffed into a 1980 C10 long bed truck with a 2.73 rear gear and TH350 with a 2,800 rpm converter. The truck was QUICK, especially in the 3,000-6,500 rpm range. Same engine with a Victor Jr, custom plenum divider plate, and Edelbrock 500cfm carb backed to a Powerglide with a looser converter and 3.08 gears put a 1980 Corvette into the mid 12s @ 112 mph.

86z89iroc

So I should probably use the factory 416 heads to achieve 10:1 and just have the springs changed, studs pinned or put in screw in studs, and whatever else needs done to handle .495 I and .503 e lift? The darts I have wouldn't have to do anything other than bolt them on but with 67cc chambers I probably lose 1 whole point of compression?

NoEmissions84TA

iTrader: (1)

Read these links below:

https://www.thirdgen.org/forums/tech...-aerohead.html

https://www.thirdgen.org/forums/auto...onversion.html