devin.918

iTrader: (14)

Hey guys i have a set of 243 heads and im going to order my cam soon but im not sure how big.the 243s are stock as of now but im haveing a local guy port them and ill prolly just have them milled .010 or just resurfaced to clear a cam in the 230s duration and around .600 lift, do you think ill be safe without flycutting? also with 243s (stock) raise the comp over 853s (stock) thanks!

Sales1@Texas-speed

Its going to depend ultimately on what cam you do decide to go with and exactly how much the machine shop removes. The 243s do bump compression up because of the smaller chamber size compared to the 853s.

devin.918

iTrader: (14)

Ok thanks, I'm just asking what people have gotten away with just just light milling or resurfacing

Sales@Tick

iTrader: (3)

You could take them to 63.5cc's with a stock gasket maybe 63cc's and clear a cam similar to my 226/230 .60x/.60x 114+4 cam and maybe my 231/238 .61x/.61x 113+3 cam.

For your sake though at least measure to be 100% sure.

devin.918

iTrader: (14)

ok how much milling will bring them down to those cc's? whats the best way to check?

Sales@Tick

iTrader: (3)

.006" is the universal standard for 1cc.

devin.918

iTrader: (14)

ok so ive decided to just resurface the heads but now what head gasket should i use its a stock block with stock bore, ls1 should i just use a stock gm ls1 head gasket? Will i have denotation issues?

Sales@Tick

iTrader: (3)

Stock .051 head gasket is fine.