89Formulaws6

iTrader: (52)

i'm looking to get my cam for my l92 heads

i talked to jason over at TS today and he said 11:5:1 c/r would be good with his 248/256 on a 114+3 he didn't give me lift specs

but he told me to figure out my c/r and stuff and go from there

so what headgaskets should i use and how much should i mill the heads

i have a iron 408 with flat top diamonds with l92 valve reliefs

s346k

iTrader: (4)

the most i've seen L92 heads milled is 64 cc, but i don't know if tsp will go that far? at what point will we begin having intake fitment problems? website shows 67 cc as max. if you're using flat-top pistons you'll need to mill quite a bit from the L92s to achieve an 11.5:1 cr.

WKMCD

iTrader: (2)

Are your heads CNC'd? Did they reshape the combustion chamber thereby increase the size? Was a valve job done that moved the valves further into the seats?

Figure about .006 mill per cc but you need to know where you started.

89Formulaws6

iTrader: (52)

heads are just the stock castings

V8Rumble

iTrader: (9)

Should be about 68cc then... (Yes, I know that the word is that they're 70cc, but I recall that someone here on LS1Tech measured & found 'em to be 68cc...)

kistlerjm9

iTrader: (24)

need more info like stated above. how far are the pistons out of the hole? how big are the reliefs 2cc 4cc ect.