#243 casting heads
#2
TECH Apprentice
iTrader: (6)
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wow, that is a lot of money. ebay all day long for 300 bucks for 243/799 heads. I hope that they have the 02+ z06 valves in them. advanced induction will clean, mill, and do the valve job.
check them out www.advancedinduction.com
check them out www.advancedinduction.com
#6
TECH Senior Member
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so they do not directly contribute to HP, but their indirect contribution to HP is by allowing to spin higher ( HP = TQ x RPM / 5252 ).
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#8
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It won't be worth it if you're running the stock cam with an LS1 intake. But if you're rocking a FAST 102 with something like a TRex cam, a port job is definitely worth it. Those are just examples, but like most everything else, it depends on the setup.
#11
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243s flow marginally better at stock cam lift. You have to run a cam with higher lift and an intake that flows decent to get the benefits.
#13
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There better than 241s of course, but nothing amazing below .500, which is where the stock cam is. The point I was making is that theres no way to know if getting his heads ported is worth it unless we know what hes working with. Ported 243s really shine above .500 lift. If he's on the stock cam, he's not going to take full advantage of the $500 port job. And if he has an LS1 intake he's going to see even less benifits. Not saying it wont help, just might not be worth it unless he has a cam and intake that can use the extra flow.
#14
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before i put them on im getting my cam and all my parts together so i change everything at one. im goin to make sure i have all the right parts matched together before i go pieceing together the motor. befoer i put them on i'm goin to get a 3200 stall and 3.73 gears( or find a stock m6 rear end for a swap. my car does have the ls6 intake on it. ported tb and a fast 98mm lid is otw. anything yall think im missing?
#17
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If the budget is tight, you could probably skip the gears or put them off until last. I would suggest at least a 3600 rpm stall. Especially with a cam, the 3200 is probably going to be too tight. Not sure what power band you'll have, but the general rule of thumb is to get a TC that stalls 500 rpm shy of peak torque.