I have for sale a pair of hand-ported cylinder heads that came on an engine I acquired. They are center-bolt 853 castings. I'm afraid I don't have any flow numbers, but they did make 463rwhp through a stock LS1 intake manifold on a 346 with a cam similar to the GM grand-am cup cam (graph below).

Valves are REV 2.02/1.57
Springs are Comp 918 (PAC made)
Intake runners CC'd at 215cc
Chambers CC'd at 66.5cc

These heads are currently over at HK Racing Engines in Houston and got Erik's stamp of approval - they are good heads ready for installation!

sold

 

Would these bolt right on a 2000 C5 Corvette MN6?

 

Yes, they will bolt onto any LSx engine, although they are most suitable for stock displacement LS1s (346ci).

 

Still have them. . .

 

how will these work on a stock cammed ls1???

 

TTT Killer price

 

still for sale?

 

do you think these will outflow stock LS6 heads? also whats the max lift on those 918 springs?

 

how many miles on the heads/springs/valves? What was the engine used for that they came off of?

 

sold.