Alloytec Cylinder Heads

[VX L67 Getrag]

Has anyone done any work with Alloytec Cylinder heads?

I have the 190Kw LY7 & put cams in it & thinking if I'm going to go that far I may as well put some bigger valves in & get the heads flowing better.

Has anyone done any work their & know if there's any gains to be had, I think the LY7 valves may be bigger than the LE0 already & not sure how much work can be done there?

Thanks for any advice or tips in advance!

[The1]

off hand one guy i know did cams, ported the heads and full custom exhaust and made 290 rwhp

[monaro308]

From what I can find, the LEO,LY7,LW2 valve size,lift etc are all identical.
The difference is duration

[Holden202T]

is that actualy cam shaft duration or variable cam tune differences ?

[delcowizzid]

cant add duration with variable cam its hardware regrind only or the cam would have to rock back and foward very fast LOL

[VX L67 Getrag]

I don't have much to compare with but when I ordered some valve for an LEO that I was repairing they had them listed as LEO valve only!

Obviously the cam's & cam timing is going to be different with extra solenoids to control them (but even the cam's could be the same A.F.A.I.K.).

[monaro308]

LE0
Valve Opens – Exhaust
−221 degrees BTDC

•Valve Opens – Intake
15 degrees ATDC

•Centerline – Exhaust
103 degrees ATDC

•Centerline – Intake
126 degrees ATDC

•Valve Closes – Exhaust
17 degrees ATDC

•Valve Closes – Intake
239 degrees ATDC

[monaro308]

LY7
Valve Opens – Exhaust
229 degrees BTDC

•Valve Opens – Intake
14 degrees ATDC

•Centerline – Exhaust
111 degrees ATDC

•Centerline – Intake
132 degrees ATDC

•Valve Closes – Exhaust
9 degrees ATDC

•Valve Closes – Intake
252 degrees ATDC

[monaro308]

LW2
Valve Opens – Exhaust
−221 degrees BTDC

•Valve Opens – Intake
15 degrees ATDC

•Centerline – Exhaust
103 degrees ATDC

•Centerline – Intake
126 degrees ATDC

•Valve Closes – Exhaust
17 degrees ATDC

•Valve Closes – Intake
239 degrees ATDC

[Holden202T]

bit of difference there