FX Holden Race Car Project

Post by **vlad01** » Tue Mar 07, 2017 12:02 pm

I tried to model a 202 a while back with these YT heads. Much digging I managed to find figures around 160 off CFM @ 500 thou @ 28" intake and about 130 for the exhaust. About the same as a stock vn-vr v6 heads.

I looked everywhere and I can't find that page I originally found.

Post by **Holden202T** » Tue Mar 07, 2017 10:14 pm

i'll let you know the figures when its been run on the dyno

v6bucket · Post by **v6bucket** » Wed Mar 08, 2017 8:29 pm

There nice looking head, just a pity they didn't produce them with a small chamber.

Post by **Holden202T** » Wed Mar 08, 2017 9:06 pm

yeah I think they make them to suit stock blue/black chamber size plus a larger one for boost.

v6bucket · Post by **v6bucket** » Thu Mar 09, 2017 8:45 pm

They make one with a 76cc chamber, which is probably fine if you are using forced induction and petrol.

Post by **Holden202T** » Fri Mar 10, 2017 12:59 am

yeah I got the 57cc one so I can get flat tops and 10.5 comp for boost and methanol

Post by **vlad01** » Fri Mar 10, 2017 1:39 am

you need 35cc ones I reckon.

Post by **Holden202T** » Fri Mar 10, 2017 5:55 am

36ccs on a 202 gives you about 13.5 comp, good for N/A but not boost!

Post by **vlad01** » Fri Mar 10, 2017 6:33 am

Nonsense!

Post by **Holden202T** » Fri Mar 10, 2017 7:35 am

Its a fact, thats what my n/a 202 had, you can accept it or not, thats your choice!

FX Holden Race Car Project

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