Viperhead for YS91SR?

[ZR2Chevy22]

Hey guy's and gals,

Does anyone know if the viperhead that works on the YS91ST4 will work on the new YS91SR? Or do they produce a seperate viperhead for the YS91SR? Your help is appreciated.

Andrew

[DavidH]

I doubt if OMI is producing a Viperhead for the SR. If the one for the YS 91 ST will fit, that will be the only one to use. If it is same bolt pattern, it should work. I don't think YS increased the diameter, I believe they just increased the stroke length.
The SR is a long stroke engine.

David