Any reason not to include the SR's? As far as money goes they might be cheaper when said and done. I see no advantage over the victor heads compared to the Indy SR's...NONE
Both can be made to flow similar numbers, the SR's use standard rocker arms, the Victors do not. The Victors might have some problems that would require extra work if they havent already re engineered them One being Poor rocker geometry when using a raised deck block.
If youi have used a newer World block you would see that pushrod clearance is a problem for sure. And these heads are known to have problem area's even with stock rb blocks... I couldnt imagine the trouble one would have with these using a 1.6 or 1.7 rocker arm and a World block. Which probably would work any how cause of the sucky installed height. This might not be a problem now, but you never know down the road you might want to use them on a RB, most of the after market blocks etc that are offered in large bores doesnt have a low deck version
Not as many options as rocker gear is concerned.
They have poor installed height. I was told to get 1.90+ was dang near impossible with these.
This presents a problem for me. Cause when I go roller with a engine, I dont fool around, and shoot for .800 lift+.
I think all these area's is why these heads arent very popular.
They should have offered some advantages over the Indy stuff instead of offering a inferior head.
Things like offering them in a 62-64 cc version, roomy installed heights etc might have helped there sells some.
I still think the stock block users building budget stroker engines in the 493-512 range really makes up a good size of the market now.
It would be nice to achieve 14-15:1 compression without cutting the crap out of the heads and just use a shelf flat top piston.