SB mopar Victor heads
What bore size did they use? The numbers go up noticeably with a larger (4.125) bore adapter and plate. My #'s are on a 4.030 bore and plate.
From what I can't tell they don't specify a bore size. it is mentioned that their bench is a
SAENZ model 680 flow bench.
Using a 4.030" bore adapter seems like a good choice for simulating a more typical "real world" rebuilt OEM block scenario compared to a 4.125 which sounds more like race block territory.
I find flow numbers quite interesting, These Victor heads look to be putting out some VERY nice numbers, considering how they stack up to your RHS heads, which are a proven product and impressive by any standard.
For a side by side comparison. two high performance heads. Tested @28" and 4.030 bore adapter. Tested on the same bench. Numbers taken from
WWW.IMMENGINES.COM
-------------- RHS ----- Victor
.100 --------- 69------- 70
.200 --------- 141 ----- 145
.300 -------- 197 ----- 221
.400 -------- 241 ----- 282
.500 -------- 267 ----- 310
.550 -------- 271 ----- ???
/600 --------- ??? ------ 330
I know it's not an ideal comparison since the RHS are nearly peaked just when the Victors are hitting their stride, but it shows some pretty amazing potential, especially strokers with cams spec'd north of .600" lift.
I'd personally love to see how this comparison would translate to a real world scenario. Since the flow difference is pretty huge from .300" onwards, I'd be interested to see how they would compare in something like a fairly mild 360ci mill with a .620"-.650" lift roller cam. starting with the RHS cylinder heads and dyno it as a baseline and then swapping the victor heads for a back to back comparison.
