Sadly i did not measure the throat on these. I do not have scraps of hemi heads to play with. I have tried what your saying and lost my low lift numbers .5 and below. It picked up at .6 and up but not what i was looking for.
On another note, how do you go about telling a customer that what he just paid for from one of the most well known builders in the country is not up to your standards and im going to charge you more money
So I flowed these 6.1 heads that came my way just for my own curiosity. As they were with a Manley 2.1" valve from a well known CNC shop on a 4.06" bore @ 28"
.1 68.2
.2 124.5
.3 181.4
.4 231
.5 282
.55 298
.6 310
.7 317
Seeing this I measured the throat and it was really small somewhere around 86.5% or something. I took a 70 deg stone and went to town and bumped the throat to a more normal 90% AND..
.1 76
.2 142
.3 205
.4 231
.5 295
.55 307
.6 318
.65 326
.7 331
So now I tell the customer what they flowed before vs after and I wound up with the job to fix them. That's how I was able to upsell this time. It also explained the poor chassis dyno performance to a degree. J.Rob
