Small block TrickFlow heads part 1

ou812 said

I was really happy with our RHS and EQ heads that we sold...they made power, they last, you could bolt them on and go, and were priced well. But those are no more so...the TF head is a great head, and what I would run if given the choice between them and the iron heads most times...I think the iron head was a great performance head for the money, so less money for possibly less power was good for a lot of people...I bet I sold 400+ of those heads!

Click to expand...

I have a set your CNC RHS heads and they definitely work well.

Just for comparison sake, here is a table of the RHS and TF published flow numbers using slightly different tests;

RHS/Indy X heads IMM Engines CNC
Lift Intake Exhaust
.100 68 58
.200 142 119
.300 201 161
.400 249 184
.500 281 193
.550 290 195
.600 296
.650 293
.700 294

Test @ 28" on a 4.030 bore,
exhaust with 1 ¾” pipe


Trick Flow Power Port 190
Lift Intake Exhaust
.100" 66 54
.200" 134 121
.300" 200 181
.400" 248 213
.500" 281 231
.600" 293 237
.700" 301 240

Test @ 28" on a 4.000" bore;
exhaust with 1 7/8" pipe.

Sorry everything is jumbled together, the editor won't allow formatting with tabs for some reason. Tried to fix it, this is the best it'll do.