As i read more i see there are GMPP number Large Port Bow Tie Vortecs 225cc intake listed at 19331472 there is the 185cc intake model P/N 19331470.. lots of parts web sites advertise these heads with obsolete part numbers.


I am interested in both heads for my 408sbc running L31 vortecs now.
problem is i find very little conclusive information about these heads.. including combustion chamber size.
Jegs list 66 cc
Summit 67cc
others list other figures
pace performance list them at over $600 each and i read hot rod magazine write about vortec bowtie heads costing $700 all up..PER SET.


Then we see Alloy Fast burn heads from GMPP that cost the same as AFT,Brodix, etc.


where are these budget GMPP Bow Tie vortecs!! who sells them.


GM says these 220cc intake models are good for up to 400HP to 450HP!! but magazines say they will run over 7500rpm and can pull over 600HP as is. Am i reading about the same heads.


I am confused and GM should get there marketing happening.
Brodix or Dart CNC heads cost what pace are asking for 220cc Bow Tie heads.

 

Anything made by GMPP is expensive. The only budget vortec heads I know of are the 170cc that came off the L31 350.

Patriot AKA promaxx makes a 185cc vortec head with the same combustion chamber shape and intake port shape as the l31 head fairly cheap. Had a couple issues with mine, would probably buy bare next time and assemble my self.

https://www.summitracing.com/parts/pmx-2151