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PROCOMP Heads
- Thread starter old377guy
- Start date
I heard no good, a mookoff from dart but the the maschining is no good. The Australian ones ( named PROTOPLINE ) are the good ones !
A lot of people confuse them !
Poor, poor quality. For what it takes to get a set into good, reliable working order you can buy a set of quality heads that won't have porous castings or thin decks, which you cant fix on the procomps.
They are crudely cast in a non-automated chinese plant. Core shift is very common, so wall thicknesses are a crapshoot. The machinework is pretty crude. And they don't flow as well as an 088 head with a decent valve/pocket job. I have heard more than one account of the seats falling out of them.
They are crudely cast in a non-automated chinese plant. Core shift is very common, so wall thicknesses are a crapshoot. The machinework is pretty crude. And they don't flow as well as an 088 head with a decent valve/pocket job. I have heard more than one account of the seats falling out of them.
Ratickle
Founding Member / Super Moderator
Called my number one technical engine guy. He said, you get what you pay for so be somewhat cautious. He has never had one crack in any street cars up to 650 HP or boats up to 500 HP. Above that, and in turbo apps, they have. They have a thinner deck, are lighter castings, and have a somewhat goofy port design that stops later porting improvements.
He recommends Dart Pro1 if it is a higher power application or any type of power adders.
(Or, if you want killer inches and power, he'll build you a pair of his billet ones with billet intake...
)
He recommends Dart Pro1 if it is a higher power application or any type of power adders.
(Or, if you want killer inches and power, he'll build you a pair of his billet ones with billet intake...
)
Rookie
New member
Have not heard many good things about them either. Poor castings, core shifts, and problems lining up intake without oblonging the holes some times.
I believe this is one of the better deals on heads out there.
http://www.offshoreonly.com/forums/swap-shop/257431-2-sets-alum-bbc-heads.html
I believe this is one of the better deals on heads out there.
http://www.offshoreonly.com/forums/swap-shop/257431-2-sets-alum-bbc-heads.html
kidapache
Charter Member
I use them befor not to bad 360 pro comp 125cc cnc ported on a per of 1000 hp blower motors no problemes yet goinig on 3 years we put are valves in them they were not to pricey for the guys price
old377guy
Charter Member
I appreciate the input
Underdog88
New member
I have 30 hrs on mine so far... so good. Bought from White Perf also. had inc ex valves installed by them. I took them apart after about 10hrs last winter and all looked ok.
I have the oval ports on mild 454s w/ebrocks. Runs mid 80s in a 30 Velocity at 51-5200rpm
I have the oval ports on mild 454s w/ebrocks. Runs mid 80s in a 30 Velocity at 51-5200rpm
