PROCOMP HEADS ------ STICKY------

Can i get all the knowledgable guys to post there findings on these heads ...the good , the bad and the ugly so i can archive the info .........

so that we can reference this thread to all procomp questions

thank you
Nick

here are some pics of the CNC version which sell for 749.99 each

here are some more pics of the head ...these were CNC ed by another company

here is a good thread to read

http://www.fordmuscle.com/forums/all-ford-techboard/459975-procomp-460-heads.html

and another thread to read

http://www.460ford.com/forum/showthread.php?t=135112&highlight=procomp

Some will say those are really good ProComp heads, they are cut up in pieces!!

How much cost does CNC porting add to the cost?

Out of the box flow #'s would be good to compare. Also if there is any piece to piece variations.

Bill

Out of the box their flow numbers are terrible; the valve job is so crude that no matter how good the port, it has no airflow. It can be made to be decent. NOT a race head by any means.
It's a good casting to start with and go from there but, "as is" it's just a chunk of metal like a stock iron head, (except it's aluminum), which NEEDS major improvement.

It's lighter and looks nice though...!

billandlori wrote:Some will say those are really good ProComp heads, they are cut up in pieces!!

How much cost does CNC porting add to the cost?

Out of the box flow #'s would be good to compare. Also if there is any piece to piece variations.

Bill

Bill here is what they say the out of box flow #s are

Aluminum Cylinder Heads

Intake Runner 300cc
Exhaust Runner 100cc
Combustion Chamber 95cc

Aluminum Cylinder Heads Feature:

Hardened Seats
Bronze Valve Guides
High Grade Aluminum
Multi-Angle Seat Design
Available Complete or Bare
Available fully CNC Machined
Designed Performance Valve Springs
Advanced Port Design for Greater Flow

Flow Numbers

Intake Flow


Exhaust Flow

.100
.200
.300
.400
.500
.600
.700


59.8
115
172
243
302
322
330


.100
.200
.300
.400
.500
.600
.700


48
98
125
158
186
195
203

All Heads Priced Individually.

IMO they have their place, but overall I'd rather spend my hard earned money on something American and something of higher quality, better design and something that has better potential for the money spent.

Please verify the source and method of flow testing on those Bruno......

Procomp = clown shoes.................. It is what it is.

It seems that once you pay for the porting (CNC or hand) you could have bought better out of the box heads and have more room to grow.

I suppose you can make any thing work given enough time and money but sometimes it comes down to spending a dollar to save a dime.

Clown Shoes.....LOL

Bill

bruno wrote:

billandlori wrote:Some will say those are really good ProComp heads, they are cut up in pieces!!

How much cost does CNC porting add to the cost?

Out of the box flow #'s would be good to compare. Also if there is any piece to piece variations.

Bill

Bill here is what they say the out of box flow #s are

Aluminum Cylinder Heads

Intake Runner 300cc
Exhaust Runner 100cc
Combustion Chamber 95cc

Aluminum Cylinder Heads Feature:

Hardened Seats
Bronze Valve Guides
High Grade Aluminum
Multi-Angle Seat Design
Available Complete or Bare
Available fully CNC Machined
Designed Performance Valve Springs
Advanced Port Design for Greater Flow

Flow Numbers

Intake Flow


Exhaust Flow

.100
.200
.300
.400
.500
.600
.700


59.8
115
172
243
302
322
330


.100
.200
.300
.400
.500
.600
.700


48
98
125
158
186
195
203

All Heads Priced Individually.

Those flow numbers MAY be correct for a 300 cc port with a good valve job however, definately NOT "out of the box".
First of all, the intake runner without modification is about 270 cc's and max flow with a good valve job and an "out of the box" port is only anout 300 cfm on the intake side.

richter69 wrote:Procomp = clown shoes.................. It is what it is.

"WE" know Jon but the newbies/rookies dont ------- lets make a case in reguards to these heads not just bashing them !!!! ....... im not here to stick up for those china castings just lay out all the facts weather good (if any) or bad

thxs guys

Ok lets throw in that horrible chamber shape while your at it.

Bottom line is to make these a "race" type head wyou will have way more money in them than if you bought a good head like the SCJ, TFS street, Eddie etc.............. Then you port those and have something even better yet.

I know times are tough and money talks, but in this sport/hobby nothing is cheap.

From what I gather, if you have to go and do a bunch of porting to get them to work you would be money ahead using iron heads and follow the mad porter's instructions. Its not a cheap hobby but the iron heads would be more economical.

Bill

billandlori wrote:From what I gather, if you have to go and do a bunch of porting to get them to work you would be money ahead using iron heads and follow the mad porter's instructions. Its not a cheap hobby but the iron heads would be more economical.

Bill

IF you are going to port iron heads to the Mad Porter's recomendations, isn't that "doing the work yourself"...?
I don't know how many heads you have ported but, I'd certainly rather port on aluminum instead of cast iron , any day.

rmcomprandy wrote:

billandlori wrote:From what I gather, if you have to go and do a bunch of porting to get them to work you would be money ahead using iron heads and follow the mad porter's instructions. Its not a cheap hobby but the iron heads would be more economical.

Bill

IF you are going to port iron heads to the Mad Porter's recomendations, isn't that "doing the work yourself"...?
I don't know how many heads you have ported but, I'd certainly rather port on aluminum instead of cast iron , any day.

That is true!! Iron does take longer to port.

If you had to buy ProComps then pay for cnc or buy iron heads from Scotty with the porting done it would be more economical for the irons. If total cost/HP is the issue this would be the way to go. GOOD CNC porting ain't cheap.

Bill

I bought some because of the ebay ad that bruno posted as well as the flow numbers listed. the flow numbers where not as advertised (i don't have the out of the box flow sheet anymore, but the peak intake flow was around 260 cfm) the 'valve job' was such that the valves would not fully seat the valves and guides where so tight to each other that it was verry difficult to remove the valves from the heads. the intake valve spring pockets on one head where deeper on one head than the other. long story short. the heads are not ready to run out of the box. it cost me almost 1200 dollars to have them brought up to usable condition (i had the guides honed, the valve job re done and a mild port polish job) for what i spent between the "ready to run cnc procomps" and the work they required, i could have bought p51's and sevral cases of beer.

I have sold a lot of sets to be run on street engines however, I get those castings bare and hone the guides, install good valves with a good valve job and minor bowl port work.
I sell them for $1,195.00 a pair with the valves and NO spring seats, seals, springs, retainers, locks or studs & guideplates.
They flow about what a warmed-over, (not completely ported), bigger valve pair of D3's will do. I have dyno tested them "back to back" and seen no appreciable differences in power one way or the other; although the aluminum heads will accept a bit less octane fuel.
That the aluminum tends to not detonate as much at higher water temperatures is the major difference.

They are certainly NOT a race head but, do a decent job IF you use them where they have their place.

In my mind...

Easier to port than iron. Save some weight over stock heads. Cheap if you don't expect much out of them. Market will be flooded with them, so in a few years may become a viable swap-meet alternative to stock iron castings.

Things to consider are... Are the valve-seats going to fall out after some run time? Are you putting Americans out of work by purchasing them instead of a US product? Are you going to be embarrised when your buddy out runs you with his iron-headed BBC ?

.

One of the problems I see is these heads just plain don't work compaired to the tfs streets, p-51's scj's ect and they Throw in a fancy "shiney" cnc job and alot of people think that because they are cnc ported "the turd has been polished"......... Wake up!!! A bad design is a bad design!!! Doesn't matter how cheap it is or who made it!!!

D0VE C filled with brass 230 max cfm 1.75" valve
Procomp raised very much like the TFS street. 251 max. 1.76 tuliped exhaust valve.
D3 with no floor fill but a bunch of port work. TFS cutter on seats. 1.8" exhaust valve. 214 cfm max.
Decent flowing P-51 research prototype. 1.76" tuliped valve 250 max cfm. Later P-51's max out at 262 cfm.
Out of the box SCJ casting.
Iron cj with typical mid 80's exhaust port work tweeked by RHP

Heads were flowed with 2" primary header pipe 4" straight off of the flange with one 90 degree bend vs the crites #8 primary for the 67 galaxie which abruptly turns down off of the flange and has a 50 degree bend.

Dove straight / crites..... P/C straight / crites....D3 straight / crites... P-51 straight / crites.. SCJ straight / crites... Iron cj straight / crites

.200" 116 / 114..............115 / 113..................107 / 106..........116 / 115...........102 / 101.....................104 / 103
.300" 156 / 150..............160 / 151..................145 / 145..........151 / 147...........139 / 136.....................142 / 140
.400" 184 / 176..............198 / 187..................176 / 174..........178 / 174...........164 / 160.....................169 / 165
.500" 205 / 192..............226 / 207..................201 / 196..........204 / 200...........184 / 182.....................189 / 184
.600" 217 / 204..............238 / 218..................213 / 209..........227 / 219...........197 / 192.....................200 / 194
.700" 224 / 209..............245 / 223..................214 / 211..........238 / 230...........207 / 199.....................207 / 200
.800" 230 / 213..............251 / 226..................214 / 210..........250 / 239...........211 / 204.....................210 / 204



So looking at this, why is the procomp getting such a bad rap......they outflowed everything else tested.....am i missing something......this is from mad prters post on exhaust stuff.....just a copy and past....

Flow numbers are only a small part of it........to many are hung up on flow this and flow that, shine this and shiney that......... Its about how much power they make and how fast they go.... Not the flow!!!!!!!! They work only marginaly better (if that) than factory stuff!!! Flow means nothing if power isn't produced !!!

It appears we will have another "knowledgeable" guy to gather info from on these heads...

https://www.youtube.com/watch?v=UDfZGPqxs5g

Ohh Jon...

Tee hee hee