I talked to the guy's at RPM and they said that they have heads CnC'd for 64cc 975.oo and 68 cc for 1080.00 WTF... who makes these heads cause I sure could have saved some $$$$$
Info on this site and Corvette forum:265cc port
Intake Flow (on 4.040 Bore)
.1 = 71
.2 = 164
.3 = 246
.4 = 301
.5 = 338
.6 = 364
.7 = 378

Exhaust Flow (on 4.040 Bore)
.1 = 56
.2 = 116
.3 = 178
.4 = 221
.5 = 240
.6 = 250
.7 = 256

 

PRC small bores flow more, with a 265 port.

 

I feel that, but look at this this engine build it is on this site. This is for a pair of bare heads Both: CnC'd for 64cc $975.oo and 68cc for $1080.00 now you tell me wich is better....$$$$$$$ I bought TFS heads bare for 1018ea. plus shipping ........ real S#@t, now to get both heads for less than 1000 dollars man be real unless you got money to throw away those heads would look good on my engine build for less money.. Million $$ question Who makes the heads and are are they really this good...?????
I know TFS AFR WCCH,,,,,etc ...... Look at it as we're looking at a pair of heads for the biggest Bang for the buck. and this looks Damn good for anyone looking to build a cheap, *** hauling 408...416 LSX..

Engine build: Look..... at the #'s

Quote:
TSP 402 short block 11.1:1
Eagle Crank/Rods/Diamond -15cc pistons/ARP everything
RPM small bore CNC LS7 heads. 60cc
RPM Ported LS7 Intake/ 96mm NW Throttle body
236-248 .648/651 114lsa
ARH 1 7/8 headers no cats.
powerbond ud pulley
diamond stage 2 clutch/ Light flywheel
ls7 rail/injectors
ls7 rockers trunion upgrade
Halltech air intake
Evans Water pump 536rwhp / 488rwtq

This is our first test on the 4.00 bore - clearly, we can cam this up some if we want to. In the meantime it drives beautifully, idles like a champ and has a great torque curve. If you bumped this motor to 11.7:1 it would have been kissing 550/500. Also this cam is very mild and we may end up putting something larger in and see what she does.

These heads are a amazing piece of work and a great option for us 4.0 bore and up guys.
You can see they make torque. They flowed 383cfm at .700 on my set of heads. Also my torque would have made 500 with a bit more compression. But due to the block having the -15cc dished piston we ended with just over 11:1 my fault for buying a used block. Was too good a deal to pass up. You will want to run a different cam with these heads then one cut for cathedral port heads.

These were some flow numbers from a prior set to mine.

Intake Flow (on 4.040 Bore)
.1 = 71
.2 = 164
.3 = 246
.4 = 301
.5 = 338
.6 = 364
.7 = 378

Exhaust Flow (on 4.040 Bore)
.1 = 56
.2 = 116
.3 = 178
.4 = 221
.5 = 240
.6 = 250
.7 = 256

Real S@#t. I like to save $$$$$$.

 

You are sure caught up in these flow numbers, aren't you?

 

in for info

 

You know this man!!!!! Look, for Both heads that are by ProComp Elec. you can get close to 550 rwhp. with a LS7 head set up for 4in bore. With my setup and I could pay Less than 1 grand and buy some good parts, ........ rocker arms, valves, springs and have a total of lets say 1700 to 1800 bucks and they flow good too, what more do you want ......How about you pay me for these TFS heads and I get the Small Bore and I get the Brian T. springs, hollow stem valves ,good rockers....etc and spend at the most 2 grand. Look at this guys set up.....My engine has more Comp. Lift & dur. and Vic Jr. intake.

 

Look at Hot Rod test of LS7 heads,The Pro Comp's, are the heads but for a 4 inch bore.
I have Damn near every LS engine build on computer & mag.... since 99.

 

Strong username to grammar correlation.

 

How you Been 87

 

Strong correlation to a guy with the same username on here that really knows what he is talking about.


I'm good lil one. Trying not to melt from all this heat and humidity

 

I'll be that way some time next month to do some work it is hot *** hell here to.. Last week to much Dos Equis... .. beer, I damn near died in San Antonio doing stone work...

 

Im aware of Lil john's motorsport solutions, he doesn't type like a retard though.

 

OUCH lol

 

LOL... This was funny. Good info also.

 

Thanks you all... But I try to keep up or find out as much as I can in the LSX world.. and try to inform the people with out any bull if I don't know, I go.....find out... Think? I bought Eagle 4in. crank and had the rod jour. ground down to HJ for Chevy Honda journal rod to get my stroke to the desired 4.175... old school trick or what, I'm just going to sit on it cost...total 900 bucks.. Man some the stuff or sh*t I buy is crazy... I don't focus well in the LSX world...I got a 408 had L92 heads since 08 and I went and got TFS heads.....This is my hobby so... to each is his own.

 

Quote: LOL

It's no small coincidence that Pro-Comp is named that. Peter, a Czeckoslovakian whom livesd in Australia, whom also owns Sydney Speed and Marine, in Sydney, also owns Pro-Comp. I understand from a few Austrailian and new Zealander people I know, Sydney Speed and Peter are to be avoided, so same with Pro-Comp.

His main reasoning with naming his knockoff businesses Pro-Comp, was with product name association. Pro- is used in both Pro-Comp...and...Pro-Form. If yoiu were looking for an item made by a company you only knew started with the word "Pro", you'd have a 50/50 cjance to hit either one. So...this gave Peter a 50 percent chance of getting people looking for much better Pro-form products to his less than good parts.

I was approaced by him, personally, to handle and use his parts, and I declined. I had heard of many unhappy experiences/dealings with both him personally, and his parts, from other hot rod builders I know in the industry. I had also seen some of this parts, and came away with less than a confident feeling about them.

I understand Peter will make a dealer out of just about anyone, just ask him and, bango, you are an instant dealer. So much for protected sellers. I think this is the reason we see so many Pro-Comp new products for sale on E-bay, just too many sellers who are getting the message, the parts are not what they are advertized to be, and anybody and everybody are dealers.

From what I am told, with Peter, it is all about two facts, putting other manufactureres out of business if possible, by flooding the market with low cost, poor quality knockoffs, and the bottom line profit margin.

 

I though it was /ea head. For both heads, thats a good deal for the price... but still paying a lot of money for questionable components.

 

Yeah it's 970 bare thru RPM for both heads, and 550 to 600 dollars ea. thru Poor Comp. But I will give Dr.J a call Tues. to find out more True - Real information about the heads themselves.... casting flaw's... etc....... and what problems are associated with this head ......
Got 24 pack of Dos Equis ... just walked in the house from cooking some Q... Read the Hot Rod mag (LS3 heads) and look at What Dr. J's heads done and realize what he could do to the LS7 265 cc port head. The intake runner was left to stock Poor Comp diameter. #'s were a hell of alot better I got the info ..... Pro Comp stock Ls3 Cnc heads @ .600,.650 & .700 = 350,358 & 350. Now Dr.J heads same port volume 279 cc runner # are: 357 374 & 359 and the result is a 12hp diff. and around a 4 to 5 hundred dollar diff from PC heads and a head that is cleaned up from DR. J's

 

I hope # 48 win"s tonight GM is the only Manufacturer who use's race car tech and puts them in production cars.... Ford D3 pushrod engine = to 5.4 supercharged engine and don't even talk about Toyota's attempt at doing a real HP engine that can be worked on. Thats the problem with auto's today you simply can't do work on them .....AKA.....DOHC! Nascar is a sham or is it a shame because not one of the car's tonight is stock! Back in the 70's you could look at a car on tV and say hell we gonna build the same engine as Cale try that Sh#* today and see if you can get a push rod engine from any dealer.

 

What if Peter or Poor Comp, had the Idea of doing a Canted valve head AKA: Mast or Edelbrock Lsx head layout for dirt cheap.....small intake runner so it would be streetable and set up for LS7....3... etc.... intake manifold. I think I or someone should sell this Idea $... May be cheap parts but lets see how it would do $.. Quote: Don't let yourself get attached to anything you are not willing to walk out on in thirty seconds flat.