SOMbitch

iTrader: (8)

The time for my H/C swap is almost here and about all I have left to do is order the heads and cam I gonna search the Dyno section but wanted any guys here running these heads to give me their opinions. My tuner really likes these heads and thinks for the $$$ (about what a stage II LS6 head costs) they are a lot of bang for the buck. So......who out there is running these and what do guys think? Input from any tuners who have worked with these is welcome too!

SOMbitch

iTrader: (8)

ttt I know somebody out there is running these. I had no luck with the search in the dyno section either

c0ncEpT

iTrader: (4)

I have no personal experience but I know trmin8r made 490RWHP with those heads and an MS3

teke184

iTrader: (5)

honestly...not many guys are running these. seems odd that your tunner loves them so much if nobody seems to have them.

they are good flowing, small runner heads....so they'll make good power down low.

i say try em

SOMbitch

iTrader: (8)

Thanks for the replies guys. Tuner says the one set he has done made naerly 500rwhp but I don't know the rest of the setup was. I am having a hard time deciding cause the new Livenois LS6 flow really good low/mid lift and I really like them. I will talk to RPM in Garner again more about that setup before I decide what to do. They are within $200 of the LS6 heads so I'm kinda surprised more haven't tried them. I will keep everybody posted on what I decide and the results. Anybody else???

deeloc1

iTrader: (20)

FYI, i was literally one click away from ordering these heads but changed my mind when i found out how much of a mismatch the f.a.s.t. intake was to the intake ports on these heads. That's the only thing that turned me off. People have still made good power with these heads, ms3 and the f.a.s.t. though! Since then, i bought me some used 2000 mile AFR 205's for what i was gonna pay for the terminators and just got them freshined up and milled

Here's the link i was talking about...

https://ls1tech.com/forums/showthrea...tor+prc&page=3

Here's the pic...

regorih383

iTrader: (21)

Here is my list of mods and dyno numbers.:

Mods:
PRC 200cc Terminator heads 59cc
228/228 .579 .579 114LSA
SS Chrome long tubs and X pipe, cat-less 1 3/4
TSP under drive pulley
Harden 7.350 push rods
Cold air kit
Stock short block with 130k miles
Stock TB polished
Stock LS7 lifter
Stock LS6 intake
Stock 75mm mas air de-screened
Stock fuel system: pump, injectors, fuel rails
Stock water pump
Stock roller rockers
Stock LS6 oil pump
Stock LS2 timing chain
Stock A/C Delco 7mm wires
Stock 3.42 rear gears
NGK TR6 plugs for NOS
All belts-water pump, A/C compressor
Full exhauste no cut-outs, cat-less, Bassani cat-back

EDIT-
All gaskets were bought at a local Oreilly (heads gaskets were Fel-Pro, water pump, timing cover, valve covers, Knock sensor, temp sensor- I broke, and head bolts, YES the heads bolts are from Oreilly and cost like $35 dollars All these parts are over the counter nothing special about them.

Power 427rwhp 400rwtq<----G-FORCE nitrous tune! On 18'' wheels, pump 93.

Since then I added a Fast 90mm intake and LS2 90mm Tb. Yes, the intake does not line up to the heads intake runners but, I still pick up some power off the intake. As far as how much I picked up I dont know because I haven't re-dynoed the car, but it pulled a lot harder in the upper rpms. Let me know if you have any more questions.

regorih383

iTrader: (21)

you could do a search but you wont find much info on the terms ,the only threads you will find are the high hp number terms. I like to think my numbers are more realistic.

SOMbitch

iTrader: (8)

Thanks for the info man. I am going to be running almost the exact same setup with maybe a slightly bigger cam so this is great info. I would be very happy to put down those numbers Any chance you could post up your graph. I would love to see your torque curve. Thanks again!!!

regorih383

iTrader: (21)

ill post it later on today

Silver2000WS-6

iTrader: (1)

[QUOTE=regorih383;8907310]Here is my list of mods and dyno numbers.:

Mods:
PRC 200cc Terminator heads 59cc
228/228 .579 .579 114LSA
SS Chrome long tubs and X pipe, cat-less 1 3/4
TSP under drive pulley
Harden 7.350 push rods
Cold air kit
Stock short block with 130k miles
Stock TB polished
Stock LS7 lifter
Stock LS6 intake
Stock 75mm mas air de-screened
Stock fuel system: pump, injectors, fuel rails
Stock water pump
Stock roller rockers
Stock LS6 oil pump
Stock LS2 timing chain
Stock A/C Delco 7mm wires
Stock 3.42 rear gears
NGK TR6 plugs for NOS
All belts-water pump, A/C compressor
Full exhauste no cut-outs, cat-less, Bassani cat-back

EDIT-
All gaskets were bought at a local Oreilly (heads gaskets were Fel-Pro, water pump, timing cover, valve covers, Knock sensor, temp sensor- I broke, and head bolts, YES the heads bolts are from Oreilly and cost like $35 dollars All these parts are over the counter nothing special about them.

Power 427rwhp 400rwtq<----G-FORCE nitrous tune! On 18'' wheels, pump 93.

If you don't mind, I was wondering about much a h/c setup like this cost by the time you have bought everything? Thanks

SOMbitch

iTrader: (8)

Thanks!!!

Silver2000- Heads are $1850 at TSP,Cam $389, add another $250 or so if you need springs.

regorih383

iTrader: (21)

[QUOTE=Silver2000WS-6;8908825]
Around $3,000
and thats for everything:parts, gaskets, headers, x-pipe, intake, tb, lifters, push rods, pulley. Now if it was just for the H/C it would be: @ $1800-2000 and that would cover heads, cam, push rods, and all gaskets. Hope this helps.

99zman

iTrader: (23)

Then after his post not many more results ever showed up there after??? Why

regorih383

iTrader: (21)

you got me too

Silver2000WS-6

iTrader: (1)

Thanks guys

Jon@Texas-Speed

iTrader: (18)

These heads are very nice and consistenly make great power. It's hard to beat a head that is just under 200cc on the runner volume that still flows 300+ cfm. We have run these heads on cams of all sizes and they always product great power and torque. For a stock cube motor, they are probably one of the best heads on the market. As mentioned above, they just aren't as popular as some of the other PRC heads due to the added cost of an aftermarket casting. As mentioned above, a lot of people make a big deal about the port mis-match but the bottom line is, the heads flat out work. You can say what you want about air flow but the proof is in the numbers.

Check out the sponsor section and the website for sale pricing. The heads are now $1849.99 w/ PRC Platinum springs and cams are $379.99. Feel free to PM or call with any questions or concerns.

Jon Reynolds
Texas Speed & Performance

2000Hawk

iTrader: (5)

Not to hi-jack the thread, but Jon would these heads work well with the MS3? I know the MS3 is more of a top end cam, but can these heads help it retrieve a bit more power under the curve. With bolt ons and the MS3 cam (LS1 Intake as well) i put down 386rwhp and 367rwtrq, that was a full 40rwhp gain but only 7lb ft trq to the wheels. Can these heads give the MS3 the added air to perform better in the lower sections of the rpms, or do you recommend another set. Thanks
-Joel

teke184

iTrader: (5)

"Power 427rwhp 400rwtq<----G-FORCE nitrous tune!"


regorih383...

is that through a vette drivetrain??

if it is than you could probably expect a little higher through an Fbody setup...probably easily 10-15 more hp and tq.

also...how much is a nitrous tune holding back your numbers compared to a non-nitrous tune? i would think a resonable amount.



on the ports mis-matching...i've seen this discussed on several heads. but several companies...either AFR, TFS or FAST themselves did some research and found the affects of that are minimal. you can always port the intake to match...at least the sides, not so much the bottom lip (don't want to touch the heads).

lilbuddy1587

iTrader: (1)

I run them on my 384 stroker. Setup is in sig.

Car put down 471/440 because: Low timing, 110 degree heat, 91 octane gas and a fresh motor with 50+/- miles when it was dynoed. Also, it was dynoed with a fubar'd (HEAVY) LS7 clutch. So the car is capable, IMHO of 485/445


That was my post/my picture. I too was concerned with the port mis-match until after speaking with the port developer Casey S. and some other sponsers on the board. They all said it was a minimal loss at best and if it was that big of a deal to me, I could use some Splash green epoxy (not sure if thats the correct name) to build up the bottom of the intake runner to match the intake port. Now after seeing how much power my combo made with such shitty conditions, I'm a-ok with the heads.


I too was told by a few sponsers that the effects were minimal and if necessary, I could build up the fast runners with epoxy.