davered00ss

iTrader: (4)

I am in the market for heads, and was planning on getting AFR's. Rather than saving for the AFR's, I was looking at possibly getting PP or PRC 243 casting heads to get them sooner. The PRC's would be $1,000 for the 243's w/ 918 springs. The PP are like $1,300. Any one with these heads have any input? Any thoughts on all 3 heads would be apreciated. I need to make a decision, or wait for the AFR's & know what I am getting.

Patrick G

iTrader: (14)

You'll hear varying opinions on how good the PP and PRC 243 heads are. Because they're so new, the results are a little sparse at the moment. What is a known fact though, is that EVERYBODY that bolts up AFR 205s makes solid power. But not just solid power, but outstanding low speed throttle response and increased fuel economy. Keep in mind, the stock 243 runner is in the 220cc range and once ported, it tends to fall in the 230-240cc range. That's OK if you plan on turning your motor 7000 rpm, but for the majority of racers, the increased mid-range torque from the high velocity runners of the 205s is worth the extra money. Face it, most people will spend well over the price difference of the budget heads vs. the AFRs just to gain the missing power and torque. Remember, flow numbers only tell part of the story. Airspeed and combustion chamber design have an equally high impact on power production.

cantdrv65

iTrader: (3)

The PRC LS6's are a great budget head....I went from 410rwhp to 432rwhp untuned through the Ls6 intake and a baby 228 cam, simply by bolting these on as purchased. They provide excellent bang for the buck. I just bought EFIlive and once I get the tune dialed in I'll be able to see what these heads can really do. Fuel economy is unchanged.

perdieu

iTrader: (1)

I just added the TSP heads and a Torquer v2 cam 436/402

-Joseph-

iTrader: (12)

PRC's LS6 Stage 1 (stock valves) and mods in my sig. did 430rwhp 400rwtq in my car. I plan on trying out a TSP MS3 camshaft and installing a pulley when I get some free time.

After installing the heads, I no longer have low-RPM cam-surge that is typical of big cam LS1 cars with 6-speeds. There was also an increase of power at cruise speed of 70mph as I no longer have to downshift into 5th gear to maintain constant speed up hills, while before the heads I would have to.

Not bad for a head that costs ~$900 outright.

PREDATOR-Z

The PP 243 with 918's are also under $1000 and they come with bolts and gaskets.
BTW, the CNC program on the PP's take the int. port to only 227cc, while the TSP opens it up to 237 cc
IMO it depends on the cam you're gonna use.
f you stick a big cam/high reving, go with the TSPs but if you do a cam till 228 duration or so, and in the .585 lift range then the PP will fit the bill nicely

As mentionned above, to this date the AFR 205 is a hard one to beat.

davered00ss

iTrader: (4)

Using the TR224 cam.

mike c.

iTrader: (1)

i had speed inc's budjet r.g.r st2 head. with that head and x2 cam + boltons i made 378hp stang dyno. i went to the x3 cam and AFR 205 heads i jumped to 426hp same dyno but in near 100deg heat. the x3 cam is only worth 8ish hp so the rest of the gain was all AFR's. before i ran 11.7's 118mph now 11.1's 124mph,my car is stock(ish)weight,the AFR heads are the way to go. a 85mm massair put me to 434hp and this year i'm adding the fast 90mm intake. goodluck to ya.

TNTramair

iTrader: (15)

Im also lookin at these heads as just a stock replacement for right now....do you have a set in stock ready to go??? how long before i get em if i ordered monday??? thanx

Tiger2o69

iTrader: (16)

I would go with the patriot heads.

Ryan02SS

iTrader: (3)

Wait for the AFR's. I wish I would have.

2000PewterZ28

PRC all the way.

-Joseph-

iTrader: (12)

Jason is who fills all the orders, so I will check with him later today if I see him and let you know. I know there have been a ton of them shipping out, so hopefully there isn't a long wait.

ReD_Z28

i have the LS6 stage 1 and i will go for AFR 225 fully ported with 422 later on, but for now the are the best for my setup with MS3. take it this way use them and you will sell them one day but you want lose money on them

davered00ss

iTrader: (4)

Ttt.

Rescue Ranger

iTrader: (10)

I went with PP ls6 s2 59cc heads.. bang for the buck it seems.. but I'm waiting on them so when I have them installed I'll make sure I post up my dyno

Doc

iTrader: (9)

I just completed H/C/I today with PRC Stage 1 LS6 Heads with 2.04/1.575 valves, dual springs, TSP 7.40" pushrods. Cam 228/228 .588/.588 114 LSA , LS6 intake. LS2 Timing chain, and Modified LS6 Oil Pump. Note the pic on the motor, you can see the Rocker bolt. On my stock 98 LS1 Heads the bolts are fully enclosed.

Nate_Taufer

iTrader: (1)

Stock 243 castings measure out at around 205 cc's. A PRC ported LS6 casting is said to measure only 215cc (I haven't measured a PRC ported LS6 head to verify though). The PRC ported Dart's are 237 cc's (can't remember who mentioned that in this thread) not the ported LS6 castings.

AFR's are a very tough head to beat for the quality and price though. But if looking for a budget head I suggest going with the PRC ported LS6 heads.

Nate

Abdullah

iTrader: (2)

if the money is no concern then i would go with non CNC'd completly hand ported AFR 205's as i did for my upcoming 402 LS2 or 415 L-92 ( not installed yet) with huge cam, the intake runner size is just below 210cc and flows 314cfm @ 0.600" and 327cfm @ 0.700". you can imagine what kind of power i can make with these small AFR 205's and a huge/high lift cam in a 402 LS2 or 415 L-92 motor.

i my self feel that PRC porting is better than Patriot's.

Redneck Z

iTrader: (3)

That's the 1st I've heard about a PRC measuring only 215cc. Maybe TSP can comment, but I've heard they are more like 237cc heads.