Lardogg

What would be the better choice?

mattster03

iTrader: (22)

TF 220's. But they will be more expensive.

Camaroking1996

Are you talking about as cast or ported tfs 220's?

SIC GTO

Tfs 220 either way I'd go with them ported or not.

tillery

iTrader: (4)

They both are about the same price. Why not hold out to see the new PRC as cast 220s. They look really promising.

Lardogg

They are cast 220's. When are the prc 220's coming out?

mattster03

iTrader: (22)

they are the same price until you consider the different length push rods and after market rockers which are also required to use the heads.

Theblacknightls1

iTrader: (1)

Prc 5.3 2.5 are good also. With those heads my car had made 432 rwhp on a ls6 intake and maxing out my 26# inj.

scj

iTrader: (89)

I was contemplating this exact same thing a while back, and ended up getting a set of worked over tfs as cast 220's.
I ended up buying a slightly used set of ported ls2 style tfs 220's for a damn good deal. They already had port work, bigger ferrea valves, and the valve angle is 13.5* so it helps with ptv. I think the aftermarket casting is the way to go, and I'm glad I made the decision, as I feel I would have been dissapointed with the prcs in comparison to these tfs.

If I were to do it again, I'd say go big or go home. My next set of heads will probably be a set of mamofied AFRs.

scj

iTrader: (89)

I'm also interested to see what the prc as cast 220's have to offer once they're on the market. Im not playing the waiting game though.

Theblacknightls1

iTrader: (1)

What do you mean ,Go big or go home? Your Making it seem like the prc are stock ls6 heads.

scj

iTrader: (89)

The prc are stock casting 243/799 heads cnc ported/valve job. Etc. They're a pretty budget head when it comes to heads for our motors.

By no means am I bashing the prc heads, but they don't stack up when it comes to a set of mamofied AFRs.

Rise of the Phoenix

iTrader: (27)

They are stock castings, only ported. TFS 220's are aftermarket castings and the way to go if you ask me. There are many benefits to an aftermarket casting, plus, you can get a set of them for under $1,700.00.

tillery

iTrader: (4)

There is nothing wrong with properly ported factory castings. And aftermarket stuff can be run with factory valvetrain if the correct hardware is installed. As for push rods. They should be measured and replaced with the right length anytime heads,cam are changed. The main advantage your going to have is better PTV clearance. From personal experience the PRC 2.5 LS6 head is better than stock. But the TF220 is better than the other. But PRC has a 227 head and a new 220 head coming out that should be considered for best bang for the buck.

COPO9560

Have you looked at the MAST LS3 small bore heads? A lot more $$ than either of the heads you picked out but you can get an LS3 intake for a ton less than a FAST. Flow numbers are impressive - curious how they would do on a stock displacement LS1.

Rise of the Phoenix

iTrader: (27)

I agree the PRC 2.5 LS6 heads are better than stock, but their best, like you said, are the PRC 215 and PRC 227. I've seen some pretty impressive results on here from the PRC 215's. Now as far as the PRC 220 as cast heads, in a post by Texas Speed, they said the price will be more than the TFS 220 heads. In my opinion, I would go with the proven performer; TFS 220's. Now if the PRC 220's were priced less, then I may give them a shot. I still think Texas Speed should price these heads less than the TFS as cast heads, but that's just me.

Theblacknightls1

iTrader: (1)

I know this lol.. I had a pair on my car but I'm saying to say get afr go big or go home when those heads would make good numbers and good power as well just maters about the setup

TVWilkes

The PRC as cast heads are currently in the machining stage. In about 2 weeks, they will be a few sets installed on cars. If all goes well, production will start then.

Lardogg

I was just trying to get the best bang for the buck. Trying to keep on a $3000 budget for a head/cam build but every time I look for options the price goes up. I just don't want to buy ok heads and kick myself down the road. It's hard for me to spend $2400+ on premium heads. Maybe I should wait ad see what prc 220's will perform and price at. If they priced the prc's at the same or bellow the tf 220's cast and they performed better they would sell very well. I don't need the best out there. Just something that is worth the time and money.

TXZ28LS1

iTrader: (5)

Whats a trip is that i tried to find searches on cars in action on the street with TFS heads. All i ever seem to find is "Go with TFS", or its a vid of TFS on the dyno, or an all out drag car.

As much as we all say TFS, TFS i wanna see these heads in action on the street. I havent found any on this site.

With PRC you see lots of vids of these heads on cars running fast on the street. I would not hesitate to buy some PRC seeing some PRC 5.3 heads, 228 cam car smashing a 03-04 cobra. That says alot guys.