lt1773

iTrader: (1)

still nobody wants to post any dyno sheet for either of these heads !!!!

Sales@Tick

iTrader: (3)

I'm sure a simple search will give you the findings you're looking for

El_Diablo

iTrader: (9)

Since noone has asked yet, how thick is the deck on the PRC heads?

lt1773

iTrader: (1)

0.750" very good heads ,i just decided to order them , all sequar port heads are the best flow

LSOHOLIC

iTrader: (3)

Wow....what cars/class/titles do the PRC's hold ??
~Which you of your "shop" cars run the sb LS7's ?? Whats the basic combo and what does it run ??
~Who is responsible for PRC's port, seat and chamber work....aka, who's work did you digitize ?? Looking for a name....not a shop.
~Does TSP subscribe to the conventional "intake valve area to bore area" theory ??
~Are there seat and port options with the sb LS7 ?? To customize towards a specific build ??
~Have you guys crunched C/D numbers on an equal sized plate for a fair comparison ??
~And could you post some BMEP numbers with your sb LS7's ??

These are some of the basic questions I've always had for the PRC crowd.....they are not meant to be an attack....they are legitimate questions.



Thanks...............

c5z16z

lets see a dyno graph with these heads why are they better than TFS 235s ,,, who runs these PRCs on their cars,,,

Jimbo1367

DietCoke has a dyno thread w/TSP LS3 427 SB LS7's but thats a race car. I would like to see a more "typical" setup. Stroker and/or non. JMO

gouldy

It's been about two weeks since I questioned these claims and asked for proof to back it up and a number of others have also asked similar question but still no reply. Maybe there is just no proof available to back up these claims?

lt1773

iTrader: (1)

Thats why i ended up buying PRC LS7 small bore heads Req port instead of old design TFS lol.

Also if you use the logic when you say i want aftermarket heads they immediatly would say go ahead with Mast (black label heads) also the fastest car would run either All pr /Mozez heads so not cathedral port

gouldy

Good to see you have made a choice , I hope you get good results with them.
Post some dyno results when it's finished.

I can't understand how you could not find any results for the TFS245 though?,I have just done a google search and found 19 Pages of results and on closer inspection you will find some extremely good results that have been duplicated time and time again on many different engine combinations.

Good luck

v8pwr

iTrader: (19)

I think the PRC head could be a good option but you should pick what would be best for your application. Since this is meant for a turbo build the TFS is the better choice. This detail seems to have been overlooked in this discussion. Had this been an NA build I think the PRC would have done well. I wanted the PRC but they were unavailable when I wanted to buy.

Jimbo1367

I know I am beating a dead horse.... but PRC should get a magazine to run a article about their LS3 418 stroker w/sbLS7 heads. Between no available dyno data and availability of heads....... I believe TSP is loosing out on sales. But whatever. Its not my company. LOL

Sales@Tick

iTrader: (3)

You do know he was talking about the PRC heads not having data and not the TFS heads?

Just because it's an old design means nothing.

It's funny you say fastest cars don't run cathedral port heads...Justin Smith had a set of 250 Drag Port All-Pro Cathedral port heads on his nitrous car for the longest time until he stepped up to the LS7 port. He went 5.0x in the 1/8th mile with those heads spraying less than he does now on the LS7 heads. I'd say for a 250cc head that's damn impressive.

gouldy

I think you may be beating a dead horse, it also appears that Matt has no intentions responding to questions about his negative claims about the TFS heads. He obviously can't / won't produce any dyno figures to back up his claims that TFS245s will not hang with the PRC small bore LS7 heads and that's ok but his silence makes him look unprofessional and unfortunatly makes his product stand out from the crowd for different reasons. (great product if you don't care about proven dyno or track results).

LSOHOLIC

iTrader: (3)

LOL........TSP makes great products but don't run down the top competition in your class with ZERO ammunition. Show a little respect for the guys who paved the way.

For all you guys at the LSX race this weekend....make a note of all the PRC headed combo's running in the top five of their respective class. Then do the same with TFS heads.....and let the "real" results speak for themselves.

Hell I was at the drag week opener today....guess what, the famous white, twin turbo LSX pinto runs a TFS 225.....5oh's on 20 psi and he will cruise it 1200 miles in the process.

Thanks...........

Sales@Tick

iTrader: (3)

That's one bad mama jama!!! That thing is insane!

6D9 Matt

Ugh yeah Im searching now... hoping to pick up a shortblock in the winter and Im wanting a set of TFS 245's.

Got some pretty good prices over there, Martin?

Sales@Tick

iTrader: (3)

We can get you fixed up!

Roger Blackmore

Good thread.

lt1773

iTrader: (1)

any more input ??