senicalj4579

iTrader: (41)

The latest plan was to get some PRC 5.3L stage 2.5 heads with a 228 cam. I was going to go this route because its a great DD capable setup and my tuner recomemded it on a budget.
Im wondering from you guys if I will be kicking myself down the road for not spending more on a set of heads?
I understand the prc cnc'd 5.3s are great and raise compression but am I rushing into this? Should I be going for some TFS 215s or something?
I also understand this might turn into a 5.3 vs 6.0 debate

1nasty86

iTrader: (63)

Prc 2.5 5.3 heads make decent power for cost vs. horsepower.. But if you have a ls1 id look into the tfs as cast ls1 220 and send them to brian tooley and let him work some magic and touch them up. An aftermarket casting head will take you further than a gm casting head.. BUT a AI/T.E.A. ported ls6 head would be hard to beat... If your on a budget tho just get the 2.5 5.3 heads... But they wont hold a candle to a ported ls6 head or a aftermarket casting head

senicalj4579

iTrader: (41)

How much more power would a cnc'd 243 make over PRC 5.3s?
The ls6 your talking about are 243s correct?

1nasty86

iTrader: (63)

Yes.. And id guess 10-20 hp

senicalj4579

iTrader: (41)

Iv actually read on here that the 5.3s would make more compression and the 243s would probably make only 10 more at most. But idk

Camaroking1996

Id say either get 220cc trick flows or get 243's and have them fully ported by AI

1nasty86

iTrader: (63)

Yeah man... This is just me but id have a T.E.A. ported head over a prc ported head any day..

Camaroking1996

What is the difference between a 317 and 243 head?

Killer5.3

iTrader: (1)

If you have any idea you may want an aftermarket head just wait and keep saving your $$ for them. The tfs is an excellent head , but, you need aftermarket rockers with them I think which is extra $$. If you want a similar flowing head the AFR would be a good choice and would only need a spring upgrade possibly depending on what cam you go with. I f you go with a stock ported casting you can get the LS6 CNC ported from TEA or TSP milled to get as much compression as you can get with 5.3 , but , have better flow.

wildcamaro

iTrader: (15)

Unless you are trying to make over 450 rwhp I would say got with the prc 2.5 5.3 heads...the way I look at is the xtrA $ you spend on trickflows heads and new rockers you could of bought prc 5.3 heads, cam, and an ls6 intake...but if $ isn't a problem get the trickflows or afrs for the most power potential...

Also 317 heads have a bigger combustion chamber which will lower compression ratio...people usually only run the 317s on nitrous or turbo/supercharged cars...good luck man

1nasty86

iTrader: (63)

Afr's use bronze valve guides just like trickflows... I have tfs 225's with powder metal valve guides which allow you to use stock rockers

sepsis

iTrader: (7)

Why would someone spend the money for a set of good heads like AFR of TFS and keep the stock rockers and not go with a good roller tip?

That's just half assing it imo.

1nasty86

iTrader: (63)

then this guy right here is half assing

02_Orange_D1SC

iTrader: (27)

i was goin to buy PRC 2.5 LS6 heads but changed my mind and went with a set of AI 226cc 243 heads and custom grind reason because of the power numbers the AI setups have been putting down. plus i hear there heads arnt what there cracked up to be you get what you pay for IMO.

sepsis

iTrader: (7)

I wasn't trying to put your **** down, I just can't see spending over $2,000+ on heads and slapping the stock rockers on there. Might as well spend an extra $400-500 and get a good set. It's just something I couldn't do just to save a few bucks. Not to mention is good for some extra HP.

01ssreda4

iTrader: (96)

TFS and AFR stuff is NICE. But when you are on a budget, you can never go wrong with A.I. ported stock stuff.

1nasty86

iTrader: (63)

ill see thursday how well the stock rockers perform on the 225's... but brian tooley said i shouldnt have any problems.. and what he says, usually goes

hammertime

iTrader: (1)

All roller rockers are heavier than stock rockers, but not as strong as the stock ones either. Stock rockers with a trunion upgrade are more than adequate. Setting everything up correctly and achieving the correct geometry are key to making the stockers work well with a big cam.

Lots of info in this forum if you search...

Johnnystock

iTrader: (6)

Budget n TFS doesnt sound good to me. Best budget heads are TSP 5.3, something top notch on a budget with stock casting are TEA or AI

vettenuts

iTrader: (4)

I agree. I would get a quote from them as well to compare. Their heads have been making some good power.