ws6guy27

iTrader: (31)

looking to possibly upgrade my head package. have cnc'd ls6 243's and iv read plent of articles on tfs 235s and what not. just curious what i could maybe sell the cnc'd 243s for to put money towards the better head. looking for best head for the buck. 203s, 215s, 235s, ect. just needing info. and what kind diff power gains.

Tainted

iTrader: (9)

The heads depend on your setup what would be ideal. What are you looking to gain?

ws6guy27

iTrader: (31)

just trying to have the best heads i can for my ls6 383. 11.5cr, 235/247@.050 and 620/624 lift 114 lsa. i hear u can gain anywehre from 20-60rwhp with a head change.

batboy

iTrader: (6)

For your bore size, you want Trick FLow CNC 215 or as cast 220.

Tainted

iTrader: (9)

Youre not gonna get anywhere near 60rwhp with any head swap for your case. 20 maybe 30 would be a more realistic idea of what you could gain.

Tfs 225 (pretty sure theres a small bore option) otherwise the 215s
Afr 210 or 230

ws6guy27

iTrader: (31)

so u guys dont think i need the 235's or whatever one is wanting to get but to expensive. reason im asking this is bc i see all these posts of better heads on built motors. since im already wanting to go to a fast 102 and nw 102tb and 42 lb injectors. might as well change heads to. maybe il see the 60 wrhp gain mark? maybe more? curious also the price of the 215s?? i do want cncd. its what i have now to cncd 243s. i like.

Tainted

iTrader: (9)

Youre not gonna gain 60whp from heads. If you had stock 241s or something yea maybe, but coming from a ported head already isnt gonna happen.

Check the 235s I think they have a minimum bore of 4.030

ws6guy27

iTrader: (31)

i seen anther post the 210-215s are for ls1/ls6, the 215 and bigger are for ls2 and the 235s are for ls3 and bigger.. for the bore applications. so that makes me think if i can only go to the 215s for the biggest. how much money would i be out of buying those and would it really make a diff from my cncd 243s? i know alot of questions but im stil learning the differences to the heads

Tainted

iTrader: (9)

I know the 235s will fit a 4.030 bore because I was looking at them, ls3 is 4.060 bore.

Anyway, look at a few of these options. Ballistic Speed has some ls3 heads with new valves etc for smaller bore applications, they may be worth looking into.
AFR 210 TFS 215 PRC 227

But you could potentially gain 20-30

MattKatz

iTrader: (5)

Im an Idiot....Had a brain Freeze....Carry on.

Tainted

iTrader: (9)

No, its 4.060

ws6guy27

iTrader: (31)

i dont have a ls3 guys. just a ls6 383. just needing help with pricing and what would be best bang for the buck kinda thing. money not really a issue. but im not going to just throw money away ya know

Tainted

iTrader: (9)

Youre going to get gains across the board. Look at the afr 210, tfs 215 they both will be very similar.

Also go to ballistic speeds website and look at those reworked ls3 heads. They had a dyno of a 383 that put down over 500rwhp with them.

Go look. Now!

ws6guy27

iTrader: (31)

i just seen a post a guy using 225s. and put down 537 holy ****. https://ls1tech.com/forums/dynamomet...leashed-2.html.. go look at this

Tainted

iTrader: (9)

As long as they fit your small bore. They may be 4.0+

ws6guy27

iTrader: (31)

that would be bad axx **** to hit those numbers. id be stoked and happy. he did have a fast intake and big mouth tb. so top end kit and heads look very interesting. just curious what 225s would run. or if anyones selling a set.

Tainted

iTrader: (9)

Well heres several things you need to take into account.

Most of these heads are bronze valve guides. You must use roller rockers or it voids your warranty. If you dont you will have premature valve guide wear. Now some do offer the option of powdered metal guides to run factory rockers. Factory rockers with the trunion upgrade are pretty damn good.

These heads start about $2300+

ws6guy27

iTrader: (31)

yeah iv heard the trunion upgrade is pretty legit. easy to replace urself also. and no small needle bearings in oil pan lol. i dont mind using roller rockers if i need to. if ima spend the money on good aftermarket heads i dont mind spending few extra bucks. and those heads this other guy was using was trick flows 225s. so how much u think i can get my ls6 cncd heads for? kinda help with the up grade..

Tainted

iTrader: (9)

If you buy roller rockers get a really good set. Theres a lot of failures by the cheaper ones. Jesel is nice but top dollar.

I think you could get about 1000 - 1200

ws6guy27

iTrader: (31)

never heard of that brand. what do they run? and im really getting excited about this new thread and reading about that other guys 383. maybe i can try to sell the heads,rockers intake n rails, tb, and injectors for .... give me estimated price if ya dont mind or if u may know someone. shoot me a message in my inbox. so the afr 225s? or the trick flow 225s? tisk tisk