lilred1995vette

iTrader: (19)

Just seeing if the 235s will work on a iron 408? I saw on the site they said there for 6 bolt head blocks. Also how do they do on a stroker vs the cnc ls3s prc?

lilred1995vette

iTrader: (19)

nvm got my answer i was looking for.

njc.corp

well they have the option for the 6 bolt head to suit the lsx block-(they come out 4 bolt standard)

i dont know the valves sizes on the 235 cc tfs head-

what are they?

Thanks

Nick--

racer7088

I've done a few 408s with them that are near 600 RWHP.

2001 Pewter WS6

iTrader: (43)

Mine did 540rwhp on an engine that had half of the pistons in backwards and consuming massive amounts of oil... This was on an Iron Block 408. These heads work...

airforcemanss

iTrader: (23)

is this n/a. what do you see in the set ups that are bringing them close to the 600 mark besides the heads,is this common? is the exhaust and fast set up the deciding factor?

also, is it possible to run tfs235 on the 346 for awhile until you do the swap.i know it would be prob not be a good fit, but it must be better than stock heads for the time being. i would hate to throw on another 3gs on top of the engine swap for the heads alone.

2001 Pewter WS6

iTrader: (43)

also, is it possible to run tfs235 on the 346 for awhile until you do the swap.i know it would be prob not be a good fit, but it must be better than stock heads for the time being. i would hate to throw on another 3gs on top of the engine swap for the heads alone.[/quote]

346 is way too small for the 235 heads. 215's are better suited for that application. Or 225's for now if you are planning on running with the 346 for now then going bigger later.

knappbunch

let me know what all you put in there to make thqat kind of power. I am getting a 402 with those heads and pretty decent cam should be on the dyno today or tomorrow lokking forward to see what it will do. fast 92/92 also

airforcemanss

iTrader: (23)

thanks.id rather wait then. ill just have to take out a bigger personal loan i guess lol

racer7088

These are definitely bigger cam FAST 92 deals with good headers and everything obviously.

njc.corp

lets us know how u go

Thanks

Nick--

TJ

iTrader: (10)

where is the cam and compression in this mix? 230 240 250's?
are we talking 600whp in a 6 spd 10 bolt car with all dyno tricks?
curious how large a cam id have to go with to make mad power with a 11.5 static compression 408

99blancoSS

iTrader: (115)

He's talking a good set of heads and proper valverain setup. I know he has a soild roller 408 that put down over 600. The power is made in the heads and cam selection. Yes its a big cam as well.

lilred1995vette

iTrader: (19)

These heads require a 4.030 bore if you order them in an ls2 4 bolt setup, others are for lsx and ls7 only. But after research theres nothing but good about them.

99blancoSS

iTrader: (115)

4.300 bore? what heads are you looking at?

TJ

iTrader: (10)

im game with big.

njc.corp

u kidding right?

lilred1995vette

iTrader: (19)

unless you know of some LSX's with a 4.3 bore then obviously it was a typo! 4.030