02WSSICK

iTrader: (8)

im trying to make decisions on cylinder heads for my new build, i'd like to keep the lsx block bore between 4.030 to 4.070, these are the 2 heads that im considering: tf235 and mast256 ls3:
by looking at the advertised flow numbers the tf flows way more on the exhaust throughout the mid-range all the way to .650 lift., on the intake there is not a huge difference.
i just dont see the need of spending additional 1.2k for the mast heads. both of the heads have .750 deck on them.
any inputs???

http://www.totalengineairflow.com/pr...gmhead/tfsls1/
http://www.mastmotorsports.com/2010/...sembled&id=362

Phil99vette

iTrader: (11)

Trick flows are flowed with a pipe on the exhaust which makes them flow more, both heads are very good pieces. What stroke crank are you going with?

02WSSICK

iTrader: (8)

lunati 4 in

yelo04goat

iTrader: (11)

in for info??

What about the AFR 245s? havent compared flow #s but i always hear good things about the 225 heads for sure

98Z28CobraKiller

iTrader: (17)

AFR makes a great piece but unfortunately, they aren't 6 bolt heads.

yelo04goat

iTrader: (11)

oooooo... i didnt even pick up on the 6 bolt part.... maybe the will start one day to keep in the game .

02WSSICK

iTrader: (8)

any ideas???

STAR

iTrader: (1)

Hot Rod magazine tested various ls heads on a 408ci motor and the Mast heads produced 1hp more The TFS heads did however have more average hp and tq, but overall both heads performed alsmost identically.
Given the price difference and being forced induction I would choose the TFS heads.

http://i67.photobucket.com/albums/h2...dtesting-1.jpg

http://ca.wrs.yahoo.com/_ylt=A0oG75A...est/index.html

02WSSICK

iTrader: (8)

thanks for the info!

lt1773

iTrader: (1)

just have a look into Eledrbrock 245 ls2 ported by WCCH