jaber911

what the best heads for lq4 6.0L stock end
AFR 205's OR Stage 3 GTP ported 862

Stage 3 GTP ported 862 (4.8/5.3) castings
66 cc chamber
2.055/1.570

LIFT INT EXH
450 291 221
500 310 227
550 328 231
600 342 233
650 346 234
700 353 236

AFR 205's 66cc


thanks

STEEPSS

iTrader: (30)

What else is going to be on the car? You will have lower compression with the LQ4, due to the negative dish in the pistons. What are your plans for the car? What is your budget? If you're looking for help, give as much info as you can.

allngn_c5

iTrader: (3)

More info needed bro ............

jaber911

first thanks for all
i have lq4 stock (6.7 dish piston )
i wanna milled any best heads to 61 cc
with gm gasket 10.7:1 SCR 8.32 DCR compression
custom camshaft 221/233 . 610/ .617 113+2 lsa
the engine for daily use N/A


now what the best heads for me

thanks

99blancoSS

iTrader: (115)

AFR's hands down. I've got them on sale as well
Read the stickie, its not just about a flow number.

corvet786c

iTrader: (6)

I just bought AFR 205's last week now I am broke.But when you do a mod like this I believe you should do the Best. It will be worth it.

allngn_c5

iTrader: (3)

TFS 215's are a good option as well. Mill for compression and don't forget you need the Yella Terra UL's as well. Big hp from these heads. Can't go wrong with AFR 205's either.

james562

iTrader: (35)

I have a hard time believing anyone got those flow numbers out of factory 5.3 862 castings

My vote is if your gonna spend the money for AFRs you might as well grab a set of Trick Flow 215's or even the new PRC 215 head

LilJayV10

iTrader: (39)

Given I don't know a lot about LS engines....I know alot of people love the AFR heads, just like alot of people love the FAST intake. The price on both are high and I think there might be better options. Again I am just an internet racer with no real life experience with either.

I would rather have my stock heads ported by TEA or someone else that know what they are doing that buy a set of 205AFR's.

Let the flame begin.

allngn_c5

iTrader: (3)

Good luck getting your stock heads to flow like a set of afr 205's or tfs 215's without hogging them out. Even if they do flow better on paper, they will most likely be dogs on the street until you into your power band. (No lowend grunt) JMO

5.3LJimmy

iTrader: (10)

What are the cc's of the intake and exhaust ports on the GTP heads?