lq4 heads, porting worth the $?
lq4 heads, porting worth the $? I just picked up a nice set of lq4 heads for my supercharger build up. They only have about 2-3K on them and look to be in great shape and are already cleaned up. Is it worth the extra cash to have them ported or should I just put some stronger springs on and bolt them up? I'm not looking to make huge power because I'm keeping my stock bottom end for now. I'm looking for around 550rwhp with a safe tune. I'm going to try using my f14 cam. I'm at around 410rwhp now and am looking at either a d1sc or ysi set-up with a fmic, no meth on pump gas. Do you think that sounds reasonable with the the lq4 heads untouched?
well if it makes you feel any better, ive read and just finished searching for alot of people using lq4/lq9 heads in their setups---going well over 600rwhp and in most cases untouched and/or just upgraded springs.
im going for the lq9's and just upgrading valve springs and if im bored enough and have some free time ill pull the lil dremel out and port away till my arms fall off lol either way they should produce NICE numbers for you...alot of people also leave them untouched with verry respectable #'s
im going for the lq9's and just upgrading valve springs and if im bored enough and have some free time ill pull the lil dremel out and port away till my arms fall off lol either way they should produce NICE numbers for you...alot of people also leave them untouched with verry respectable #'s
I'm having my LQ9's set up right now in Texas by a bud of mine. Just flowed 310cfm @ .580" lift and outrageous velocities. Not bad using a 2.02 valve. Deshrouding the chambers and what not, getting the heads ready to run high horsepower with much less boost.
Originally Posted by 67Firebird455
I'm having my LQ9's set up right now in Texas by a bud of mine. Just flowed 310cfm @ .580" lift and outrageous velocities. Not bad using a 2.02 valve. Deshrouding the chambers and what not, getting the heads ready to run high horsepower with much less boost.
Thanks for the help guys, I think I might just leave them be until I build up the bottom end.
I think the LQ9s will flow close to the 300 mark with very minimal work.. Hell I did a few sets where I did nothing but bowl blending, polishing the chambers and smoothing out the casting flashes inside the runners and got mine to flow in the 310's.. But with a cam as big as an F14, you want to keep your ports small and smooth, that cam will generate alot of air velocity with a smaller port and give you more low-end power..
Originally Posted by TchargedLS1TA
I think the LQ9s will flow close to the 300 mark with very minimal work.. Hell I did a few sets where I did nothing but bowl blending, polishing the chambers and smoothing out the casting flashes inside the runners and got mine to flow in the 310's.. But with a cam as big as an F14, you want to keep your ports small and smooth, that cam will generate alot of air velocity with a smaller port and give you more low-end power..
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I'll post some pics up in a few minutes... I'm worried about overall velocity and overall flow. My cam isn't giant (only .581 lift) so low-flow #'s make a difference in my application.
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Originally Posted by TchargedLS1TA
I think the LQ9s will flow close to the 300 mark with very minimal work.. Hell I did a few sets where I did nothing but bowl blending, polishing the chambers and smoothing out the casting flashes inside the runners and got mine to flow in the 310's.. But with a cam as big as an F14, you want to keep your ports small and smooth, that cam will generate alot of air velocity with a smaller port and give you more low-end power..
Nice website btw...
