over 400cfm possible on l92 heads?
12-10-2011, 09:20 AM
#1
Teching In
Thread Starter
iTrader: (-1)
Join Date: Jul 2011
Location: Spring Tx
Posts: 37
Likes: 0
Received 0 Likes
on
0 Posts
over 400cfm possible on l92 heads? Hey guys, just moved down here from ia a couple months ago and was wondering about this? ive herd of cutting the intake valve down 2.120 and makes a big difference on the flow bench when testing on a 4in borestand, but does anybody have track times or dyno numbers? this is for a 4.-4.030 bore deal, i never got a chance to try it before i moved.does anybody have any (helpful) info on this? thanks again,Brian
12-10-2011, 10:14 AM
#4
Teching In
Thread Starter
iTrader: (-1)
Join Date: Jul 2011
Location: Spring Tx
Posts: 37
Likes: 0
Received 0 Likes
on
0 Posts
yeah, i understand this head is a good choice for 4.065 bore and bigger, just wondering if anybody has tried cutting the valve down to unshroud it for the 4in bore? 6.0? just seeing if anybody has tried it or is it a waste of time,lol. ive herd 400cfm, but havent seen it or herd if it translates into power.
12-11-2011, 10:04 AM
#6
Launching!
iTrader: (6)
Join Date: Nov 2010
Location: northern indiana
Posts: 272
Likes: 0
Received 0 Likes
on
0 Posts
there are people that cut down the intake valves,but as always depends on the application.
you could probably reach 400cfm with these heads,but port velocity would drop like a rock.quality of flow is a lot more important than quanity.flow #s alone don't tell you how good a particular head will perform.
you could probably reach 400cfm with these heads,but port velocity would drop like a rock.quality of flow is a lot more important than quanity.flow #s alone don't tell you how good a particular head will perform.
12-11-2011, 09:25 PM
#7
Teching In
Thread Starter
iTrader: (-1)
Join Date: Jul 2011
Location: Spring Tx
Posts: 37
Likes: 0
Received 0 Likes
on
0 Posts
nobody? i know there are some good head porters down here in the houston area, just wondering if its worth doing. 400cfm no big deal if it dont show up on the track.Head porters and engine builders please chime in guys, thanks again guys,Brian
Trending Topics
12-11-2011, 10:06 PM
#8
TECH Apprentice
iTrader: (10)
Join Date: May 2008
Location: Odessa, Texas
Posts: 331
Likes: 0
Received 0 Likes
on
0 Posts
I believe Greg Good has hit close to 410cfm on an all out LS3 head. It probably wouldn't be a good combination for a 4.00-4.030 bore setup though. People do commonly run cut down valves when running these heads on smaller bore motors though.
