Ported GM LT4 Heads and Intake.
Ported GM LT4 Heads and Intake.
$1350 + shipping.
2.02" Intake 1.60" ex Manley Valves
5 angle vavle job
Comp 987 springs installed at 1.750" 138# at seat, 340# at .600"
----Intake Exhaust
.100-- 73-- 63
.200--140--117
.300--199--142
.400--242--168
.500--263--188
.600--277--197
These were flowed on a SF 110 4.030 bore, with no pipes, radius, etc.
I bought these heads off a member a while back. They were ported by Mickelson Machine in AZ, I guess the guy used to work for AZ speed and marine, before starting his own biz.
I recently tore em down, cleaned and inspected everything, and put them back together.
New valve seals, and decked the heads .010"
The intake has been opened up for 58mm TB and has a gasket match port job.
http://i22.photobucket.com/albums/b3...S/DSC02353.jpg
http://i22.photobucket.com/albums/b3...S/DSC02355.jpg
http://i22.photobucket.com/albums/b3...S/DSC02356.jpg
http://i22.photobucket.com/albums/b3...S/DSC02357.jpg
http://i22.photobucket.com/albums/b3...S/DSC02361.jpg
http://i22.photobucket.com/albums/b3...S/DSC02362.jpg
http://i22.photobucket.com/albums/b3...S/DSC02363.jpg
http://i22.photobucket.com/albums/b3...S/DSC02367.jpg
http://i22.photobucket.com/albums/b3...S/DSC02366.jpg
http://i22.photobucket.com/albums/b3...S/DSC02364.jpg
http://i22.photobucket.com/albums/b3...S/DSC02368.jpg
2.02" Intake 1.60" ex Manley Valves
5 angle vavle job
Comp 987 springs installed at 1.750" 138# at seat, 340# at .600"
----Intake Exhaust
.100-- 73-- 63
.200--140--117
.300--199--142
.400--242--168
.500--263--188
.600--277--197
These were flowed on a SF 110 4.030 bore, with no pipes, radius, etc.
I bought these heads off a member a while back. They were ported by Mickelson Machine in AZ, I guess the guy used to work for AZ speed and marine, before starting his own biz.
I recently tore em down, cleaned and inspected everything, and put them back together.
New valve seals, and decked the heads .010"
The intake has been opened up for 58mm TB and has a gasket match port job.
http://i22.photobucket.com/albums/b3...S/DSC02353.jpg
http://i22.photobucket.com/albums/b3...S/DSC02355.jpg
http://i22.photobucket.com/albums/b3...S/DSC02356.jpg
http://i22.photobucket.com/albums/b3...S/DSC02357.jpg
http://i22.photobucket.com/albums/b3...S/DSC02361.jpg
http://i22.photobucket.com/albums/b3...S/DSC02362.jpg
http://i22.photobucket.com/albums/b3...S/DSC02363.jpg
http://i22.photobucket.com/albums/b3...S/DSC02367.jpg
http://i22.photobucket.com/albums/b3...S/DSC02366.jpg
http://i22.photobucket.com/albums/b3...S/DSC02364.jpg
http://i22.photobucket.com/albums/b3...S/DSC02368.jpg
Last edited by TimbrSS; Nov 21, 2005 at 10:29 PM.
Re: Ported GM LT4 Heads and Intake.
I don't know what size they are... Probably close to whatever the average stage 2 gm heads come out to be. I could take them in and CC if someone really needed to know and was serious about buying.
I posted the flow numbers, what other numbers do you need?
I'm not sure how many miles are on them... Prolly less than 10k. No miles on them since i tore them down, inspected, cleaned and reassembled.
I posted the flow numbers, what other numbers do you need?
I'm not sure how many miles are on them... Prolly less than 10k. No miles on them since i tore them down, inspected, cleaned and reassembled.
Re: Ported GM LT4 Heads and Intake.
I never used these, but the guy i bought them off had them on a 383 with a cc306, went high 11's at 119. Low 400's for rwhp. Teflon seals. I'm not sure which manley valves they are.
Re: Ported GM LT4 Heads and Intake.
Interested in trades? Have a badass th350 setup I'm trying to unload with c02 shifter, tq arm mount and new tailshaft with speedo sensor. about $2800 in parts. I'll trade you straight across
Re: Ported GM LT4 Heads and Intake.
It appears as the intake side has been ported, but the exhaust side hasn't been touched. That doesn't make any sense. What good is good flowing intake, but poor flowing exhuast? Just an observation. Also, the intake porting is crooked, the intake and throttle body bores. Did you do it yourself?? Just curious.
Thanks
Cody
Thanks
Cody
Re: Ported GM LT4 Heads and Intake.
The exhaust is ported, it just isn't shiney cause it was bead blasted. I touched up the intake side with a sandpaper cartrdige afterwords.
The intake came that way from the person i bought it off of. It wouldn't take long to touch it up, but I've had more important things to do.
The intake came that way from the person i bought it off of. It wouldn't take long to touch it up, but I've had more important things to do.


