I came across these heavily modified buick 350 heads with a quench zone created. The previous owner had some serious $ into the heads and then passed away before he could put them to use. I may just order some custom pistons and shoot for 13:1.
A head ported that works for Livernois Motorsports said the only way to get iron 350 heads to flow is to weld them up and reshape them, ports too.....
And who knows how much work they put into them. Not a quick operation someone spent some serious time and money.
You might want to get another billet crank to use that cam as well, that thing is HUGE and will want to spin some RPM!!! Nice score, my condolences to the deceased of coarse.
Yes it’s a pretty crazy set of heads. I’m pretty sure even with my 9.3:1 setup these heads would put it at about 11.5:1 compression. The head chamber cc are much smaller than stock. I may try the heads and cam on the good engine before I put the alum heads on. We will see. If money was no object then I would do another girdled block, billet crank etc. We will see, very interesting heads anyway.
You should buy my 350 short block and put these heads on it, that would make for one pretty nasty all iron SBB
That's a great idea! The compression ratio would probably be around 14:1 with those small closed chambered heads? That huge cam might even bleed off enough compression to be able to run E-85 @ 14:1?(would have to do the compression ratio math)
Opening up the chambers like that does 2 things! 1) it does not help air flow to any great extent! 2) it makes the spark plug act like its even more removed from the center of the chamber( where it should be ideally), and makes for a power reduction move of needing to add even more timing into the motor to make up for the slower burn time as rpm goes up! This a big big point , as if you look at modern wedged shaped chambers they are Heart shaped with the spark plug in a beak shaped nose area sticking out into the chamber as close to the center as it can get without choking off air flow much and also limiting lift due to valve to plug clearance. Once again this is another plus detail about Hemi type heads in that besides there added air flow due to unshrouded chambers they have 1 or 2 spark plugs right in the middle of the chamber. The original lip of the chamber on that side could have been put to much better use as a extension to the short turn / valve seat area when you know what your doing from making in depth flow study's and velocity plot's of how flow exits the chamber with different valve lifts! Remember this point, big air flow numbers are by no means a guarantee of greater power when the motor is running! If your going to cough up the bucks to get those heads flow tested be sure to pick a shop that can also test there level of port velocity, because if they test out at less then 280 ft per second at about .400 to .450" lift then the motor will be a Dog big time on a motor of only some 350 cid and less then 6000 rpm.
After looking at the pics again, my eyes didn't deceive me, the chambers are inconsistent in their shape
Velocity testing will be fine during flow testing. Interesting heads but likely not going to perform as well as my Gessler ported irons or the alum heads. Still neat to see a different approach to things.
.440 & .420 lift at lobe? TA's biggest cores only had .365 finished lobe when I got mine. Super duper roller core you have there...
