|
By crazy56f100 - 12 Years Ago
|
|
kinda new to the y scene, but like these old motors,i came across a set of g's and a set of 113's, trying to find out which set would be better to put money into?
|
|
By speedpro56 - 12 Years Ago
|
|
My vote is for the 113s because they flow alittle better than the Gs and all of the 113s are posted. The Gs have alittle more compression meaning 9.7 and the 113s 9.0, but the unshrouded intake on the 113s makes up the difference in power in my opinion and not all the Gs are posted.
|
|
By NoShortcuts - 12 Years Ago
|
I second Gary's reply! ALL of the 113s are posted AND there seems to be less valve shrouding on the intake. The combustion chamber size is so close that I see it as a non-issue compression wise. 
|
|
By mctim64 - 12 Years Ago
|
I've got 113s on the Model A, the Unibody and the dragster. They work very well! 
|
|
By skygazer - 12 Years Ago
|
|
I put 113 heads on my 292. After I had them milled .040", the chambers averaged out at ~67cc each. This yields 9.0 SCR (.040 over, zero decked). 1200 delightful miles on the motor. So far, no problems.
|
|
By crazy56f100 - 12 Years Ago
|
|
Thank you all for the info, i will look into the 113's little bit more to make sure they are all good, shooting for the 300hp mark, is that possible without using a 312 crank? i have a 9425-b that is opened up, the center divider is out and the plenum area is opened up,and the runners matched, also have a stock 9425-b, after the head change i am going to dyno run with both intakes to see what the power curve difference is.
|
|
By charliemccraney - 12 Years Ago
|
|
The 113s and B intake will be a good step toward the 300hp mark but you'll also need a good cam, exhaust, more compression, ignition tuning, carb tuning, maybe porting. More cubes definitely help, but no, a 312 crank is not a requirement.
|
|
By Ted - 12 Years Ago
|
|
Here are a couple et slips from my 337” Y using the 113 heads. I’m car #411E on the slips.  
|
|
By Ted - 12 Years Ago
|
|
For cylinder head comparisons, see if this link helps. http://forums.y-blocksforever.com/Topic61587.aspx
|
|
By crazy56f100 - 12 Years Ago
|
|
Thanks again for the help, and for the link, i will post my dyno runs when i get it set up.
|
|
By RB - 12 Years Ago
|
It will be tough to make 300 hp with unported heads and a B intake
I did some dyno testing a while back on a bone stock 292 short block. Started with all stock stuff and added headers intakes and carbs to see what happened to power output. About the best I could do with unported Gs was 275-280 horse
After the heads were ported, with a Blue Thunder intake and a 230 degree cam it made 325
|
|
By PF Arcand - 12 Years Ago
|
|
Unfortunately the original posting asking about the 113 heads, does not say anything about what he intends to do with them. I'd say it's a saw off versus the "G" heads if going with a relatively stock engine. Apparently the 113s have less valve shrouding & may breath a touch better, but the compression is lower. On the other hand, Ted's chart shows the "G"s have the best low end overall power of all the factory heads tested. Unfortunately, the only 113 heads tested, were ported & possibly milled slightly, so a direct point comparison can't be made. Other things to consider are, that early "G" heads are not posted which is important in some cases & I've heard that 113s are more prone to center exhaust area cracks than some other heads..
|
|
By crazy56f100 - 12 Years Ago
|
Thats the info i was looking for, i really want the 300 mark, my setup now is a isky rpm-300 cam,1.54 rockers, headers, msd and pertronix ignition,.060 over keith black pistons, and way to low compression 8.4-1 coae heads,
when the bank account is ready for it  , i plan to get the true roller adjustable timing set to degree the cam in right, the g set i have seems to be in better shape then the 113s so i will do some investigating, i am using a stock dizzy with mechanical advance,i have the vac unhooked, is it worth going with msd dizzy?
|
|
By crazy56f100 - 12 Years Ago
|
|
Thanks again for all the good info,i have a few guys that say the y is not worth the time and money, but i have towed more then one of the home after theirs left them stranded, it has survived me so i am sold
|
|
By speedpro56 - 12 Years Ago
|
|
Mummert posted the flow rates of the different heads a few years ago and the 113s outflowed the Gs by a small margin.
|
|
By Y block Billy - 12 Years Ago
|
|
LOL! Let them waste their breath, was just talking the other day about all the people who ran old Scrub 6 cylinders and such back in the day, looked up at all the Y's still running and wondered what happened to all those scrubs? don't see a one anywhere but the Y's are still tooting their original cars around.
|