Ted: thanks for letting us know about Bruce Young's recent medical issue.. I'm sure all of us familiar with Y-block magazine, wish him a speedy recouvery..
Interestingly, when I last renewed my subsription, I wondered how much longer he would continue the magazine?  I knew like a lot of us, he wasn't a spring chicken anymore, but I have no idea what age he is ?..


Paul

I’m sorry to hear about Bruce too. At 71, I’m seeing too much of that with my old friends.

One more thought on the cam. I’ve been “told”, meaning I don’t really know (a mistake I haven’t made yet?) that the aftermarket EFI units really like or need a higher vacuum signal at idle. Might be worth asking about that with the Holley unit before you pick the cam. Lone centers have an effect on that, along with other things, but I have a hard time getting my head around all the factors in a cam so I’ll leave that to someone more knowledgeable.

miker
55 bird, 32 cabrio F code
Kent, WA
Tucson, AZ

Sorry to hear about Bruce.  I know what getting older means, and I also understand spouse illnesses.  It seems our calendar is used more for Dr. appointments than anything else.  Prayers for a complete recovery for everyone at the Magazine.   Joe-JDC  

JDC

Joe.  Bruce Young had been hospitalized recently due to heart issues and while I haven’t heard otherwise, he should be out and recovering by now.  The next issue of YBM will undoubtedly be late as a result but there’s no doubt that he will take any articles that are sent to him so they can be put in future publications.  He does not get email at his home so I would not expect Bruce to be replying to emails in a timely manner right now.  I’ll give him a call tomorrow and see how he is doing.  Ted.

Lorena, Texas (South of Waco)

Without cutting a valve notch, you will hit the cylinder wall for sure with anything over 1.960" or so.  I tried a 2.000" valve on our 303 EMC Y with a camshaft with .600" lift at the retainer, and upon tear down, we had nicks in the notches on a couple of cylinders.  It takes a dedicated template to get those notches in the right place for iron heads and oversize valves above ~.535".  I would like to use offset dowels, one of the smaller chamber heads, and try to get the combustion chamber completely into the bore.  I believe a person could get close enough to help, even with a lesser flowing head.  I have a pair of 113 heads ready for the 303 EMC Y that flow 260 cfm in both upper and lower ports with 2.000" valves.  Now it looks like EMC/MOM is dead in the water.  Joe-JDC

JDC

I find about .550 lift is max I can fit into an engine with iron heads and a 2.02 valve , are you seeing the same?

If memory serves me, just over 230 cfm @ .500", and 246 cfm at .650f".  These heads were drilled for 1/2" head bolts many years ago for a race engine, and I had to be careful not to hit water with the port work.  Trying to salvage a block and heads which worked out decent in the end.  Ted and I took this engine from bare block to dyno test in two days.  Joe-JDC

JDC

Good job Joe, can I ask what flow you got out of those heads @.500 lift?

I just made over 400 hp with my 345 Y using the Isky 280-I-11 with 9.43:1 compression and DCR of 7.98.  My ported 113 heads, my ported BT intake, FPA headers, BG 930 Carb.  Fairly radical idle, but will idle down to 700 rpm.  I was planning on a Y Block Magazine article, but have not gotten a reply from either of the magazine's editors showing any interest in the build.  Joe-JDC

JDC

If sound is your primary objective, then the Cruise Night Special should be good for that.  If the rest of the engine and drivetrain is setup for it, it should be a good performer, too.  For street use, the bigger the cam gets, the more critical it is to address those issues as well.  Otherwise, you get the sound but with really sluggish performance and poor economy.  To me, it's good to have the sound, along with the performance to back it up.

One of the 280s might be ok.  The 270 will have a non stock sound, but probably not the attention getting sound you are after.


Lawrenceville, GA