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found a great valve combination
https://slantsix.org/forum/viewtopic.php?t=22042		 Page 1 of 1
Author:  72turboduster [ Tue Feb 27, 2007 4:03 pm ]
Post subject:  found a great valve combination
so i decided to run larger valves and me and my dad were searching for valves that were the right length and we found a set of early 289 ford intake and exhaust valves and they just so happened to be the right length so we installed new guides to compensate for the stem difference and now it's off to get the bowls hogged i will keep u guys posted. and will post pics as soon as i take a few shots
Author:  Dart270 [ Tue Feb 27, 2007 4:56 pm ]
Post subject: 
Good sleuthing. Using 289 valves is a common mod the racers do, and 283 chev valves also work (1.72/1.50) with the same guide size (11/32").

Lou
Author:  flatiron [ Wed Feb 28, 2007 5:39 am ]
Post subject: 
Using the 283 valves do you have to notch the bores are there any other mods required? Thanks
Author:  flatiron [ Wed Feb 28, 2007 5:57 am ]
Post subject: 
After I posted my last reply I grabbed my summit catalog and I don't see a 1.720 intake listed for a 283. But I do see a 1.5 exhaust.
Author:  Dart270 [ Wed Feb 28, 2007 11:46 am ]
Post subject: 
1.72s might be 305, but are SBC valves of some sort. Might not be in Summit's catalog, but they sell them. Ferrea makes nice ones.

1.50" exh valve requires bore notch on stock or +0.030" bore, but intake side does not.

Lou
Author:  cjh [ Fri Mar 02, 2007 4:38 am ]
Post subject: 
Quote:
1.72s might be 305, but are SBC valves of some sort. Might not be in Summit's catalog, but they sell them. Ferrea makes nice ones.

1.50" exh valve requires bore notch on stock or +0.030" bore, but intake side does not.

Lou
Years ago, about 1970/71, my dad used exhaust valves out of some Y block Ford V8. He said they fitted with nothing to worry about.
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