I went as far as my bit was long. From my research you are not supposed to Siamese the intake end however they are now port matched to the intake. In the picture the one on the left is done and the one on the right has black sharpie on what is coming out.
Last edited by 91CCFirebird; June 2, 2013, 03:54 PM.
Any plans to extrude hone them. If your not familiar with that it is like a silver abrasive paste they pump thru what ever to open and smooth passages out.
I ask for AC/Delco... They always put Autolites on the counter.. Then being the smartass I can be I drag out AYE-CEE
Only time I go ahead is if I don't have time to make another stop..
Kid runs Split Fires on his derby motor.. They last maybe 2-3 derbys. When they get changed, no other changes, even I feel the difference in idle.. sometimes the end cylinders are in the way of the boots..
I've run Accels.. Seem ok.. But are a wallet flattener!
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