If I weren’t so foolish, I would do the same!Jmark said:Hmm, sitting here with my mouth zipped shut!!!! LOL
Not to mention 28mpg to boot.Rick WI said:Red, what in gods green earth is the current issue you have with the stock LS7 head that I know for a fact will run 12:1 on pump gas from Cleveland to Little Rock Arkensas in 95 degree heat and stop and go traffic AND makes well over 500 SAE corrected flywheel horsepower with about 27 degrees of total timing, with the AC running.
Grooves in this type of cylinder head will do no good. It is a superb head as is. Not a cylinder head you'd want to hack up.
Do yourself a HUGE favor one day and go to a car show and spend some time at the GM Performance Parts trailer and exhubit area. Many times they have their LS cylinder head engineers there. They are a wealth of knowledge and have always been willing to share information.
milleldai,leldai73 said:are the grooves just cut in with a swiss file? or is there some sort of
complicated tooling involved
Your combination is ideal for the modification for two reasons. The camshaftfoxman267 said:I don't mean to hi-jack but I'm considering doing this
to my 383 that has yet to be assembled. I have a set of 906 vortecs that
I will running on this engine. the compression will be right around 11:1. Now
Im thinking of a two groove setup with the grooves aimed at the spark plug
with the grooves making about a 60* angle to each other. This engine is
planned to be a mostly street engine I'm looking for a little cushion zone to
run pump gas without pulling tons of timing.
what are your thoughts?
oh and some specs
113 lobe separation
106 intake centerline
pistons are flattops