My rear main seal started leaking so I pulled out my 17 year old 360 for a freshen up. New rings bearings gaskets and a cam shaft. Here is what I have
78 360 block .030 over
Balanced stock bottom end the crank and rods were turned .010
Speed pro 116 pistons set at close to zero deck height.( not 100% certain on that measurement)according to speed pro they make 9.2-10.0 depending on heads
The cam shaft is a Lunati .520/.520 [email protected] lift 106 lobe separation
The heads are ported and polished 2.02/1.60 j castings with a good valve job
Intake is a Holley strip dominator that is port matched with a 750 double pumper
Dougs headers recurved dizzy and electronic ignition
After tear down I found a cam lobe that was in bad shape which in turn chewed up a main bearing and I assume the cause of the rear main seal giving up. This combo was a ton of fun for a lot of years but I honestly have no idea what kinda power I’m really making. Any guesses? It’s in a 71 duster with an 8.75 with 3:55 and an over drive 4 speed. I haven’t ever put this thing on the track but any day of the week I can lay a spanking down on my buddies 12.20 chevelle on the street
