[David Jones]

I had my 6th procedure (a scope this time and I'm told the last needed.....) 6-8 weeks ago on my right shoulder, in celebration, I decided I'd do a ball hone rebuild on my 400 and put it back in the GTO. The 400 currently has a 220/224 Comp hyd roller cam in it, but after pulling the heads I believe that cam was on it's way out due to a very small bad spot on that one lifter roller. When I put the 400 together I went with the 220/224 (110 lsa) because the GTO was an auto. All these years later its now a manual and I'd like to put a little more cam in it. I was thinking 230/236. The 455 I'll be taking out has a 230/236 (110 lsa) Comp in it, currently set up as a "hybrid" with Crower hippo solid roller lifters. Besides the manual trans (TKO600) the car now has a 3.73 rear.



I could simply swap the 455's 230/236 and solid roller lifters into the 400.

I could use the 455's cam and use the set of Comp hyd roller lifters I have in the cabinet.

I could buy a new cam and use the hyd roller lifters I have in the cabinet.


Vacuum isn't really a problem, I have hydroboost brakes and the hideaway doors don't seem to care. I'm not looking for a lot of rpm, the bottom end (rods/crank) is mostly factory. I will replace the bearings/oil pump while I'm in there. The pistons are thirty over TRW's, so compression is 9.5ish to one. The heads are 48's that Pontiac Dude refurbed/cleaned up/lightly ported for me about 10-15 years ago. They are on the workbench now and I'm cleaning the little bit of crud off of the intake valves and generally getting them ready before I look further into the shortblock.



This will be a months long process and I hope my metal/plastic shoulder and my jack stands on the basement floor work environment won't hinder me too much.


Thoughts?