Finally purchased the MA 360 x heads from summit to place on my 360 and its a nice looking head. Went with bowl cleaning and gasket matching and installed a Lunati 60403 cam and lifters. Removes old 2658920 heads and found them to be totally ported with backcut stainless steel valves the bowl work was outstanding valves were stock size 360 in these heads. Replaced solid lifter cam which was a very rough idle cam. Got everything back together broke in the cam. Took car on a road test and was very impressed with those heads car has more torque down low and the cam pulls to 6000 maybe more but i stopped there. Cam i pulled was 268/274, Lift .488/.501 not very impressed with that cam could have been the heads holding it back. Now I have to get better tires left black marks 50 yards when i nailed it off the start. The RHS Heads seem to really flow was gonna go with the edelbrock but did not want to do a full rebuild to get the compression where i would need it for those heads.

 

Nice write up. Sounds like you really woke that motor up.

 

so did the new cam and lifters really help out or were they not really needed?

 

I changed the cam because I hate adjusting lifters all the time. When i took it apart I had 2 diffrent pushrod lengths. The other cam was really Just to big to put on the road and stoplight to stoplight was just a headache. I really think the cam with those heads is a real good combo my compression is only 9to1 and the car really pulls hard throught the RPM range.

 

I know this post is rather old, but if you still have your 920 heads would you want to sell them???