Rebuild Break In

[GregWeld]

Yeah --- I'll bet I've been to 30 "run in's" and more than that - dyno runs... chassis and motors... and it's always been the same -- do your absolute best to set timing etc BEFORE fire up -- fire 'em off -- check the timing and start wingin' 'em to the moon.... The rings these days are lapped in by the time they've got all the pistons installed.... the bearings are all coated with break in lube... you've got break in oil with the right zinc and blah blah... So it's really just the cam/lifter that needs to seat... and that gets lubed by splash - thus the RPM's...

BTW -- this is ANOTHER reason we all love ROLLER CAMS!

The last two motors I've done --- the LS2 in Ricks '55 and the blown stroker in Rudy's were both fire 'em up and they idle... and you've got all the time in the world to check stuff out without the raucous rpms. With the LS"x" motors --- there isn't even anything to check out!! OMG - just twist the key and drive away!

[Sieg]

The 383 short block will have a roller - trust me.

This was a fast-tracked tight budget and I liked the cam profile. Hopefully it's properely degreed or close to the original setting and I'll see a decent improvement from the new ignition, heads, intake, carb, and slightly larger headers...........hopefully!

If I do my homework right and get it all prepped to fire in the evening I can come home at lunch, light it up and quick set the timing at 10* and massage the throttle for 20 minutes. Ambient temps are in my favor and I have a commercial fan that pushes a lot of air I'll park in front of the radiator.

Any recommendation on Spark Plugs?

[GregWeld]

I like Champions personally --- here's AFR's recommendation for their 195 head. They don't build the 190 head anymore.




AC FR3LS or 41629