Quote:

What kind of power did you get away with with a stock block and the alum caps? 750 HP is the usual limit that is talked about. How did the bearings / cap interface surfaces look after being thrashed? To me the used hardware tells the real story.

I broke two stock blocks with my Indy head motor on nitrous. The third block had alum main caps and I never broke it. I would estimate the power at around 1200. Ran 8.40s at 3300lbs and saw the nitrous every pass it ever made.

Now, am I saying put alum caps on your stock block and it will be good for 1200hp...........HELL NO......LOL!!! What I AM saying is I broke two, put alum caps on and didn't break that one. Have also used them successfully on several other hot motors with none broke so far.

The fact that the dissimilar metals don't transfer was not my concern, nor what I was keeping an eye on. My goal was to stop knocking main webs out and breaking cranks when that happened. I accomplished that and the bearings always looked really good.

When I built the B-1 motor, I went to a Mega-block.

Monte