Today I really needed a stress break so I took the car for a short drive. Drove around a little while and warmed everything up good. Ran it up to about 7200 through 1st and 2nd. Felt something. Backed out heard the miss and clatter. So far I have pulled the rockers. One lash cap is MIA. Pushrod is bent but still in place. Running offset lifters on the intakes and the correct amount of threads on adjusting screws. No galling, adjuster is ok. Good wear pattern on other lash caps. Going to pull the valley cover in the morning to check the lifter. Failure was #1 intake, 440-1s, Harland Sharps, Cam is not real radical. 263/270at.050. .690-lift. #1 cylinder leakdown ok. Springs 230#seat. I am running a smith brothers .083 wall 3/8 pushrod. What should I look for? Is it a pushrod strength issue. I had 2500 miles on it before but always shifted at 6800, this is the first at 7200.