Re: cranking compression
 

Thanks for the reply, but what I was getting at is: well I guess less airflow means less fuel! I have had similar results before in the past.

Sorry not trying to hijack this thread but how much carb clearance should there be and where to measure from off the carb??

Re: cranking compression
 

Thanks Mike, I am going to put cam back and tighten lash after we are done racing. Do i think numbers are bogus? No. I have been with this man 13 years, and if he said we gained, we gained. Ran this weekend at Eddyville, went 5.90 116.70. Had the best mid track numbers of our car ever, but still down 3 mph and .007. I think it's as simple as you have stated, clutch cars do not like the cam advanced sometimes. Now, on the valve lash, i have seen .002 make a difference. As for the jets, we are using holley, but will change to max jets. We were no. 2 qualifier, at 2 under, Rick Parrot ripped everyones throat out at 32 under. So we have some work to do.