compression & valve clearance

[anthony rondeau <rondeau@xxxxxxxx>]

I have a 79 spider w/spica injection.  Its backfiring in the exhaust,
upshifting and downshifting. Would the T/A cause this?

These are my actual compression numbers:

here are the specs from test:       cyl#1 = 145 psi dry & 178 psi wet
                                    cyl#2 = 150 psi dry & 175 psi wet
                                    cyl#3 = 125 psi dry & 150 psi wet
                                    cyl#4 = 100 psi dry & 123 psi wet 

The throttle was open. 


I've inspected the valve clearance and this is what was
determined:
                        CYLINDER#      #1        #2      #3       #4   
                        INTAKE       .019      .012     .013     .008
                        EXHAUST      .015      .015     .016     .015

                What do these numbers mean to you?  What effect would
insufficient valve clearance cause?


                     Tony from CT.

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