Please help fix

[goodej79]

Where should i start.. ha ha wish i could.

Sorry , well heres my problem > I have a 74 blazer with a 454 bored over .60
Last year i destroyed a bendix gear on a starter didnt hurt the flex plate so i replaced it . Didnt shim started fine twice then did same thing. But this time i had to replace flex plate and starter. so i did. Got it all back to gether and went to start and starter broke the bell and bendix gear so i went and got a newer gear redux and it started fine for a few - 10 times .
Let it sit for a while and i went to work on truck and it tryed to start and then all sudden grind , got underneath seen starter bolts bent .replaced
So a friend told me it might be way out of time having to much compression, i knew it was off some but didnt know how bad. well I put a timing light on and could not get base to stay right but could getr advance to 38. My buddy ear tuned and she ran good started good no problem for a week then again timing off no start just grind. now this time it broke 2 teeth off on flexplate. I dont know what to do please help , i cant replace a flex plate and starter ever time i want toi drive her
goodej79atyahoo

 

[BoondocK5]

I've never had this kind of issue, I always use the same starter/ block combo that I started with.

 

[GMC1977]

timing by ear is BAD!!! you could be off by alot of degrees of base timing. if you cant the base timing to stay the same then take the dizzy out and put it back in with #1 cylinder on TDC of the intake stroke and start over. and make sure the vaccum advance is disconnected when you have the light on it. if you still cant get it the advance weights in the dizzy might be wore out and you need a new dizzy

 

[goodej79]

truck

well we put it tdc before we tuned by ear and still no luck . if the timing is always off because of the distr would this cause a hard start and break flex plate

 

[goodej79]

help

I cant believe no one can help with this breaks my oil pumper

 

[COCHEV]

Hmm, lets back up a bit. when you install a new starter, are you checking the clearence between the starter gear and the flexplate??? are your starter bolts bent?

If you run a lot of advance, which it sounds like you have been, its hard as hell on starters. especially with hot starts. sounds like you need to address your timing issues. are you running a large cam? you can run the newer starters off the vortec 454s and they have more torque, but one good backfire on starting and you will crack the housing and bend some more starter bolts- and piss away a $175 starter...