Correct Starter

[A1971Blazer]

The starter on this '70 K5 I just got sounds like the running gears of hell when I start it.......I shimmed it so far about 3/64 (.048) and it still sounds bad....

I'm wondering if it's the wrong starter...perhaps for a different tooth count flex plate...or just a junk, box store unit?

What is the correct flex plate for this motor...153T or 168T.......350/350turbo with staggered starter mount holes ?

[Mike C]

Staggered hole starters are for 168 tooth flexplate. Straight across the 153 tooth. Aftermarket starters sometimes are straight across and can be used for either flexplate size.

[A1971Blazer]

thanks for the info.........I did some searching and found a lot of good info on here regarding starters.....I'm gonna put it on the lift this afternoon and take a look at what's going on with it.

[A1971Blazer]

OK....I have a 168 tooth flex plate.....and a 9 tooth starter......that could be the issue? In doing a search, I found a post where someone had declared that the 168 tooth flex plate must use the 11 tooth starter....? I have one coming...we shall see.....