another 305 to 350
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Joined: May 2004
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Car: 84 trans am
Engine: 350
another 305 to 350
i have a 84 trans am with a 305 non-ho 5 speed. i put a 69 to79 350 block in to it and cant find a starter that will fit my fly wheel. its a 153 tooth 10.5 cluch. the block has off set bolts. any info would be help!
Supreme Member
Joined: Jul 1999
Posts: 18,457
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From: Loveland, OH, US
Car: 4
Engine: 6
Transmission: 5
You need to have the extra hole drilled in your block.
Since they didn't use that flwheel size back then on 350s, the bolt hole for it is not there.
Th reason they added the additional hole is pretty obvious: if you look at the starter drive shaft, and then look at the hole that is ther (for the bigger flywheel), you'll notice that a bolt that would go in that hole would also go RIGHT THROUGH THE MIDDLE of your starter drive. Therefore, there is no magic starter you can buy that will fix this problem; not a GM starter such as the LT1 one, not an aftermarket mini-starter, none. The shaft has to be in that location to mate with the smaller flywheel, and that bolt hole cannot be used as a result.
Don't believe anybody that tries to tell you otherwise. I have no doubt that it's isn't what you wanted to hear; but sometimes the truth is that way.
Take the block to your local machine shop and have them add the hole.
Since they didn't use that flwheel size back then on 350s, the bolt hole for it is not there.
Th reason they added the additional hole is pretty obvious: if you look at the starter drive shaft, and then look at the hole that is ther (for the bigger flywheel), you'll notice that a bolt that would go in that hole would also go RIGHT THROUGH THE MIDDLE of your starter drive. Therefore, there is no magic starter you can buy that will fix this problem; not a GM starter such as the LT1 one, not an aftermarket mini-starter, none. The shaft has to be in that location to mate with the smaller flywheel, and that bolt hole cannot be used as a result.
Don't believe anybody that tries to tell you otherwise. I have no doubt that it's isn't what you wanted to hear; but sometimes the truth is that way.
Take the block to your local machine shop and have them add the hole.
Supreme Member
Joined: Apr 2004
Posts: 3,067
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From: Staunton,illinois
Car: 1966 impala , 1998 sebring vert,1978 buick regal turbo, 1991 chevy silverado 3/4ton 4x4 lifted
Engine: 283, 2.5,3.8 turbo 350
Transmission: powerglide,auto overdrive, th350,4L80
just a quick question here but wouldnt it be a little easier just to pull the transmission and change flywheels to one that would work???
im just askin i dont know for sure myself ..???????
im just askin i dont know for sure myself ..???????
Supreme Member
Joined: Jul 1999
Posts: 18,457
Likes: 16
From: Loveland, OH, US
Car: 4
Engine: 6
Transmission: 5
I suppose you could; I do my own.
You'd need a jig to postively locate the hole in the right place, and perfectly perpendicular to the block; and you'd need to know the size of the entrance to the hole, which is larger than the hole, and is designed to creat a sort of "dowel pin" effect with the special feature that is made onto starter bolts.
You could use a starter nosepiece as the jig.
Of course, if you screw it up and get it in the wrong place or whatever, it's then a whole lot harder to fix.
You'd need a jig to postively locate the hole in the right place, and perfectly perpendicular to the block; and you'd need to know the size of the entrance to the hole, which is larger than the hole, and is designed to creat a sort of "dowel pin" effect with the special feature that is made onto starter bolts.
You could use a starter nosepiece as the jig.
Of course, if you screw it up and get it in the wrong place or whatever, it's then a whole lot harder to fix.
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