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Old 04-21-2006, 11:22 PM
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SBC Starter Bolt Pattern, Patterns?

How many starter bolt patterns are there for a SBC? I know there is a 2 bolt inline pattern and a staggered 2 bolt pattern and I have 3 threaded holes in my block. I have also heard about a 3 hole mount iron nose. Is this what the 3 holes are for? Or are the blocks with 3 holes capable of using either the 2 bolt inline mount OR the staggered mount both with 2 bolts?

I have a staggered mount starter on my SBC. I have put headers on this motor and bought a staggered pattern mini that is changeable to only 3 positions, none of which will work unless I want my positive terminal touching my header, that would be bad...... There are a lot more positions available with the inline mount type mini's. Will an inline work with this threaded hole in my block that looks like it never was used before? 63ChevyII.........Mike

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Old 04-21-2006, 11:41 PM
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sbc's are set up for either inline mount or staggered mount starters. you could switch to the inline mount easily if it would give you better clearance. the three bolt starters are for some manual transmissions, in which the starter bolts directly to the bellhousing, and not the block at all. hope that helps...
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Old 04-21-2006, 11:56 PM
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Quote:
Originally Posted by BossChevy62
the three bolt starters are for some manual transmissions, in which the starter bolts directly to the bellhousing, and not the block at all...

u are correct but also wrong, there is a 3 bolt starter that bolts to the block also. i know because i have one on my shelf in my garage, but NORMALLY chevy does use only 2 of the 3 bolt holes...joe
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Old 04-22-2006, 12:09 AM
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Quote:
Originally Posted by TooMany2count
u are correct but also wrong, there is a 3 bolt starter that bolts to the block also. i know because i have one on my shelf in my garage, but NORMALLY chevy does use only 2 of the 3 bolt holes...joe
hmm, I've never come across one of those, but now I know... thanks for the info
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Old 07-13-2010, 07:28 PM
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3 bolt starter

Quote:
Originally Posted by TooMany2count
u are correct but also wrong, there is a 3 bolt starter that bolts to the block also. i know because i have one on my shelf in my garage, but NORMALLY chevy does use only 2 of the 3 bolt holes...joe
what year is that? ive got the same one and im having trouble getting parts.
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Old 07-13-2010, 07:30 PM
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4-year old thread. so your engine is chevy?


Cole
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Old 07-13-2010, 11:15 PM
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Quote:
Originally Posted by scottnaidan
what year is that? ive got the same one and im having trouble getting parts.
Scott, would you be so kind as to show a photo of that starter, especially the nose?

Thanks.
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Old 07-15-2010, 02:45 PM
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the staggered holes are for 168 tooth flywheel(flexplate) straight across for 153 tooth.I think they make the mini strters to fit either
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Old 05-08-2011, 01:32 PM
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Quote:
Originally Posted by eloc431962
4-year old thread. so your engine is chevy?


Cole
I don't get your first sentence.

People always complain about lack of search function use, this guy obviously did but that's not good enough because the thread is old?

That's not helpful.

I have a question to others:

Could my 1957 283 be a 3 bolt engine mounted starter block and if so where to buy a starter? I've got a straight dual pattern mini starter with a 153 flywheel and it ain't lining up.
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Old 05-08-2011, 01:52 PM
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Quote:
Originally Posted by DQ81
I don't get your first sentence.

People always complain about lack of search function use, this guy obviously did but that's not good enough because the thread is old?

That's not helpful.

I have a question to others:....
Not only is the original post 4 years old, your rant is to posters from over 10 months ago, he was only making a point, relax. Searching answers is what the data base is for, replying to one is, well.....a stab in the dark.

Did you try the search function for your question addressed to "others"?
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Old 05-08-2011, 01:55 PM
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Quote:
Originally Posted by 68NovaSS
Not only is the original post 4 years old, your rant is to posters from over 10 months ago, he was only making a point, relax. Searching answers is what the data base is for, replying to one is, well.....a stab in the dark.

Did you try the search function for your question addressed to "others"?
I'm very relaxed.

Questions get asked because people commonly will not report the resolution of their problem, which in turn makes the search function less effective.

Yes I did search, but thanks for checking.
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Old 09-21-2012, 02:41 PM
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I hope this old forum is ok -- the name seems very appropriate and I can't think of a better new one.

I have two questions about sbc starter bolt patterns. I have a tyx 1975 350 truck engine that someone replaced a 6cyl with. The starter seemed slow so I investigated and found that the 3 bolt bell-housing starter was held in with only one bolt. The bolt hole in the housing at the top is intact but too big and not threaded. There seems to be enough room for a nut on the other side. The other boss is broken. What would happen if I drilled out the starter hole and used a bigger bolt and nut?

I have been thinking of getting a geared starter for various odd reasons -- it is a low compression engine. I don't have headers and will probably try to make a custom exhaust system in the distant future. I notice that pictures of these starters have two columns of bolt holes. I don't see where these would mount unless there is a flange at right angles to the crank on some engines. My engine has a flat horizontal surface above the starter and two holes and a small hole and a big hole. Does this mean my only other option is a starter with a top mount?
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Old 09-21-2012, 03:17 PM
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Quote:
Originally Posted by mwoolley View Post
I hope this old forum is ok -- the name seems very appropriate and I can't think of a better new one.

I have two questions about sbc starter bolt patterns. I have a tyx 1975 350 truck engine that someone replaced a 6cyl with. The starter seemed slow so I investigated and found that the 3 bolt bell-housing starter was held in with only one bolt. The bolt hole in the housing at the top is intact but too big and not threaded. There seems to be enough room for a nut on the other side. The other boss is broken. What would happen if I drilled out the starter hole and used a bigger bolt and nut?

I have been thinking of getting a geared starter for various odd reasons -- it is a low compression engine. I don't have headers and will probably try to make a custom exhaust system in the distant future. I notice that pictures of these starters have two columns of bolt holes. I don't see where these would mount unless there is a flange at right angles to the crank on some engines. My engine has a flat horizontal surface above the starter and two holes and a small hole and a big hole. Does this mean my only other option is a starter with a top mount?
Most starter motors nowadays acomadate al the different types of bolt holes chevy used though the years. So you have 4 holes to cover the diferent types.

I don't get if you have a v8 or a 6cyl? I don't know much about 6cyl starters..
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Old 09-21-2012, 08:43 PM
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Sorry, bad grammar. The truck appears to originally have had a 6 but someone put in the tyx 350.

I see now that I have been looking at the pictures wrong.
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