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 Blocks / Cranks/ Rods and Pistons
 max bore on a 350
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profour
Tribal Scout

USA
16 Posts

Posted - 26 Jan 2016 :  10:27:36 PM  Show Profile  Reply with Quote
I was wondering if a 4.030 pistons I got for a 301 project would fit into a 350? I got a killer deal on a 400 and the seller tossed in the 350 for free. If I could I would rather stuff the 4.030 pistons in the 350. Just not sure how much its safe to overbore the 350.
Thanks

tjs44
Cochise

USA
411 Posts

Posted - 27 Jan 2016 :  09:21:26 AM  Show Profile  Reply with Quote
What about the pin location?Are the 301 and 350-400s the same compression height?Tom
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tjs44
Cochise

USA
411 Posts

Posted - 27 Jan 2016 :  09:23:51 AM  Show Profile  Reply with Quote
thats a .155 over bore as I figure.Dont think they were that thick.Tom
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profour
Tribal Scout

USA
16 Posts

Posted - 27 Jan 2016 :  12:30:08 PM  Show Profile  Reply with Quote
That's what I was wondering? If the cylinder wall was thick enough? That's a lot of meat to chew off a 350! Pin height is the same. Well I may just open up the 301 and stick the pistons in. I have mega hours reworking the little 301 heads, intake, and block. For no reason other than to do it! Lol!!
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tjs44
Cochise

USA
411 Posts

Posted - 27 Jan 2016 :  4:26:55 PM  Show Profile  Reply with Quote
Why not just build a 383 301 stroker with a set of #15 D port heads?
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profour
Tribal Scout

USA
16 Posts

Posted - 27 Jan 2016 :  9:30:19 PM  Show Profile  Reply with Quote
I was just screwing around with a 301. I also have 350's - 400's and a lonlely 403 from a pace car sitting in the corner of my garage. Its just i got a great deal on 8 custom made Ross pistons that some turkey bought, then couldn't finish paying for. And they happen to be for a 301n/a.

In some strong way the 301 kind of keeps my interest, I know all about the downfalls so save the preaching. I have found that with some old school buildup its really not that bad. Let's be honest it will never be bullet proof, but its so much liter than the traditional Pontiac, and it keeps so much weight of the nose! Just don't ask it to do more than its built to do and it will work fine. So i found with old school machine work, ( a lot of work within the intake and heads) it will flow OK, also big valves help, and debur everything! Again you got to go old school!
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