Pulling Forum - 4.5 inch bore 226, HELP!

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4.5 inch bore 226, HELP!

Printed From: Unofficial Allis
Category: Other Topics
Forum Name: Pulling Forum
Forum Description: Forum dedicated to Tractor and Garden Pulling
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=131320
Printed Date: 31 Oct 2025 at 12:25pm
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Topic: 4.5 inch bore 226, HELP!

Posted By: bigcountrykustoms
Subject: 4.5 inch bore 226, HELP!
Date Posted: 14 Nov 2016 at 8:20am

anybody ever had a 226 bored out to 4.5 inches? im having trouble finding pistons that fit with acceptable clearance.

Replies:

Posted By: Robacpuller
Date Posted: 14 Nov 2016 at 8:17pm

Probe Pistons.com. they have all different sizes.

Posted By: dgerth
Date Posted: 14 Nov 2016 at 8:23pm

Diamond pistons in Michigan. They can make whatever you desire @ reasonable $.

Posted By: bigcountrykustoms
Date Posted: 15 Nov 2016 at 10:25am

big help thanks guys

Posted By: CAL(KS)
Date Posted: 15 Nov 2016 at 10:27am

you can get BBC pistons from summitracing up to 4.625 bore

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Me -C,U,UC,WC,WD45,190XT,TL-12,145T,HD6G,HD16,HD20

Dad- WD, D17D, D19D, RT100A, 7020, 7080,7580, 2-8550's, 2-S77, HD15

Posted By: Shawn PA
Date Posted: 15 Nov 2016 at 11:10am

My 17 Is 4.6 bore.

Posted By: dawntreader74
Date Posted: 15 Nov 2016 at 11:53pm

i also used the big-block-gm pistons 427'