Big Mopar main caps

Mike Taylor 3601 · 12-30-2015, 10:31 AM

We had customer years ago that had split several 440 blocks in the mains and wanted to girdle it.
We built a .625'' thick girdle,can have laser cut to your pattern and Blanchard ground,we made a set of steel caps that were tall enough that they were flush with oil pan rail,girdle attached w/oil pan bolts and several countersunk bolt around oil pan rail and main studs and had a hole in each main to pull caps with slide hammer and attach to mains also,if you make mains don't use expensive hard material,want a low grade steel it expands close to same rate as cast,but is way stronger,they ran this block many years.
Now days,unless you could do it yourself and like to piddle,I say buy a aftermarket block,that wasn't really a option back then.
Mike Taylor 3601

12-30-2015, 10:31 AM	#5
Mike Taylor 3601 VIP Member Join Date: Oct 2008 Location: Somerset,Ky Posts: 1,372 Likes: 354 Liked 307 Times in 103 Posts	Re: Big Mopar main caps We had customer years ago that had split several 440 blocks in the mains and wanted to girdle it. We built a .625'' thick girdle,can have laser cut to your pattern and Blanchard ground,we made a set of steel caps that were tall enough that they were flush with oil pan rail,girdle attached w/oil pan bolts and several countersunk bolt around oil pan rail and main studs and had a hole in each main to pull caps with slide hammer and attach to mains also,if you make mains don't use expensive hard material,want a low grade steel it expands close to same rate as cast,but is way stronger,they ran this block many years. Now days,unless you could do it yourself and like to piddle,I say buy a aftermarket block,that wasn't really a option back then. Mike Taylor 3601