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Joined in the hope that someone can tell me how thick 289/302 HiPo main caps are. Seen numerous web pages saying they are 'beefier and thicker' but that don't help when trying to work out if mine are or aren't!
Surely someone out there must know?

Many thanks


Ryan - UK
 

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289 and 289 HiPo main bearing caps are the same width where they meet the block. The standard caps taper to a narrower width where the heads of the bolts are. The HiPo caps do not taper- they are the same width at the bolt heads as they are at the block. Here is a photo of HiPo caps.
FWIW- the Mexican 302 blocks also have the full width caps.

Here is a photo of a single 289 cap and you can see the taper. 289 HiPo caps.JPG
 

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