Reply to "What's a good used Fontana block worth?"

bosswrenchMember

Ford Racing used to sell a dry-sumped block with either steel main caps or 7075-aluminum, for the reasons you mentioned. My 5.3-l hot-rod Buick V-8 has 7075 main caps that I made for it. Aluminum Buicks are known for expanding the block side of the main bearings more than the (stock) iron caps and the resulting egg-shaped bores leads to loss of oil pressure and crank failure. So done right, your Fontana caps might be an improvement. They're likely also about 8 lbs lighter than steel caps.

6/16/1012:03 AM

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