Not Ranked
If you're wanting to really get some horsepower, it's my understanding that the earlier blocks are the beefiest.....60's and 70's vintage. Of course they have 2 piece seals.....
You're probably referring to the 90's blocks, right? Like in the Ford Lightning and Cobra R? I think they were vacuum cast as opposed to the older vintage blocks, which were sand cast. The bad side to vacuum cast blocks is that they are thinner in lots of areas.....
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