[bruneaur517]

So we found a crack between a top head bolt hole and water passage, other than that the late model has been great, I have a 66 289 block and another 5.0 block . which to use for 425hp bracket and why....I already use hydraulic short travel link bar lifters. This in an NA on e85 3 inch stroke 10.2 to 1 deal. I know about SHP blocks, I know about a Windsor, etc..... and I am willing to hear opinions and experiences thanks need help

 

[juiced coupe 78]

Pick one.

The only things I dislike about the 289 block is the slightly shorter cylinders (not a huge deal) and 2 piece seal. I hear that quality 2 piece seals are getting harder to come by.

 

[BBF612]

Have you thought about drilling and tapping through the middle of the crack and screw in a set screw with some green thread sealer on it?

If you use stock head bolts those cracks may not happen, the bolts give and not the block.

 

[03bluemule]

I heard that the 60's 289 Mexican block are stronger but hard to find.

 

[bruneaur517]

Pick one.

The only things I dislike about the 289 block is the slightly shorter cylinders (not a huge deal) and 2 piece seal. I hear that quality 2 piece seals are getting harder to come by.

Thanks for the reply and the info, I measured cylinder length, .070" difference on these 2 blocks, i thought i would have it converted to 1 piece rear main, depending on cost

 

[bruneaur517]

I heard that the 60's 289 Mexican block are stronger but hard to find.

found one in Calif. im in Tn so thats out.....thanks for the heads up

 

[Sumfuncomet]

I heard that the 60's 289 Mexican block are stronger but hard to find.

I have done the factory blocks for years, by the time they are magnafluxed, hot tanked etc you still end up with an rpm limited and power limited block. I started using Dart Iron Eagles and am currently using a Dart SHP on a build. It was 2300.00

 

[Briansshop]

Was the crack causing a prob?