427 dart block

[EBruce]

Well it looks like 2 of the bolts that attach the dart block to the engine mounts have worked their way out Does anyone know what type of bolt I need to look for? Thanks in advance

[PLDRIVE]

Grade 8s and use blue loctite

Mark

[EBruce]

Thanks Mark, do you know length/diameter and thread?

[vref120]

I don't know the size or pitch, but I just used the stock mounts and bolts after some grinding to make room on the left side. One of the block drains hits the stock mount, so make sure it's ground down bought to sit flush. +1 on the blue stuff.

[EBruce]

Thanks for all the help. Pulled one of the remaining two out today. They are 7/16 1" and 14 thread.

[bobcowan]

IIRC, it's a 7/16" x 1.5 or 2.0" bolt.

But, there's 2 other bolts on the other side. Pull one of them out and measure it.

[DJPlaster58]

I had my engine out recently and found the left mount (driver side) interfered on the inside with the block keeping the mount from being securely fixed to the block. It was hanging up on one for the block plugs on the Dart Block. Someone attempted to grind it but they did not take enough material off the mount. I milled out a section of the inside of the mount so there is visible clearance. The mount now is fastened as should be on the block. I believe this could contribute to losing bolts or the appearance the bolts aren't tight.