Who is using one of their ESP 4340 cranks? Has anyone had any problems with them or the quality?

I used one in my 383 S-10, no problems what so ever.

I am looking at one of their lightweight versions.

We had to stop using the Eagle cranks as the last one I bought was bad and it took 4 cranks to get a good one. And we have found the Scat steel cranks to be far better in quality and in price.

I never had any 1st hand dealins with the Eagle cranks, but 2 of my buddies have. You couldnt give them an Eagle crank for free now. Came from Eagle with journals off sized pretty bad.

I done alot of researching when I was looking for a crank, and it seems like a good bit of people has had probs with Eagle cranks.

Seems like Eagle rods are great though, just cranks aint macgined right.

I went with a Scat 9000 cast for my 355. Miced great out of the box. Looked good. Been running it since jun/july in mine and no prob so far

have 2 eagle 4340 cranks 1 in the 434 1 in the 427 no problems

I wish I knew what I know now...you wouldn't be able to give me one now.

Built up my motor last year..ran it in the stand..put it in the car..everything fine until I went to install my transmission...I couldn't thanks to Eagle.

Couldn't put a pilot bearing in it because the end of the crank was machined all wrong. Spent about $200 on a couple of custom machined pilot bearings and another $150 in tools (micrometers, etc.) before I found something that would work. Eagle was not so helpful when I called them..it was very tense. Took we 3 months to get this all figured out and the TKO tranny in the car. I was livid.

The Scat cranks come from the same foundry but SCAT has a better reputation for machining tolerances. During my issue, my machinist sent 2 other Eagles back b/c the journals were so far off. Save yourself some greif.

Get a Scat. They've been in business since 1968 and have much tighter QA. I don't know why guys even bother with Eagle stuff when the Scat stuff is the same price or less.

What about that new lunati sledgehammer?

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Eric aka(Morkai)
'79 Z28, Silver, T-Tops, 388ci 'stroker, 200-4R, 3.73posi
'70 Camaro, Pro-Street Project
'87 Grand National, Stock, 2800-lockup

"186,000 miles a second, it's not just a good idea... it's the law."

I imagine Eagle has machining problems just like any other manufacturer would-come swith mass production-the real issue is IF you get a crank that is that far off, you should not have any problems getting the issue resolved, so it depends on who you deal with. I had to have a little more weight added to a 4340 crank becasue I wanted it balanced to 8,500 RPM. It had just a slight wobble. As for the Lunati cranks, they are great as far as quality but the price will lighten your wallet that's for sure. I talked to a machinist about the Eagle cranks and he said he has had many issues with them over the years but, Eagle cranks make up about 80% of his business too. Like I said, you deal with enough of them, you're going to get a weird one from time to time-hopefully it's not more often than that. Jabin