View Single Post
  #39  
Old 01-13-2023, 05:50 PM
Steve C. Steve C. is offline
Ultimate Warrior
 
Join Date: Dec 1999
Location: Liberty Hill, Tx. (Austin)
Posts: 10,432
Default

"Steve C has broke 2 cranks. One is Crower billet broke in the fixture like you said Paul. The other was a cut down 455N crank that had the thrust welded. I think the N broke in a couple places and mortally wounded the block. If I recall right it was still running fine and they caught that on a tear down inspection."

Jay is correct.

The first was a 455 crank modified for my original '70 400 block. It went into service in Feb 1998 (626 hp at 6400 rpm). The engine was running at the time we found the damaged crank and damaged block.

The second was a custom Crower 4.250" billet crank made for my current 505. Its first dyno session was in March of 2007. In April of 2018 we had to tear down the engine for an bearing issue and found the crank bent. When the machine shop tried to straighten it the crank broke. It was replaced with a SCAT 4.250" forged crank that I bought from Paul.


.

__________________
'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 )
Old information here:
http://www.hotrod.com/articles/0712p...tiac-trans-am/

Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine)
5.14 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension
https://www.youtube.com/watch?v=qDoJnIP3HgE

Last edited by Steve C.; 01-13-2023 at 06:18 PM.
The Following User Says Thank You to Steve C. For This Useful Post: