Hey Damage, did you find why your timing chain broke?
I finally had my Keith Craft 428 ready to go. Dyno showed it underpowered by about 100hp.
Emails showed a lack of interest from KC.
Found the cam timing was off when it was installed at KC.
And then the timing chain broke at 4,800rpm.
Heads haven't been pulled off yet to check for damage. The
oil dipstick shot out like a bullet.
Grrrrr....