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Robbie Welch · 08-28-2013, 07:49 AM

We've run in to this at the shop I work at. We've got a customer with a 555 BBC he came to us after breaking a timing chain. We repaired the damage (bent valves ect) replaced the chain and all was good for about 30 pass's and you guessed it, even with a up grade timing chain it broke again. He run's a burnout chip at a pretty high RPM The shop owner's been telling him to get rid of the chip maybe he'll believe David.

08-28-2013, 07:49 AM	#3
Robbie Welch Live Reporter Join Date: Sep 2005 Location: Golden Beach Maryland Posts: 1,234 Likes: 55 Liked 262 Times in 124 Posts	Re: 2 step & bad harmonics We've run in to this at the shop I work at. We've got a customer with a 555 BBC he came to us after breaking a timing chain. We repaired the damage (bent valves ect) replaced the chain and all was good for about 30 pass's and you guessed it, even with a up grade timing chain it broke again. He run's a burnout chip at a pretty high RPM The shop owner's been telling him to get rid of the chip maybe he'll believe David.