Quote:
Originally Posted by mgarblik
Huge number of changes/up-dates in one off season. Love to see all that work being done to go faster and be more reliable. Dedication right there. I personally like the 482-500 Cu In. package better than the longer stroke, but allot of expense to make the change. What RPM's were you turning with the 4.5" arm? Any issues, or just a cautious change to push it harder in the future? When we ran the Grocery Getter with the 4.5" stroke, we felt we needed the extra cubes to get that very heavy car moving. You are probably 400 lbs. lighter than we were. Best of luck this year.
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Thanks Mike,
Yeah, some updates were due to broken/worn parts, the main driver for changing the crank at this time was the need for pistons. To clean up a few of the bores we needed to go 0.010. The shorter stroke and aluminum rods will give us additional RPM head room as well as reliability. There were no major issues with the engine aside from the cracked damper hub and some signs of cracking on the cam key way. We're also replacing the keepers and retainers based on Victory's assessment of the valve train, they indicated we had few retainers where the taper was opening up. We did drop an intake valve last July. Victory suggested their Ti-17 retainers and associated keepers. The valves are also being lightened and we're performing a valve job.
We were keeping the rpm under 8000 with the 4.5 stroke. Did the Grocery Getter weigh over 4000lbs?