Quote:
Originally Posted by LJ47
Hi All
Finally have most of the parts I need to start building my dream motor a 302 N/A high revving quod cam.
It's been a long time collecting all the parts from the States.
My experience has been lots of promises on service, payments up front and long time on delivering on those promises.
Anyway the only thing left of the puzzle is the crank which I am still waiting for after 27 weeks from ordering and payment 
...
Will keep updating if you guys are interested on the process of the build, transplant, Dyno results and race track testing. |
I built a similar but different variation of the engine LJ. Mine was a standard bore Sean Hyland block with a blower. When I was looking for a crank vendor I wanted specific changes made to the crank for strength and longevity.
While a blown engine works pieces differently than a n/a engine dies, the areas I wanted modified were the snout diameter and length up from 1.25 inches to 1.400 inches. A longer snout for better support of various drive mechanisms including the blower. A bigger and stronger damper attachment using a 5/8 stud that anchors back in the the counterweight for #1 main and gets torqued to 260 ft/lbs. A 2.000" Chevy rod journal for better bearing selection. Rifle drilled main journals for weight reduction. 7/16" SAE NF flywheel bolts because we had experienced some flex plate movement with the stock 10mm fasteners.
The final mod was to use Timken 4330V steel. The 4330V Timken steel is what the current cranks in the Top Fuel Dragsters and Funny Cars use. It roughly doubles the crank life they were getting with various vacuum degassed electric remelt 4340 steels.
The guys who can make this kind of custom crank are the Winberg Crank brothers. Their website is
Winberg Crankshaft (<= clickable) You may not want and probably do not need all the stuff I wanted because you are naturally aspirated and at a different power level.
What you will want is the quality, strength/durability, and pricing they offer. Your chosen crank vendor does not even make his own cranks and sadly carries forward many of the OEM design flaws in his billet offerings. If you have not taken delivery yet I would cancel my order and buy from guys who really know what they are doing and can do literally anything you want.
The backbone in your engine is your crankshaft - choose wisely.
Ed
If you decide to investigate Winberg ask for Randy Winberg. Tell him I sent you and you will be quite happy with the experience if you decide to go that route.