Crankshaft Drilling Fixture Balancer bolt 283 327 250 235 261 230 348 409 Tool

Description

Use this very reasonably priced tool to help drill the snout of cranks (includes USA made tap and drill)
Fits
Chevy inline 6 194 230 250
Chevy 348, 409
SBC 265,283 and 327
Chevy inline 216, 235 and 261
GMC 248,270,302,
Chevy 153 4 Cyl also as used in Mercruiser and ChevyII .
The cranks are not drilled from the factory and adding the 7/16 bolt hole will aid you on installation of the balancer and retention of it. Much better than hitting it on with a hammer.
Precision made to fit on the end of the crank. The fillings drop out the side while drilling. A hardened drill bushing is used for perfect alignment of the drill during drilling.
Procedure can be done in chassis You may need to lift engine for drill clearance.
This procedure can be performed on a assembled engine.
The tool will fit on the snout. Be sure to plug the seal hole with a rag and direct the slot to the down position for chip discharge.
7/16-20 tap and proper drill bit are included.
Made in USA
Drill 1.75 deep.
Best to drill when crank is out of engine. I bolt the flange side to the flywheel/ flexplate to make it safely stand on end for drilling with hand drill.
I am always needing to drill crank snouts on 250 engines. Usually do it on the Bridgeport, but it is apart for repairs and have not had time to fix it. So I put the CNC to work and made this easy to use tool.
This tool is used to drill a perfectly centered hole in the tip of the crank to be tapped for a harmonic balancer bolt.
283-327 Chevy Inlines 235-261 194 230 250.
Can be done to a assembled engine, just align the discharge slot oriented down for the shavings.
This is f
or a 7/16-20 thread. A precision drill bushing is used to align the drill. Have another size available to do 1/2.
Snout tool crankshaft drilling fixture (engine assembled)
Video will open in a new window
[Gambit597 - YouTube]
MOBILE USERS
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https://youtu.be/UAjSg8Gq9GA