Join Date: Nov 1999
Location: Central California, USA
Re: Which PS Pump Pulley?
Here's my combo, you need the 3rd groove crank insert 3744043 to match up to your PS pulley.
3744043 crank - double groove, low perf V8
3751232 crank - PS drive insert single, low perf V8
3890419 water pump double groove, low perf V8
3770509 PS pump low perf V8
Above came on my 67 327/275 with California smog pump, PS.
Check my web page for First Gen Camaro suspension info:
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67 RS 327 original owner. 1965 Lola T-70