I am getting my 235 motor ready to swap into my 51 Styleline. The 235 is out of a 55 truck. I have the short pump and when I go to put the fan on, its hitting the balancer. I did have the balancer off to do the timing cover but im sure its on all the way. Do I need to use a different fan? It has about .250" to the pulley and is alrady hitting. wtf!
i ran into the same thing on an OT truck . I replaced the clutch fan with a flex fan & it was hitting the alt ---a 1 inch spacer fixed everything
We sell the 235 SS water pumps & we run across this all the time. Easy fix though using a spacer once you figure out what size spacer you need.... I had to use a 1/2" spacer on my truck but every installation is different. You can get the spacers here.... http://www.buyautotruckaccessories.com/product.cfm/cf-bin/pn.derale-fan-spacer-kits/ And here.... http://www.streetperformance.com/m/cats/199-cooling-and-hvac/4315-fan-spacer.html
No. The GMC fan blade bolt pattern is different & trying to re-drill a GMC fan to fit the Chevy pump is a recipe for disaster. You could "clearance" or grind your Chevy fan blade out with notches but you would need to use a pattern & make sure each blade is identical.... still not recommended.
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