Thread: 6" con. rod in 383?

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There is a reference article showing the effect of longer rods in a 350, not a 383, but the priniciple should apply to the 383 as long as you can solve the problems of the tight inner space between the crank and cam which is made even tighter with the long rods. Another good news/bad news tradeoff is that the pistons need to have higher pin positions. On the one hand that probably reduces piston rocking and side slap but on the other hand the higher pin position makes it tricky to place the rings on the piston away from the pin hole. Maybe Dave S. could build one of these within the cu in limitation for his track car. I suspect this information is out there among the track racers but it requires more than usual engine rebuild assembly so there are probably few of these engines on the street. I considered this build up but figured it was beyond my talent and wallet.

Don Shillady
Retired Scientist/teen rodder