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Or a corporate small block 403 c.i.Oldsmobile. -
Ok... Cylinders heads themselves standard, just decked for straightness. Valves too - seats done for ULP, but nothing special otherwise. Rotating assembly balanced, yes. Cam specs are as provided, but from what I gather that is pretty close. Apparently those cams come pretty highly recommended for the expectations of our build. Butler themselves suggested it to be a good choice for a "warm" street build. Not sure what you meant by "050"? Fuel availability is 98, 94/95, 91, Ann a 10% ethanol blend. When built I tried both 98 & 95 - the car seemed to run a little cleaner on the 95, so I've stuck with that. ice the heads have been done though, the car is much sharper than it was (obviously the new rocker gear has made a big difference), so I guess I'll do the trials again & see what the performance/mileage balance is. The distributor (OEM style) has also been recurved, to give a total (vacuum and mechanical) advance of 32-34 º, which I've been advised is how it should run best. Plugs changed from NGK BP5S to B4's, again upon advisement. And I've fitted a 160 º high flow thermostat, to assist with cooling. Hope that helps - now please, reveal your secrets🤣 -
Ah yes, sorry. Standard manifolds, then 2 ½" from there. Thanks for your input 🙏 Thanks for that, and yes - pictures will follow 🤙
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