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Original Message
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| Hot Rod buildup |
| By Dano - 11/01/2004 7:24:51 PM; IP 67.50.228.134 |
| Also, on the Edelbrock heads you may want to have the rocker oil holes drilled and tapped for the Holley jet restrictors, and be sure to double check the head gasket/cylinder head oil drainback holes for good alignment, this will save you some potential headaches down the road. I built my 390 exactly the same way that Hot Rod did except I used the Erson rocker setup instead of factory rockers, and it is a great combination. I got 420hp @ 5300rpm and 479 lb/ft. I had problems with too much oil going to the heads, and the valves started to float at 5400 rpm, I think there was more power on tap since the hp was still climbing but the valve float ended any higher rpm dyno testing. Since I have installed the restrictors and run the engine for about a thousand miles, It revs freely to at least 5900 rpm now. One thing that Hot Rod did also was to clearance the valve guides to the valves, they thought it was a bit tight, that may be what caused some of the inital valve float in my engine. Plenty of vacuum for the power brakes also. I used FPA headers that were on the engine for the dyno. They fit perfectly in my 69 Mustang with 4 speed, lakewood belhousing and power steering, with virtually no leaks! Its a pretty awesome performer for a pump gas, daily driver 390! |
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