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Old 07-21-2005, 01:08 AM
Keithc8 Keithc8 is offline
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Join Date: Mar 2003
Location: Arkadelphia, AR, AR
Cobra Make, Engine: Kirkham 427 brushed aluminum with Keith Craft 527C.I. all aluminum FE
Posts: 992
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SZome of the other FE engines that we have done with smaller cubic inches that made more power had about 15 to 1 compression, much larger camshaft, better intake and carburetion. I could have picked up about 15 to 20 HP with 2 inch spacers under each carburetor but I can not run them in the car so I did not run them on the dyno. The camshaft that I used is very smooth with about .660 lift at the valve. The reason the Jesel lifters are so expensive is that the material used in them is more money. They have a very large wheel with large axle and bearings. I have not tried the Shubeck roller style lifter but I need to do that and see how they work. The distributor has a bronze gear on it right now, but may install a steel gear for longevity. We use the bronze gears on our circle track engine and put about 300 laps on them with no problem and this is with running as high as 9000rpms.
The square engine combination will usually make more torquw because of the stroke. The thing about this engine is that it made 700HP at about 5500 and still making 750 at 7100 with peak power at 6700rpms. I was trying to build a real drivable engine with a broad power band. The carburetors are fairly small to give real good drivability and response.
I will try and weigh the engine as well as get some picturs posted. I have to have the wife help with the pictures since I am not good with the computer.
The reason I did not use the Blue Thunder heads were the exhaust were raised a little to high for the headers Kirkham supplied which are for standard exhaust location. Thanks, Keith
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