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Old 02-02-08, 06:54AM   #1
bondobird
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Default i need opinions

on cams. i have a .030 over 400 all stock bottem end. i actually thought i spun a bearing...the oil pressure gauge line busted and spued all the oil out the motor. i ran it for 5 minutes with no oil and no pressure. it was knoking like a son of a bitch. any ways a week later i put oil in it and fixed the leak and now its fine except i think the cam started to go flat from lack of oil. i actally ran through the valves earlier that day and now the lash is loose on all valves.
heres the deal. i was running a ram air 4 cam. i dont have money to buy a new cam but i have a cam lying around but i think it might be way too big for my setup.256 duration at .050 and .525 lift. its a 406 with only 8.4:1 compression. it has ported 6s heads that are supposed to flow in the 260s-270s. and i only have a performer intake. so with that low of a comp. ratio will it just make the car guttless? or do you think it might actually help the performance cause its got good flowing heads? it has a 850 race demon and a 280 gph fuel pump so it has the fuel system to support it. and it has 1 3/4 headers and 3inch exhaust dumped at the diff. what do you guys think? should i wait and get a smaller cam or just run this one? also my car has a 3000stall. im not sure if i would be enough stall for this cam.
let me know, id really apreciate it. and sorry for writing a whole book for a simple question.lol
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Old 02-02-08, 12:36PM   #2
Mb125
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Id use a smaller cam, you might not have enough compression for a larger one. Check what your cranking compression is now, it will dictate what direction to go. I have the same engine and head combo you have but with the RA3 cam.
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Old 02-02-08, 05:06PM   #3
bondobird
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cranking compression? im not sure what that is. if it's just cylinder pressure then with the small cam it made 135psi across all. that was about a year ago though. should still be the same.
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Old 02-03-08, 12:40AM   #4
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It should be up around 150+ psi to give you the bottom end umphhhh your looking for you should try something a bit smaller
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Old 02-03-08, 12:57AM   #5
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Yeah you really need at least 150 psi...
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Old 02-03-08, 11:16AM   #6
tjs44
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FYI,if you lost your cam that will mean there was a lot of metal going through the engine.Start with the cam and lifters,then checkout the cam bearings.My guess you will need a complete teardown to clean the engine properly.Complete rebuild in your future would be my guess.JMO,Tom
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