cam question?

[renagadebee34]

i baught a 350 with a 1/4 cam? Is a 1/4 cam a good cam, will it give me any kind of lope, thats the sounds im trying to look for. also im looking to buy some heads but i really dont know what im doing when it comes to the springs and all that and all of the heads ive been looking at are 1000 bucks, do you guys know of any that are good and might be cheaper?thx

[kevindtimm]

1/4 race, 1/2 race, etc., etc., etc. don't mean anything anymore (haven't for 20 years). You'll need to supply things like lobe separation, lift @ .050, etc, for anybody to help now

Go to www.chevyhiperformance.com and look for the budget mouse build. One of the first things they do is switch out for a set of new vortec heads (w/matching intake manifold) and a cam. Should be just about $1000 (if you do the labor yourself) and it will do what you want.

[Billla]

If what you're after is "sound", then you don't need better heads

Agree that the "quarter/half/full" race stuff is meaningless.

It's actually OVERLAP that makes lope; this is the time that the intake and exhaust valves are open at the same time. You can find overlap by EC - IO; Exhaust Closing - Intake Opening. Anything in the 70s or so is going to give you "lope".

The problem with high overlap is that it's generally an unstreetable cam as it's made for high RPM. CompCams "Thumpr" line are cams that have significant overlap, but reasonable duration and lift for the street.

[j.files]

What determines the lope on a cam is the duration which is usually reated at .050. The higher the number of the duration the more of a lope. The lope is caused by how long between the intake valve opening and the exhaust valve opening. Hope this helps you out but 1/4 cam does not mean anything.

[Billla]

If what you're after is "sound", then you don't need better heads - that's for making power, not just noise

Agree that the "quarter/half/full" race stuff is meaningless.

It's actually OVERLAP that makes lope; this is the time that the intake and exhaust valves are open at the same time. You can find overlap by EC - IO; Exhaust Closing - Intake Opening. Anything in the 70s or higher is going to give you "lope", depending on displacement, etc.

The problem with high overlap is that it's generally an unstreetable cam for duration, lift, etc. as it's made for high RPM. CompCams "Thumpr" line are cams that have significant overlap, but reasonable duration and lift for the street. A noisemaker.

[renagadebee34]

thanks guys

[LONGHAIR]

1/4 race, 1/2 race, etc., etc., etc. don't mean anything anymore (haven't for 20 years).

20? ....that's a 1950s term, that was already antiquated in the 80s. I really don't know why it still hangs on?