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hot cam

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hot cam

Post by Butch Thompson on February 26th 2013, 2:22 am

what in the world is a 3/4 cam i think ive been around a long time and herd peoples b/s what r they talkin about wats the lift and duration on that thing
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Re: hot cam

Post by Reb Stew on February 26th 2013, 5:44 am

I use to hear that when we were younger. Never knew what specs they were talking about either.
Anyone? Very Happy
Enlighten us...

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Re: hot cam

Post by Nanook on February 26th 2013, 6:46 am

For years I always thought it was - .750" lift cam.

.500" = 1/2
.750" = 3/4

But really it was more of a popular term from the early 1950s until the early to mid 1970s. a 3/4 cam was meant to say that you had a 'not quite for racing' cam in your car. A 'hot cam' for sure but not what full-blown circle track guys were using. Hence, you wanted 'three-fourths of what the racers are using' if you spec'd a 3/4 cam back in the day. Not really a terrific way to match your cam to everything else in your engine (and stall) though. clown

And while we are on this subject an 'RV cam' always referred to a cam that had a bit more low-end grunt than top-end (hence why it was spec'd for an RV). At least that's what I knew that particular term to mean.

Later,

Lee


Last edited by Nanook on February 26th 2013, 3:39 pm; edited 1 time in total
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Re: hot cam

Post by Reb Stew on February 26th 2013, 6:54 am

Works for me...

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Re: hot cam

Post by 911TAZZ on February 26th 2013, 7:03 am

A 3/4 cam is generally 280*-290*duration and 480"-500"lift anything less is in the range of an RV cam anything more and you're getting into a full on race cam. At least that's what I was told back in the day.
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Re: hot cam

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