Hi Bob,
Don't go any larger or wilder than you NEED to. Every cam has an operating
range or a RPM range it is designed for. If you get a cam that makes it's
torque and HP's from 4000 to 6000, that will do you little good. My TR3
cruises at 60-65mph at around 3000 to 3500. I think I got a mild race or hot
street cam that operates at 2800 to 5500rpm. When I hit 2800 RPM I can feel
the car take off or "come on cam." Racers drive at wide open throttle and
high RPM's. You will not get much benefit from that type of cam.
I hope this helps your cam shopping.
Cheers,
Mike
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>From: Bob and Nancy <wises@mail.execpc.com>
>To: triumphs@autox.team.net
>Subject: TR3A cam
>Date: Tue, Sep 26, 2000, 8:32 PM
>
>
> Once again I dip my bucket in to the well of the Triumph collected wisdom.
>
> My 1961 TR3A engine is in the shop getting a complete rebuild
> (balancing, 87 mm pistons and sleeves, rear crank oil seal, head
> rebuilt, etc). The old cam is shot, so I need to buy a new one. The
> shop owner tells me that unless I go for a wild racing cam, there are
> few ramifications of a "hot" cam on compression, carbs, valves,
> valve springs, and such. Given such latitude, what is the group's
> thinking about going with a little spicier cam? I don' t intend to
> push the car too hard when it is done, but I do have this one
> opportunity to tweak the engine a little. Any ideas?
>
> bob
>
>
> Carpe cervasium
>
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