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Old 12-02-2022, 04:39 PM   #1
Chipper Chapman
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Default 283 2BBL Cam selection

Can anyone shed some light on what works and what doesn't necessarily work in reference to duration and lsa in a 283 2bbl combo? Looking at the intake and carb I feel like this is something that is not going to want a lot of rpm. If that is correct I would assume a shorter lsa is required to use the available rpm range, but what range should I be looking at for in duration?

Thanks, Chris
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Old 12-02-2022, 04:51 PM   #2
Billy Nees
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Default Re: 283 2BBL Cam selection

Well, in my 307 (roughly the same everything except stroke) it ran well with 234/236 @ .050 on a 106 lobe sep. and in at 102 with a Powerglide. With a 3 speed, I'd probably back the cam up a few. It's going to make peak power at 6000 or less.
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Old 12-02-2022, 06:34 PM   #3
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Default Re: 283 2BBL Cam selection

I ran a 350 ci 1970 250/224 HP 2 Barrel combo. I have a new Bullet cam sitting on the shelf at the shop if you want it.

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Old 12-02-2022, 06:51 PM   #4
Chipper Chapman
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Default Re: 283 2BBL Cam selection

Quote:
Originally Posted by Billy Nees View Post
Well, in my 307 (roughly the same everything except stroke) it ran well with 234/236 @ .050 on a 106 lobe sep. and in at 102 with a Powerglide. With a 3 speed, I'd probably back the cam up a few. It's going to make peak power at 6000 or less.
Thats some good info Billy. I happen to have a cam here that was a take out from a circle track engine, and its 235/241 on a 106, so I will likely try it as a baseline knowing this.
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