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Cam for 1970 Turbo Fire 350-300HP (HELP!!!)


1970MonteMotion

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Hi guys and gals,

I am currently in the market for a good cam. I prefer Lunati. I had one a few years back in 1971 350 LT1 and it sounded/performed great. I guess my question would be, which cam and lifters are for me? So many choices... Hydraulic roller, Hydraulic flat, solid roller, retro fit etc... I can't remember which one I chose last time, or why I chose it. If it helps, some of my other mods on basically a stock block would be Hooker Headers, 750 Holley carb, hi-rise Holley intake,and I may change the heads out to 327 double humps, but not sure. I know my last cam was a bit radical, because I had to add a stall to the tranny, and I want to say it was a 3000 stall but not certain. I'm not even sure why I swapped the heads on the last one, but it made the compression higher. My builder talked me into it. That may be about all I do. No pistons, bores, cranks/strokes... atleast for now. All opinions welcome.

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the two biggest mistakes people make is over cammimg and too much carb, I feel a 650 is more than enough carb (I run a 750 on a 454) call Lunati, they'll help you out, I, myself won't use flat tappet cams anymore

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the two biggest mistakes people make is over cammimg and too much carb, I feel a 650 is more than enough carb (I run a 750 on a 454) call Lunati, they'll help you out, I, myself won't use flat tappet cams anymore
Appreciate the reply, I'll consider the carb size, or reconsider rather.
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Roller is the way to go nowadays, esp with today's zinc-less oils. Sure its more money, but worth it. And your neighbors won't call the cops when you are breaking it in!

 

I had a 650 double pumper on my 350 in an 85 Monte, and that was plenty of carb.

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Cam - can't help ya... but CARB, I can back up all of the above. For a 350 you shouldn't need 750 CFM. You'll be fine with 650 and below...

 

I run a Holley Ultra Sreet Avenger 670 CFM on my 383, and it is a hell of a breather...

 

If you do go Holley, I really like the new Vacuum secondaries they have (as long as you tune them right). They sound really cool when they open up.

 

You also probably already know this - but don't forget to buy the Jet Kit, and the Accelerator Pump Cam & Nozzle kits, as Holleys NEVER are set right out of the box (despite their claims)...

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