406 engine

Old 02-08-2008, 03:26 AM
  #1  
amal
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Default 406 engine

Hi all

I am new in 406 engine and recently I decide to order 406 rotating kit 3.75" crank shaft with 6"conecting rod H beam. Do I need to order low base circle camshaft to avoid hitting connecting rod with camshaft like 383 engine or normal base camshaft work fine.
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Old 02-08-2008, 04:21 PM
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SST4530
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I would order the small base circle cam.
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Old 02-08-2008, 05:05 PM
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johnracer
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I've built a number of 406's and 383's with h-beam 6" rods and roller cams and have always used standard base circle. The only problem I've experienced was the first 406 I built. It had stock 5.7 rods and a small solid cam. I had to grind the cam side rod bolt heads to gain the necessary clearance. I'm pretty sure that most h-beam rods are profiled to gain the necessary clearance. You'll need to check it just in case.....
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Old 02-08-2008, 07:25 PM
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SST4530
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Originally Posted by johnracer
I've built a number of 406's and 383's with h-beam 6" rods and roller cams and have always used standard base circle. The only problem I've experienced was the first 406 I built. It had stock 5.7 rods and a small solid cam. I had to grind the cam side rod bolt heads to gain the necessary clearance. I'm pretty sure that most h-beam rods are profiled to gain the necessary clearance. You'll need to check it just in case.....
I had the same problem with my first one back in 84. Now I just get the smaller base circle as a precaution. A little more clearance in this area can't hurt!
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Old 02-08-2008, 07:31 PM
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edvancedengines
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I had the same problem with my first one back in 84. Now I just get the smaller base circle as a precaution. I little more clearance in this area can't hurt!
Me too.

Ed
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Old 02-10-2008, 07:56 AM
  #6  
cncmotorsports
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Default Re: 406 engine

Originally Posted by amal
Hi all

I am new in 406 engine and recently I decide to order 406 rotating kit 3.75" crank shaft with 6"conecting rod H beam. Do I need to order low base circle camshaft to avoid hitting connecting rod with camshaft like 383 engine or normal base camshaft work fine.
You will not need a small base circle camshaft
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