406 engine
#1
Junior Member
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Thread Starter
Join Date: Aug 2007
Posts: 10
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.
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.
#3
Senior Member
DYNO OPERATOR
Join Date: Aug 2005
Location: Rifle Colorado
Posts: 585
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.....
#4
Senior Member
DYNO TECH
Join Date: Feb 2004
Location: Leonard, Texas
Posts: 414
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.....
#5
Senior Member
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Join Date: Feb 2006
Location: VA Hospital, Dallas, Tx (214 302 1924) cell-972-464-7400
Posts: 540
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!
Ed
#6
Senior Member
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Join Date: Apr 2003
Location: Brookings South Dakota
Posts: 244
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.
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.