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Author Topic:   Lobe Seperation questions
Jerry Piner

Posts: 177
From: staunton, va
Registered: Dec 2001

posted 08-14-2002 11:08 AM     Click Here to See the Profile for Jerry Piner     Edit/Delete Message   Reply w/Quote
I know this has been discussed before but can't quite get a handle on it.
How does lobe seperation affect a cam and it's performance.
Also have heard that you shouldn't go below 110 for stock heads but other say 108 & 106 is okay, which is true?

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Posts: 110
Registered: Nov 2000

posted 08-14-2002 11:18 AM     Click Here to See the Profile for Rustang1   Click Here to Email Rustang1     Edit/Delete Message   Reply w/Quote
Probably depends on the cylinder head. I've always like 108 regardless. Also nitrous guys like to run wider seperation, but you talk to cam and nitrous companies and they typically tell you to run what the motor likes NA then spray that combo. The rule of thumb is wider seperation gives better idling and more top-end power (usually at the very top of the power band where it is of no use) while tighter separation gives lopier idling and better midrange.

1968 Mustang,Clevor,C4
1969 Torino 351C 4spd
1978 F150 460 C6
1978 F150 351W C6

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Posts: 2419
From: Spencer, WV
Registered: Jan 2001

posted 08-14-2002 11:38 AM     Click Here to See the Profile for n2oMike   Click Here to Email n2oMike     Edit/Delete Message   Reply w/Quote
Here's an earlier thread...

And a VERY detailed thread with all kinds of great info, go here...

Good Luck!

Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3

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