5.5 head

[Bob Bidonde]

I have a 5.5:1 head on my Coupe and a 6:1 head on my Victoria. The 6:1 head has a noticeable increase in torque over the 5.5:1 head. To use the full travel of the spark advance lever, special tuning is necessary. Here is what I did to regain full travel of the spark lever.

[Bruce of MN]

This was my approach to limiting advance: https://www.fordbarn.com/forum/showp...2&postcount=23

And my 6:1 head has improved the driving pleasure a lot.

[California Travieso]

Originally Posted by Bruce of MN

This was my approach to limiting advance: https://www.fordbarn.com/forum/showp...2&postcount=23

And my 6:1 head has improved the driving pleasure a lot.

Bruce,

I like your approach to the problem. Approximately, how many clicks up from full advance did you place the stop on your car? From Bob’s diagram I would assume it would be 4 to 5 clicks up for a 6.0 compression head.

David Serrano

[Bruce of MN]

Originally Posted by California Travieso

Bruce,

I like your approach to the problem. Approximately, how many clicks up from full advance did you place the stop on your car? From Bob’s diagram I would assume it would be 4 to 5 clicks up for a 6.0 compression head.

David Serrano

The underside of the device is flush against the bottom and the top is filed to give the 28 degrees using the Nurex timing strip as mentioned in my post. I never looked to see how many clicks.

[Hitman]

Originally Posted by Bob Bidonde

I have a 5.5:1 head on my Coupe and a 6:1 head on my Victoria. The 6:1 head has a noticeable increase in torque over the 5.5:1 head. To use the full travel of the spark advance lever, special tuning is necessary. Here is what I did to regain full travel of the spark lever.

I don’t agree with this. Actual timing and dwell measurement will help in significantly finding your ignition sweet spot considering elevation p, fuel quality and other things.