[quote=TUTS 59]I would imagine it all comes down to what RPM power band your cam develops. If the gear is to tall it will lug the engine, to low and it works to hard. Use an RPM calculator to help find that sweet spot.


Think of the bike analogy again:

If you try to climb a hill with your chain on the little back sprocket (the speed gear) your legs are going to DIE because it’s so hard (engine lugging)!

If you try to go as fast as you can with the chain on the big back sprocket, you are going to be pedalling like a son of o’ gun and won’t be moving quickly at all (ENGINE SCREAMING)!


1970 Chevrolet C10
Grandpa's -- My first truck -- In progress to shiny
Follow the build in the Project Journal
1950 Chevrolet 1-Ton Dually
"Ole Red Girl"
In the Stovebolt Gallery
More pictures here
1951 GMC 9430 1 ton dually--Shiny! | 1972 Chevrolet C20- Rusty- the puzzle box lid for the C10 | 1962 AMC Rambler American- my wife's
Parts trucks-
1951 GMC 9300 | 1951-GMC 9430 | 1951- Chevrolet 1300