Leaning towards the close ratio. <img src="https://www.chevelles.com/forums/images/smilies/beers.gif" border="0" alt="" title="Beers" class="inlineimg" />
This is not a good decision in my opinion. Wide ratio with a deep over drive will trump a close ratio in almost every situation. Myself being someone whom drives there car more than most, here’s what I have learned why a wide ratio is better.
Big cam in your big block... wide ratio easier to get off the line in all situations
Stop n go traffic, wide ratio
Lightweight flywheel, wide ratio gives you the SLR
Lightweight flywheel and big cam, wide ratio for sure
Live in a area with a lot of hills, wide ratio
In drag racing and under 700hp, wide ratio will yield better 60fts
Deep over drive will always yield better mileage
Most will say your going to have traction problems. Ok logically if you have a traction problem, a ratio change is not going to fix it. Better suspension setup will.
Close ratios are good if you have a engine that does not make much torque or want to keep things in the zone. For Genral driving/cruising you will be shifting more because of the gear spread being close.
Your driving a big block, it makes torque so use it. There is no need to keep rpm spreads to a minimum. As well tie this up with a sniper or fitech and you should yield 20mph at highway speeds cruising at 80 or better.