Going with the 915 trans, I'm taking the plunge Options

[groot]

I've researched it and decided to go for the 915 trans.

Due to job insecurity, I'm not comfortable buying a Hewland at this time. And since I'd need a replacement 901 case (or at least a ring and pinion-see "Pinion failure" thread) which would run me a few hundred bucks, I decided a few hundred more for the added strength of a 915 might be a good plan.

I scored an '84 Carrara 5-speed for <$1000. I will flip the ring myself and replace whatever else needs to be replaced over the next few weeks.

I have to decide whether I should add a cooler and pump or not....

For now, I will run the stock ratios. Check out this gear chart.... 2, 3 and 4 in the stock 915 box are remarkably close to what I was running in the 901 box. I only used 3, 4 and 5 with the 901. Knowing that Topeka has some very slow corners, I know I needed a lower 3rd (901), which 2nd in the 915 gets me. The purple box is an estimate from Jake about where the race engine will make good power.

As for the linkage... I've got a few ideas. I don't want to spend the $$$ for the WEVO setup, although it looks georgeous. If there's interest, I'll post progress pics.