English Discussion gearbox ratio

@Jean-Marc 51 Thank you for this
My current battle is my gearbox ratio. Here in United States a 4.375 final gear ratio makes it very unpleasant to drive on interstates

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Merci pour ce document
Mon combat actuel est le rapport de boîte de vitesses. Ici, aux États-Unis, un rapport final de 4,375 rend la conduite très désagréable sur les autoroutes.

hello here are the different possibilities, but do you wish, a 4-speed gearbox or do you want to upgrade to a 5-speed gearbox

@Jean-Marc 51

I have been looking at both options, but have noticed that 5spd builds require you to chop the floor and/or the main frame that goes down the center of the car.
I have also been looking at Steve Swan's posts on other forums, and most of his info explains that some of these options (big 4 speed or 5spd) could take quite a bit of machine work and/or various pièces to source. With this being said, some of these options could be challenging to tackle while living in the states.
On another note, I just purchased a rebuilt motor. It is a 1.4 C3J block with a crossflow R5 Alpine head. Since i have gone down this path, I will continue with the same spline and bell housing as my current 330-06 gearbox. The end goal is to lower my final RPM for highway speeds

Hello I make custom gearboxes, but on the site I don't talk about bisness, I only give advice, if you want to talk about making a gearbox to adapt to your use, contact me "jean-marc.albert4@orange.fr", I will study several solutions with you, and you will choose what suits you best

@Jean-Marc 51 Thanks!!

@Jean-Marc 51
Per your spreadsheet, do you have the cannelure for each of the transmissions?