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Pud237 · 29-04-2008

Originally Posted by bearex

and of course that would help fuel economy.

You are right of course, is something I thought about doing in my 3.0 V6, which does 3,000rpm in 6th at 70mph!

But, having looked at the possible fuel savings (2-4mpg maybe?), compared to the cost of doing the swap, it would take years to even break even!

But, I can see the reason behind fitting the closer ratio 6-speed box. That would be a good performance mod, a longer 5th gear is just money saving in the long-run, compared to a big outlay now. It would be easier to put on bigger tyres next time they needed replacing..

29-04-2008	#33 (Post Link)
Pud237 AO Platinum Member Join Date: Apr 2006 Location: North Yorkshire Posts: 13,527 Member car: Alfa 156	Re: 6sp. gearbox into 147 jtd 8v Originally Posted by bearex and of course that would help fuel economy. You are right of course, is something I thought about doing in my 3.0 V6, which does 3,000rpm in 6th at 70mph! But, having looked at the possible fuel savings (2-4mpg maybe?), compared to the cost of doing the swap, it would take years to even break even! But, I can see the reason behind fitting the closer ratio 6-speed box. That would be a good performance mod, a longer 5th gear is just money saving in the long-run, compared to a big outlay now. It would be easier to put on bigger tyres next time they needed replacing.. Back on the road: Alfa 156 3.0 24v V6, Silver with red leather, Q2 diff, GTA Teledials, headlights & inlet manifold, AutoDelta carbon intake, decat pipe and SuperSprint rear box, FK coilovers, Dastek Unichip - my 245bhp beast! Gone but not forgotten: Alfa 156 2.4 JTD Veloce, Vela Blu, Angel 'mad map' & BMC CDA, Ferodo DS2500s - the fastest tractor in town! AO 'Bratpacker' No 5.