That depends upon what model you have etc. If you have a small nut redux box transaxle there are many possibilities. http://sandlizrd.baja.com/gears.htm With stock 1.40:1 redux boxes for a 36HP and a 4:37 R&P you have a 6.125 final drive ratio. With a .79 fourth gear (taller than the bug!) you have a 4.84 final drive. Assuming a 195/75/15 tire and using the handy calculator here.. http://www.miata.net/garage/tirecalc.html That gives you a circumference of 83.3 inches or 761 revolutions/mile. Assuming 60 MPH is the target speed 761 * 4.84 = 3683 RPM. Rough calculations indicate that 70MPH is 888 Revs/minute with those tires so that comes out to be rougly 4300 RPM. That's a bit of a pounding on the engine for a stock ACVW. If you go with big nut reduction boxes your final drive drops to 4.51 which gives you 3432 RPM and 4004 RPM respectively. Going with a 4.12 R&P drops that further as would a 3.88 R&P. Net, Net, if you're going with a 1600 you should go with what VW recommended with RGBs and that's the 4.12 and the 1.26 RGB gear ratio. If you're above an 1600cc, like a 1776, I'd go with the 3.88 R&P with RGBs but beyond that you're just wasting engine power if you go bigger. On Wed, Sep 9, 2009 at 9:50 AM, James Dwan <james_dwan_2000@xxxxxxxxx>wrote: > So with a split case tranny, which is what it came with originally, I won't > be going faster than 50 mph? > I don't think I'll want to be going faster than 60 but I am concerned with > entering/exiting the highway going that slow in Dallas. > So stock = 50mph max? > > --- On Tue, 9/8/09, atx <atx_bus@xxxxxxxxx> wrote: > > > From: atx <atx_bus@xxxxxxxxx> > > Subject: [tcb] Re: What size engine for the '59? > > To: "tcb@xxxxxxxxxxxxx" <tcb@xxxxxxxxxxxxx> > > Date: Tuesday, September 8, 2009, 10:15 PM > > A single port can easily do more > > than 50 in a splittie. Sounds like a tranny swap might > > be likely, from the experts. I can cruise at 65, if > > needed. I choose to go a little slower, stopping is my > > biggest concern. > > I'm running a 1600 single port. So it > > wouldn't look totally OG, but it could give you some > > acceleration. > > Jeff > > sent via iPhone > > > > On Sep 8, 2009, at 9:51 PM, "Denis" <coocoo@xxxxxxx> > > wrote: > > > > > > > > The Zone is no normal > > animal, with all his tricked > > out suspension, brakes and steering, but I can do 70 easy, > > but as my Dad once > > said, if you come up against a watermelon at that speed, > > you're gonna > > lose. > > > > ----- Original Message > > ----- > > From: > > sammie > > smith > > To: tcb@xxxxxxxxxxxxx > > > > Sent: Tuesday, > > September 08, 2009 9:46 > > PM > > Subject: [tcb] Re: > > What size engine for > > the '59? > > > > > > > > > > > > > > Well, it depends on what you want to do > > Paul. The Baja is > > about as non-stock as you can get a VW and will > > cruise all day long at > > 3,700-3,800 rpm effortlesly with its 2000cc engine > > which is about 80mph > > with its tires and gearing. And in response > > to Denis; your e-mail > > got me curious so I counted the states that the > > Baja has been in; 16; > > and driven to, in, and from all of them. > > > > But; in a stock suspension split window bus, > > regardless of engine > > and tranny, about 65 is a max top speed to be > > safe. Those things > > get awfully squirlly at much faster than that. > > > > --- On Tue, > > 9/8/09, singlecabboy <sealingwaxred@xxxxxxxxx> > > > > wrote: > > > > > > From: > > singlecabboy <sealingwaxred@xxxxxxxxx> > > Subject: [tcb] Re: > > What size engine for the '59? > > To: tcb@xxxxxxxxxxxxx > > Date: > > Tuesday, September 8, 2009, 9:24 PM > > > > > > James ,I run a 1641 in my > > single cab,dual > > kadrons,110 engle cam .I don't believe in > > high compression street > > engines , and no reduction gears , 3600 is about > > what I run all day > > long.70,75,even 80mph is not a problem,but not recommended.It,s > duel > > port. Sammie says stock lol, Sammie I had to ans > > were for you. > > Paul > > Smith > > > > 2009 Zone Tour 1999-2009 ,10 years of > > Trucking > > > > H.B.B > > T.C.B > > Transporters at the Point > > 6 October 9,10,and 11, 2009"Love > > all,trust a few,Do wrong to > > none" > > > > > > --- On Tue, 9/8/09, James Dwan <james_dwan_2000@xxxxxxxxx> > > > > wrote: > > > > > From: James Dwan <james_dwan_2000@xxxxxxxxx> > > > > > Subject: [tcb] What size engine for the '59? > > > To: tcb@xxxxxxxxxxxxx > > > Date: > > Tuesday, September 8, 2009, 7:46 PM > > > I just > > > got off the > > phone with Ronnie in AZ. I ordered my belly pans > > > and bumpers > > and we discussed the kind of engine I'd be > > > putting in the Bus. > > I told him I'd like to stay as close > > > to stock as possible. I > > plan on using the split case tranny > > > and was thinking of > > rebuilding the engine that came with it > > > (not > > original). > > > He said that a 36 horse with counter weighted crank > > and > > > increased compression ratio could be a nice runner. > > 3600 > > RPM > > > all day long. > > > The one in there now is a single > > port but that's all I > > > know about it. Even though I have a > > "Slow Moving > > > Vehicle" magnetic sticker for the back, the > > thought of > > > only going 50mph scares me. > > > > > Thoughts? > > > Thanks! > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > -- My Email Moniker http://www.findinternettv.com/Video,item,1570570433.aspx