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Thread: Gears for Rearend
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Shefron
Newbie
Posts: 2
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posted January 25, 2003 11:34 PM |
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Gears for Rearend
I was wondering what are the gears in the rearend of a 87 Mazda B2000 extend cab. The truck came with a 5 speed manual still I swap in a V8. But I seem to be getting 6 miles to the gallon and we are thinking its because of the gearing.
perferable
1. Where can I get some taller gears for the rearend?
or
2. What is a rearend that will fit in from another vehicle that could handle a stock V8 and needs only minor mods to fit.
Save my gas milage....
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87 Mazda B2000 Cab plus
chevy 350 V8
4-Speed Saginaw
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dodge48
1st Gear
They call me the "Anti-Honda"
Posts: 41
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posted February 12, 2003 04:57 PM |
 Edited By: dodge48 on 13 Feb 2003 16:55 |
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I cant be sure but it might be 4:11 gears. if your running a 4 speed non overdrive with the 4:ll gears, well, theres your problem. thats probably a 6 lug pattern right? if you want to do a swap on it to put a chevy s-10 rear end in it and front in conversion to an s-10 taht would be good. lot of trouble though. It would allow you to have drop spindles and more wheel choices. Just depends on how far you want to go.
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Jeff20B
Moderator
Posts: 661
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posted February 12, 2003 10:08 PM |
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What is your RPM at 60MPH or 100KMH?
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'74 REPU
'76 Cosmo
'77 MG Midget 13B
'81 RX-7
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roaddancer
Hauling
Posts: 127
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posted February 13, 2003 07:23 PM |
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If I remember correctly, the mazda rearend was a third member type, similar to most ford rear wheel drives. It is probably outsourced by mazda from a company in japan (or even here!)that makes lots of rearends. Check with your knowledgeable wrecking yard people and see if they have a cross fit book. You might get lucky!
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Jeff20B
Moderator
Posts: 661
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posted February 13, 2003 09:27 PM |
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People have said the REPU diff is like the common ford 9 inch. They look similar, but I've never compared them side by side.
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'74 REPU
'76 Cosmo
'77 MG Midget 13B
'81 RX-7
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shefron
Newbie
Posts: 2
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posted February 14, 2003 01:19 AM |
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Well I have found the mod for the saginaw 4 speed that I have in it currently.
http://www.chevytrucks.org/tech/overdrive.htm
I'm hoping this will solve the rpm problem since it almost makes it a 8 speed but first I would like to find more info on the mod.
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dodge48
1st Gear
They call me the "Anti-Honda"
Posts: 41
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posted February 14, 2003 07:43 AM |
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wow that mod that guy did was really, really smart. i cant beileve no one had thought of that before. That opens up some new possibilites for using an older 4 speed instead of trying to find a new overdrive like a t5 or t56.
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Always remember in life: If at first you don’t succeeded, sky diving isn't for you.
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