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Gearbox <-> Engine Guide

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Hi folks, A lot of people asking "what gearbox do I have?"

Well, to help a bit , here is my gearbox bible to throw a little light on the subject.

Firstly, the gearbox type is stamped into the gearbox near the gear stick linkage. This is a gearbox from the rear.



To find your code, you need to look down here :



So, once you found your code, what do you have ?

Well, here are the available gearboxes, and the Opels/Vauxhall engines they were fitted to.

Please note, there are so many types that I have only listed Astra Mk3 combinations

There are also 2 main variants to each box type. WR and CR
CR is the "short" box, meaning, the gears are closer together allowing for better acceleration through the gears
WR is a so called "economy" box, with the gears slightly further apart, and a stretched top gear. This means it is not as quick off the mark as the CR brother, but at top speeds the engine revs much lower, hence - economy.


F10
C14SE

F13
17D, 17DR, X17DTL
14NV, 14SE, C14NZ, C14SE, X14NZ, X14XE, 16NZR, C16SE, C16NZ, X16SZ, X16SZR

F15
X17DTL
C14SE, X14XE, 16NZR, C16NZ, C16SE, X16SZ, X16XEL

F16
17DT
C18XE, C18NZ, C20NE,

F17/F17+
X17DTL
14SE, C14SE, X14XE, X16XEL, 16NZR, C16NZ, X16SZ, X16SZR

F18/F18+
17DT, X17DT
18SE, C18NZ, C18SEL, C18XE, C18XEL, X18XE, C20NE, C20XE, X20XEV

F20
C20XE

F23
Not fitted to Mk3

F25/F35
Not fitted to Mk3

F28
6 Speed box found on Calibra turbo 4x4 for example
Not fitted to Mk3
 
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nice one mate... but uve missed out the f10 box.. ive got a c14se engine n its gt a f10 on it
 
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Hai lefthooker which is the engine which ou have shown in the picture.
 
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re gear box for x16xe 1.6, 16 valve

i am currently building a x16xe engine 1600 and am looking for any ideas as to the best gearbox to fit, that would give me decent ratios, i wont be getting out of third gear as its for auto cross, so was wondering if the x14xe gearbox would be ok to use if not what should i be using
 
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depends on what ya want, a short box for acceleration or a longer box to hold the revs. maybe something like an F13? they where also fitted to corsas
 

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