Mirage with xr6 case

[bigbluechevy454]

Who have ran a mirage with a xr 6 case. How much difference was it

[bigbluechevy454]

I should have said river racer also i know people have had
them on quater masters. And everybody has done it with a allison

[stoker2001]

Galen always told me it is worth .3 in ET,but that does seems
http://www.youtube.com/watch?v=ioHkAf9S_Tc&feature=player_detailpage like a lot..i love the handling compared to sporty especially on deceleration.this is a race against a twin turbo jet with 18PSI boost last weeekend.i am running XR6 1.78 ratio with real short 22 clopper/drag cut by Rich at leading edge that is only good for 900-1000'

[Ira Tindale]

So ur running the small gear case? with 1.78?I thought the xr6 was a large case with 1.87. The xr4 was a 1.78 small case.

[stoker2001]

So ur running the small gear case? with 1.78?I thought the xr6 was a large case with 1.87. The xr4 was a 1.78 small case.
small case,you got it backwards i believe

[Ira Tindale]

small case,you got it backwards i believe

So that case is handling the torque well under that hard of acceleration? Thinking of trying that combo on my Quartermaster.

[tlwjkw]

So ur running the small gear case? with 1.78?I thought the xr6 was a large case with 1.87. The xr4 was a 1.78 small case.
Both are small. 6 is a "little" better. Later 6's (don't remember when it changed) are tha big case.........Little ones will give up sooner or later though with tadays stuff.

[Ira Tindale]

Both are small. 6 is a "little" better. Later 6's (don't remember when it changed) are tha big case.........They will give up sooner or later though with tadays stuff.

O.k. didnt know the xr6 ever ran a small case. Never seen one. Thank you.

[6Killer]

Later 6's had 4 3/4 gear case.

[stoker2001]

So that case is handling the torque well under that hard of acceleration? Thinking of trying that combo on my Quartermaster.
its modded with Mad EFi heavy duty carrier,ground all teeth off of reverse gear and tak welded cross pin on clutch slider.
i try not to ever shift it...
only use it for dragging with real short 22p chopper drag cut by Rick Junker

[David]

I blew up 3 small gearcases in 20 years with a lightly modified XR4, and I went out of my way to make them live. I think you could go through a few a lot faster with more power.

Unless you are racing, I wouldn't use the small case.

[TEXAS20225]

two styles of 1.78 case's first was on the XR4 then second genration( different bearings and case )came out on the later Xr4 then on to XR6 then on out the back door as not beefy enough for gear slammers and stabbing 400 ponies to it at one shot they unravel:eek: last xr6 were just plain old fishin mota cases

[stoker2001]

the big pinion brng 1.78s i believe has last 4 digits of casting #247C and will take some abuse,the others were wimpy pin brng same as inline6 and wont take much

[bigbluechevy454]

Galen always told me it is worth .3 in ET,but that does seems
http://www.youtube.com/watch?v=ioHkAf9S_Tc&feature=player_detailpage like a lot..i love the handling compared to sporty especially on deceleration.this is a race against a twin turbo jet with 18PSI boost last weeekend.i am running XR6 1.78 ratio with real short 22 clopper/drag cut by Rich at leading edge that is only good for 900-1000 (tel:900-1000)' how do u like richs drag cut. It seems to work better than a yamaha on my motor

[stoker2001]

IT works real good,but i havent compared to yamy 22
my yamy 24 gives up prob a 1.5 boatlength on holeshot to Rich's 22,but will pull to 1100-1200 feet to 112mph,where the 22 will only pull to 900-1000' at 102mph,again with 1.78