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I have 2:88 with 205/60-13 tires- runs 3000 rpms at 70 mph. Kirk
=20
From: Tigers <tigers-bounces@autox.team.net> On Behalf Of Joel Martin =
via Tigers
Sent: Saturday, November 16, 2019 8:03 AM
To: Tiger List Serve <tigers@autox.team.net>
Subject: [Tigers] Tiger Differential
=20
The manual shows that Tiger rear ends are: Salisbury hypoid =
=E2=80=984.HA=E2=80=99 with a 2.88 to 1 ratio. What does the 4.HA stand =
for?
My understanding is these are posi traction meaning both wheels are =
applying power.
Those of you with 2.88 rear ratio gears, wide ratio 4 speed top loader =
transmissions, what is your RPM=E2=80=99s in fourth at 50, 60,70 & 80 =
MPH? =20
Those of you running other rear end rations, other factors the same, =
what are your RPM=E2=80=99s at the same speed and what ratio?
I like to drive my cars and just got back from a 1,263 mile 6 day trip =
in my original owner 1973 MGB with 229,000 miles on the car. =20
Things to consider: 1966 MK1A with 289 HiPo motor with about 300 HP and =
estimated 9.4.1 compression
600 cfm 4 barrel Holley carburetor
Headers with 2.25=E2=80=9D exhaust
15=E2=80=9D wheels running 205\50 x 15 tires
Wide ratio top loader 4 speed transmission
Believe Salisbury posi rear end=20
Closed, open, locked, posi, ratios =E2=80=93 the list is endless. What =
I am looking for is a very streetable around town and on the highway =
posi rear end ratio that will work well with a good balance between =
acceleration for fun and highway cruising. I am not there yet. I have =
the acceleration for fun part in place but not the highway cruising (of =
course - avoid highways\interstate).
Data means a lot regarding RPM=E2=80=99s at speeds between 50 to 80 mph. =
Those of you who have switched ratios, please share your pros and cons.
Thank you for your input.
Regards
Joel Martin
=20
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link=3D"#0563C1" vlink=3D"#954F72"><div class=3DWordSection1><p =
class=3DMsoNormal>I have 2:88 with 205/60-13 tires- runs 3000 rpms at 70 =
mph.=C2=A0 Kirk<o:p></o:p></p><p =
class=3DMsoNormal><o:p> </o:p></p><div><div =
style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in'><p class=3DMsoNormal><b>From:</b> Tigers =
<tigers-bounces@autox.team.net> <b>On Behalf Of </b>Joel Martin =
via Tigers<br><b>Sent:</b> Saturday, November 16, 2019 8:03 =
AM<br><b>To:</b> Tiger List Serve =
<tigers@autox.team.net><br><b>Subject:</b> [Tigers] Tiger =
Differential<o:p></o:p></p></div></div><p =
class=3DMsoNormal><o:p> </o:p></p><div><div><div><p =
class=3Dydpe3a33268msonormal><span =
style=3D'font-size:12.0pt;font-family:"Garamond",serif'>The manual shows =
that Tiger rear ends are: Salisbury hypoid =E2=80=984.HA=E2=80=99 =
with a 2.88 to 1 ratio. What does the 4.HA stand =
for?<o:p></o:p></span></p><p class=3Dydpe3a33268msonormal><span =
style=3D'font-size:12.0pt;font-family:"Garamond",serif'>My understanding =
is these are posi traction meaning both wheels are applying =
power.<o:p></o:p></span></p><p class=3Dydpe3a33268msonormal><span =
style=3D'font-size:12.0pt;font-family:"Garamond",serif'>Those of you =
with 2.88 rear ratio gears, wide ratio 4 speed top loader transmissions, =
what is your RPM=E2=80=99s in fourth at 50, 60,70 & 80 MPH? =
<o:p></o:p></span></p><p class=3Dydpe3a33268msonormal><span =
style=3D'font-size:12.0pt;font-family:"Garamond",serif'>Those of you =
running other rear end rations, other factors the same, what are your =
RPM=E2=80=99s at the same speed and what ratio?<o:p></o:p></span></p><p =
class=3Dydpe3a33268msonormal><span =
style=3D'font-size:12.0pt;font-family:"Garamond",serif'>I like to drive =
my cars and just got back from a 1,263 mile 6 day trip in my original =
owner 1973 MGB with 229,000 miles on the car. =
<o:p></o:p></span></p><p class=3Dydpe3a33268msonormal><span =
style=3D'font-size:12.0pt;font-family:"Garamond",serif'>Things to =
consider: 1966 MK1A with 289 HiPo motor with about 300 HP and =
estimated 9.4.1 compression<o:p></o:p></span></p><p =
class=3Dydpe3a33268msonormal><span =
style=3D'font-size:12.0pt;font-family:"Garamond",serif'>600 cfm 4 barrel =
Holley carburetor<o:p></o:p></span></p><p =
class=3Dydpe3a33268msonormal><span =
style=3D'font-size:12.0pt;font-family:"Garamond",serif'>Headers with =
2.25=E2=80=9D exhaust<o:p></o:p></span></p><p =
class=3Dydpe3a33268msonormal><span =
style=3D'font-size:12.0pt;font-family:"Garamond",serif'>15=E2=80=9D =
wheels running 205\50 x 15 tires<o:p></o:p></span></p><p =
class=3Dydpe3a33268msonormal><span =
style=3D'font-size:12.0pt;font-family:"Garamond",serif'>Wide ratio top =
loader 4 speed transmission<o:p></o:p></span></p><p =
class=3Dydpe3a33268msonormal><span =
style=3D'font-size:12.0pt;font-family:"Garamond",serif'>Believe =
Salisbury posi rear end <o:p></o:p></span></p><p =
class=3Dydpe3a33268msonormal><span =
style=3D'font-size:12.0pt;font-family:"Garamond",serif'>Closed, open, =
locked, posi, ratios =E2=80=93 the list is endless. What I am =
looking for is a very streetable around town and on the highway posi =
rear end ratio that will work well with a good balance between =
acceleration for fun and highway cruising. I am not there =
yet. I have the acceleration for fun part in place but not the =
highway cruising (of course - avoid =
highways\interstate).<o:p></o:p></span></p><p =
class=3Dydpe3a33268msonormal><span =
style=3D'font-size:12.0pt;font-family:"Garamond",serif'>Data means a lot =
regarding RPM=E2=80=99s at speeds between 50 to 80 mph. Those of =
you who have switched ratios, please share your pros and =
cons.<o:p></o:p></span></p><p class=3Dydpe3a33268msonormal><span =
style=3D'font-size:12.0pt;font-family:"Garamond",serif'>Thank you for =
your input.<o:p></o:p></span></p><p class=3Dydpe3a33268msonormal><span =
style=3D'font-size:12.0pt;font-family:"Garamond",serif'>Regards<o:p></o:p=
></span></p><p class=3Dydpe3a33268msonormal><span =
style=3D'font-size:12.0pt;font-family:"Garamond",serif'>Joel =
Martin<o:p></o:p></span></p></div><p class=3DMsoNormal><span =
style=3D'font-size:12.0pt;font-family:"Garamond",serif'><o:p> </o:p>=
</span></p></div></div></div></body></html>
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