« previous next »
Pages: [1]

Author Topic: 69 12 Bolt with 411 gears  (Read 3490 times)

69z28302

  • Member
  • ***
  • Posts: 388
    • View Profile
69 12 Bolt with 411 gears
« on: October 30, 2011, 04:16:02 AM »
I was going to change the gears in 69 and was wondering with a E-70-15 tire what RPM the engine would turn at 55 MPH and 70 MPH with a 4.11 ratio.

Thanks CRG

Mike
« Last Edit: October 30, 2011, 04:32:48 AM by 69z28302 »
Logged

JohnZ

  • CRG Member
  • *****
  • Posts: 4365
    • View Profile
Re: 69 12 Bolt with 411 gears
« Reply #1 on: October 30, 2011, 04:55:46 PM »
About 2900 at 55, and 3700 at 70 (E70-15 tire is 26.4" in diameter).
Logged
'69 Z/28
Fathom Green
CRG

MyRed67

  • Hero Member
  • *****
  • Posts: 805
  • SZZLN 67
    • View Profile
Re: 69 12 Bolt with 411 gears
« Reply #2 on: October 30, 2011, 07:59:36 PM »
JohnZ;  can you tell me what RPM's I can expect with 255R60 X 15 tires and 4:11 gears at 55 mph and 70 mph?  Thanks!
Logged
1967 Camaro  LOS  11A
Original Engine   Z - Tribute
Mike C.    NW - Illinois

tmodel66

  • Hero Member
  • *****
  • Posts: 1212
    • View Profile
Re: 69 12 Bolt with 411 gears
« Reply #3 on: October 30, 2011, 08:48:49 PM »
Around 2800 at 55 and 3550 at 70.  Diameter is 27.1
Logged
Daniel  
'69 SS 350/4 speed  Fathom Green--POP
Pages: [1]
« previous next »