Just ordered 4.56 and 05 diff from hardtop guy!
12-04-2005 | 09:09 AM
#81
Joined: Jul 2002
Posts: 77
Likes: 0
From: Houston
Originally Posted by wind,Dec 1 2005, 05:42 PM
Using the gear calculator in provided link, top speeds in mph for AP1 with 4.77 rear end (8900 rpm redline):
36.8
56.4
77.9
99.3
118.7
142.2
looks like the stock AP2 transmission is comparable to AP1 with 4.77 gears in 1st to 4th, and a bit taller in 5th and 6th. With the extra torque provided by the 2.2l motor, imo there is little need for gears in AP2.
36.8
56.4
77.9
99.3
118.7
142.2
looks like the stock AP2 transmission is comparable to AP1 with 4.77 gears in 1st to 4th, and a bit taller in 5th and 6th. With the extra torque provided by the 2.2l motor, imo there is little need for gears in AP2.
After further looking at the gear ratio differences between AP1 and AP2, I realized that the 1st thru 4th gear ratio are identical in both cars, but the 5th and 6th in the Ap2 are taller. However, the secondary reduction gear in the AP2 is 1.206 vs 1.16 in AP1. Therefore, the real end ratio in AP2 should be comparable to the AP1 with 4.26 gears (1.206/1.16*4.10=4.262).
Based on above finding, my earlier claim that the AP2 is comparable to AP1 with 4.77 rear end is false. The top speed in 1st-4th in stock AP2 and AP1+4.7 rear end are similar is due to the fact that the redline in the AP1 is 900rpm higher. I'm sorry for providing misinformation in my previous post. Hope this will clarify it.
12-04-2005 | 10:26 AM
#82
Registered User
Joined: Sep 2005
Posts: 6,790
Likes: 0
Originally Posted by wind,Dec 4 2005, 11:09 AM
Correction:
After further looking at the gear ratio differences between AP1 and AP2, I realized that the 1st thru 4th gear ratio are identical in both cars, but the 5th and 6th in the Ap2 are taller. However, the secondary reduction gear in the AP2 is 1.206 vs 1.16 in AP1. Therefore, the real end ratio in AP2 should be comparable to the AP1 with 4.26 gears (1.206/1.16*4.10=4.262).
Based on above finding, my earlier claim that the AP2 is comparable to AP1 with 4.77 rear end is false. The top speed in 1st-4th in stock AP2 and AP1+4.7 rear end are similar is due to the fact that the redline in the AP1 is 900rpm higher. I'm sorry for providing misinformation in my previous post. Hope this will clarify it.
After further looking at the gear ratio differences between AP1 and AP2, I realized that the 1st thru 4th gear ratio are identical in both cars, but the 5th and 6th in the Ap2 are taller. However, the secondary reduction gear in the AP2 is 1.206 vs 1.16 in AP1. Therefore, the real end ratio in AP2 should be comparable to the AP1 with 4.26 gears (1.206/1.16*4.10=4.262).
Based on above finding, my earlier claim that the AP2 is comparable to AP1 with 4.77 rear end is false. The top speed in 1st-4th in stock AP2 and AP1+4.7 rear end are similar is due to the fact that the redline in the AP1 is 900rpm higher. I'm sorry for providing misinformation in my previous post. Hope this will clarify it.
12-04-2005 | 04:07 PM
#83
Registered User
Joined: Jul 2002
Posts: 7,981
Likes: 10
From: mount airy
Originally Posted by wind,Dec 4 2005, 10:09 AM
Correction:
After further looking at the gear ratio differences between AP1 and AP2, I realized that the 1st thru 4th gear ratio are identical in both cars, but the 5th and 6th in the Ap2 are taller. However, the secondary reduction gear in the AP2 is 1.206 vs 1.16 in AP1. Therefore, the real end ratio in AP2 should be comparable to the AP1 with 4.26 gears (1.206/1.16*4.10=4.262).
Based on above finding, my earlier claim that the AP2 is comparable to AP1 with 4.77 rear end is false. The top speed in 1st-4th in stock AP2 and AP1+4.7 rear end are similar is due to the fact that the redline in the AP1 is 900rpm higher. I'm sorry for providing misinformation in my previous post. Hope this will clarify it.
After further looking at the gear ratio differences between AP1 and AP2, I realized that the 1st thru 4th gear ratio are identical in both cars, but the 5th and 6th in the Ap2 are taller. However, the secondary reduction gear in the AP2 is 1.206 vs 1.16 in AP1. Therefore, the real end ratio in AP2 should be comparable to the AP1 with 4.26 gears (1.206/1.16*4.10=4.262).
Based on above finding, my earlier claim that the AP2 is comparable to AP1 with 4.77 rear end is false. The top speed in 1st-4th in stock AP2 and AP1+4.7 rear end are similar is due to the fact that the redline in the AP1 is 900rpm higher. I'm sorry for providing misinformation in my previous post. Hope this will clarify it.
12-04-2005 | 05:52 PM
#84
Joined: Jul 2002
Posts: 77
Likes: 0
From: Houston
Originally Posted by '05 S2K SBM,Dec 4 2005, 01:26 PM
So, if you own an AP2, could you swap-out the AP2 secondary reduction gear and swap-in the AP1 secondary reduction gear?
12-06-2005 | 02:22 PM
#85
Registered User
Joined: Sep 2001
Posts: 9,792
Likes: 3
From: Milwaukee Area
Originally Posted by wind,Dec 4 2005, 12:09 PM
Correction:
After further looking at the gear ratio differences between AP1 and AP2, I realized that the 1st thru 4th gear ratio are identical in both cars, but the 5th and 6th in the Ap2 are taller. However, the secondary reduction gear in the AP2 is 1.206 vs 1.16 in AP1. Therefore, the real end ratio in AP2 should be comparable to the AP1 with 4.26 gears (1.206/1.16*4.10=4.262).
Based on above finding, my earlier claim that the AP2 is comparable to AP1 with 4.77 rear end is false. The top speed in 1st-4th in stock AP2 and AP1+4.7 rear end are similar is due to the fact that the redline in the AP1 is 900rpm higher. I'm sorry for providing misinformation in my previous post. Hope this will clarify it.
After further looking at the gear ratio differences between AP1 and AP2, I realized that the 1st thru 4th gear ratio are identical in both cars, but the 5th and 6th in the Ap2 are taller. However, the secondary reduction gear in the AP2 is 1.206 vs 1.16 in AP1. Therefore, the real end ratio in AP2 should be comparable to the AP1 with 4.26 gears (1.206/1.16*4.10=4.262).
Based on above finding, my earlier claim that the AP2 is comparable to AP1 with 4.77 rear end is false. The top speed in 1st-4th in stock AP2 and AP1+4.7 rear end are similar is due to the fact that the redline in the AP1 is 900rpm higher. I'm sorry for providing misinformation in my previous post. Hope this will clarify it.
one has a 9000rpm redline, while the other has 8000rpm.
12-06-2005 | 02:23 PM
#86
Registered User
Joined: Sep 2001
Posts: 9,792
Likes: 3
From: Milwaukee Area
Originally Posted by '05 S2K SBM,Dec 4 2005, 01:26 PM
So, if you own an AP2, could you swap-out the AP2 secondary reduction gear and swap-in the AP1 secondary reduction gear?
12-06-2005 | 03:38 PM
#87
Thread Starter
Registered User
Joined: Mar 2004
Posts: 10,418
Likes: 0
From: Seattle
it came in today!!!! the box was small but a lil heavy. since fed ex was so @!#@!@! late I've had to cancel my appt twice, now I have to wait until saturday for the install since I cant get off work early enough 
The box was in a crate and I'm sure some people slammed it a lil when putting it down , almost 80 pound small box. Hope this didnt damage the diff.
The box was in a crate and I'm sure some people slammed it a lil when putting it down , almost 80 pound small box. Hope this didnt damage the diff.
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