NEED : Richmond Pro Gear 4.56 Ratio Chrysler 8.75 742 Case

Murray4407 · 01-06-2020, 04:28 PM

Attention in the pits , Racer in need : Hunting for a Richmond Pro Gear 4.56 Ratio Chrysler 8.75 742 Case

Mike 281 987 4394

Hacksaw · 01-06-2020, 04:38 PM

Quote:

Originally Posted by Murray4407

Attention in the pits , Racer in need : Hunting for a Richmond Pro Gear 4.56 Ratio Chrysler 8.75 742 Case

Mike 281 987 4394

Never knew they made a Pro Gear for a Mopar 8 3/4 rear.

Murray4407 · 01-06-2020, 09:27 PM

Yessir, discontinued about 3 years ago per Richmond when I called this morning . This last one made it 5 years at 3400 lbs and 1.48 60’. Looks like I’m going to have to go Dana 60 tho now.

bdixon · 01-08-2020, 12:42 PM

Do you have the rearend backbraced?

GTX JOHN · 01-09-2020, 04:45 AM

I have only seem Pro 4.88's ratio in last 10 or 15 years for 742.

I broke last Pro gears in ten runs.

We have run regular gears last 10 years and always over
100 passes before they get loud and we take them out.

At 3400 Lbs our 340 Demons run 1.3x 60 Ft. times regularly.

My son has 456 / 488 /513 /538 Spools 742 Case for $750.00 Complete

He has gone to a Dana 60 now and they are extras. He says
Dana is 1 to 1 1/2 Hundred faster in his car = Maybe pinion angle.
He has around $3,000. in Dana.

01-06-2020, 04:28 PM	#1
Murray4407 Junior Member Join Date: Jun 2014 Posts: 12 Likes: 0 Liked 1 Time in 1 Post	NEED : Richmond Pro Gear 4.56 Ratio Chrysler 8.75 742 Case Attention in the pits , Racer in need : Hunting for a Richmond Pro Gear 4.56 Ratio Chrysler 8.75 742 Case Mike 281 987 4394

01-06-2020, 09:27 PM	#3
Murray4407 Junior Member Join Date: Jun 2014 Posts: 12 Likes: 0 Liked 1 Time in 1 Post	Re: NEED : Richmond Pro Gear 4.56 Ratio Chrysler 8.75 742 Ca Yessir, discontinued about 3 years ago per Richmond when I called this morning . This last one made it 5 years at 3400 lbs and 1.48 60’. Looks like I’m going to have to go Dana 60 tho now.

01-08-2020, 12:42 PM	#4
bdixon Member Join Date: Dec 2009 Location: mitchell sd Posts: 288 Likes: 4 Liked 15 Times in 7 Posts	Re: NEED : Richmond Pro Gear 4.56 Ratio Chrysler 8.75 742 Ca Do you have the rearend backbraced?

01-09-2020, 04:45 AM	#5
GTX JOHN VIP Member Join Date: Jun 2009 Location: Boulder City, Nevada 89005 Posts: 2,575 Likes: 2,292 Liked 2,097 Times in 600 Posts	Re: NEED : Richmond Pro Gear 4.56 Ratio Chrysler 8.75 742 Ca I have only seem Pro 4.88's ratio in last 10 or 15 years for 742. I broke last Pro gears in ten runs. We have run regular gears last 10 years and always over 100 passes before they get loud and we take them out. At 3400 Lbs our 340 Demons run 1.3x 60 Ft. times regularly. My son has 456 / 488 /513 /538 Spools 742 Case for $750.00 Complete He has gone to a Dana 60 now and they are extras. He says Dana is 1 to 1 1/2 Hundred faster in his car = Maybe pinion angle. He has around $3,000. in Dana. __________________ John Irving 741 Stock 741 Super Stock Last edited by GTX JOHN; 01-09-2020 at 06:44 PM.