Running a 4.77 R&P

Post by **CBR_TOY** » Fri Aug 28, 2009 10:36 am

is it possible to just bolt up and go or is there more involved?

i've heard about spacers and other things such as.....

any help appreciated

mexellent · Post by **mexellent** » Fri Aug 28, 2009 11:23 am

Thats a really good question. I talked to a guy who set up axles for midget cars (they take our axles and modify them). He was saying he couldnt imagine a 4.77 R&P because he thought the 4.3 was already really aggressive.

Post by **CBR_TOY** » Fri Aug 28, 2009 12:30 pm

the 4.77 is pretty common for the 86 crowd....

a 5.1 or 5.3 would be aggressive in my opinion but good luck finding one of those

ga_goosh · Post by **ga_goosh** » Fri Aug 28, 2009 2:13 pm

yes you have to reshim the pinion gear to set your back lash since you have to remove it from the pumpkin carier. might as well replace the crush sleve while your at it or do a complete rebuild. i wouldnt want to do it again if my bearings went out.

Post by **dr.occa** » Fri Aug 28, 2009 10:22 pm

what sean (aka ga_goosh) said.

when you introduce a new ring & pinion, you've introduced new components that have seen no load. plus, if you see the shims for the crush sleeves, you'll see that each ring & pinion will vary by that much, one from another. your present ring & pinion will have worn together at present backlash and pre-load.

you'll want to have the diff re-set up so your investment won't have been in vain. if you're going with weir performance's 4.77 r&p go ahead and add their awesome crush (not so crushable like oem!!!) sleeve and shim set too.

i plan to pick up their r&p as soon as things ease up with what i'm currently trying to get off the launching pad.

Post by **CBR_TOY** » Sat Aug 29, 2009 7:38 pm

i wanna get DCPerformances 4.77 r&p setup.... but i'm not sure if they have the crush washers

i do know they have the spacer though

Post by **dr.occa** » Sat Aug 29, 2009 8:16 pm

CBR_TOY wrote:i wanna get DCPerformances 4.77 r&p setup.... but i'm not sure if they have the crush washers

i do know they have the spacer though

the shims come with the "crush" sleeve.

nexus4400 · Post by **nexus4400** » Wed Sep 02, 2009 7:32 pm

I have a DCPerformance 4.77 R&P. Great acceleration, horrible top end. 4000 RPM in 5th gear = 62 MPH (measured by my GPS).

85levin · Post by **85levin** » Sun Nov 22, 2009 7:17 pm

the solid pinion spacer is a must. cheap insurance, i have seen diffs fail because of this. keep in mind that your speedo will be off. you need to change out the plastic gear in your trans according to the tire size.

Post by **CBR_TOY** » Sun Nov 22, 2009 8:30 pm

not too worried about speedo as it's just a drift car.....

still waiting to get this due to no job :D

mooreofit · Post by **mooreofit** » Sun Nov 22, 2009 10:20 pm

what do you do? maybe i can ask around.

Post by **CBR_TOY** » Mon Nov 23, 2009 12:48 am

weld, waterjet, automotive, anything that pays........

mooreofit · Post by **mooreofit** » Mon Nov 23, 2009 9:13 am

well brake check is always hiring\fred hass toyota in spring is hiring right now. i can ask around about a welding job i assume you are certified? all tig positions? theres a couple machine shops out in cypress that might be hiring.ill have to ask.

Post by **CBR_TOY** » Mon Nov 23, 2009 1:20 pm

not certified and tig is my weak point...... would rather not weld

mooreofit · Post by **mooreofit** » Mon Nov 23, 2009 1:33 pm

brake check hires at 10 bucks an hour for a general tech and after a month or so you go to commision tech which is 10 percent on brakes and front end 15 percent on everything else. average c-tech weekly is around $6-700.they hire with no u.a. just gotta have tools.they are always hiring.ntb is also hiring and they pay better than brake check.my little brothers buddy's a service writer at fred haas and tells me they are hiring also.

also if you hit up craigslist and houstonchronicle.com there seems to be a bunch of tech jobs in the auto section.