Jerico ?

mr bruce · #1 (**permalink**) 01-02-2002, 06:57 PM

I ain't playin' games, figured just go with the best. I see used ones with prices all over the place.Anybody got any real experience with them? Spotter Joe?This is for a track car.

65cobra427 · #2 (**permalink**) 01-02-2002, 08:06 PM

Mr "B",

We use them in the race cars for 2 main reasons... 1) strength 2) durability... They are particulary great for the twisties cuz you don't need to clutch while shifting... The Jerrico was invented by a guy that had lost the use of his left leg & needed a tranny that could be shifted without a clutch... You gotta figure that you aren't gonna have the TQ of a 'Cup car so the thing oughta last a lifetime... Got a friend that retired a couple of years ago that may have one or two or least can get you a deal... I put in a call, but got his VM... Will get back to you...

spotterjoe

Dean Hornbacher · #3 (**permalink**) 01-02-2002, 08:50 PM

The best word to describe a Jerico is 'Awsome'. I have one in my Midestates. The only problem I had was in the tunnel area. Due to the beey size in the shifter area , the Hurst comp+ shifter requires more side clearance (even though it is basicly a top-loader ) . One other thing is that being a race bred trans it has straight cut gears, makes for a bit of gear noise. love it! Bought my direct from Jerico , they are all made as ordered, not sitting on the shelf waiting. Now is the longest wait on a order, Cup teams and other classes get priority in the off season. Also if you are going to run Hi horse power why not go with a trans ment for 700 plus HP....................

cobrashoch · #4 (**permalink**) 01-02-2002, 09:13 PM

mr bruce- You also might consider a G-force tranny if you are looking to buy a trans new. Craig-aka 750HP and I have talked at ends about this possibility. Dave Salkowski aka Dsalkowski on this board is running one with MUCH success. They are rated to 1300 hp and are true clutchless trannys. A e-mail to 750HP will draw a glowing response I'd bet.
As for the Jerico, they are a mixed bag I have seen. They are dog ringed and have square cut teeth, have the best warranty In the business but I have seen mixed failure rates on the road race stuff. The 4/sp road race peice looks really good on paper though I know of no one that has used one in a cobra. (or in your case a altra light car). The 4/sp NHRA boxes are VERY GOOD though thru about 700 lbs of torque. I wouldn't consider the 5/sp box's either. Better to go with 4 gears and the right ratios, that are optional anyway.
5/k $$$ seems to be the cost going both ways by the time you sort it all out, Re: used and rebuilt vs new. Maybe you can steal a Gerico to as they are much more common than the new G -force stuff. Don't pass on at least looking at G-force. It's the real deal.

www.gforcetransmissions.com

cobrashock

750hp · #5 (**permalink**) 01-03-2002, 07:13 AM

Ron, you beat me to it!!!

All I'll add is that - in drag racing circles at least - I know personally of a number of guys that gave up on their Jericos after breaking second and third gears repeatedly. They haven't looked back after going with G-Force. I really didn't want to have to spend the $5K unnecessarily, so I've spoken to guys about Richmond / Doug Nash, Liberty Toploaders, Holingers, Hewland, Quaife, Getrag. The drag racing guys will universally rate G-Force as well above Jerico for quality and strength. The road racing guys have to spend $10K to $20K to get a similar shift quality out of a Holinger/Quaife/Hewland. The G-Force is rated to handle a higher torque figure than any trans I'm aware of (short of a Lenco - which you cannot downshift...)

To be fair, I did read an article from a year or two ago where Billy Glidden claimed that he didn't like the G-Force gearboxes. So there, you can't say I'm being one-sided now

mr bruce · #6 (**permalink**) 01-03-2002, 07:26 AM

Thanks for the mention of the G-Force, but I'm workin' the dude on a parts swap for the Jerico. Looking for some feedback on that trans.

RICK LAKE · #7 (**permalink**) 01-03-2002, 11:27 PM

Hi Mr. Bruce. My two cents. I have a six speed richmond in my car and have a shifting problem under full throttle. The trans is only rated for 450 hp and 450 tor. Billy glidden is using a liberty trans 5 sp in his car with some old style slipper clutches from his dads pro stock days of racing. I am going to a G-Force trans myself because of the multi gears that can be used in it. Dave S has a great car and uses a G-Force with mid 3 something gears and the car pulls hard in all gears. Stacy Pendergas used a T-rex 4 speed in his cobra and with his car it works also very good. If you break a G-force

they have all the parts in stock and will over night you the parts. To pull the trans apart all you need is snap ring pliers, basic tools, and RTV sealant to do the repairs. I think that the shifter comes with that trans as part of the price. You can also put a trans cooler on it to help in road racing. I am not a big fan of automatics but they have their go points also George Andreson has one in his car and it dones all the races at Run@Gun with no failures A C6 trans is very strong. Good luck with your choice, Paying more Now may save you more later. Rick Lake P.S. If you call G-Force and tell them what your car has in it motor,gears,weight, and usage they will custom build on for a one of a kind car Good Luck

Cal Metal · #8 (**permalink**) 01-04-2002, 01:24 PM

Bruce:

Check with David Kee. He has just taken on Jerico in addition to his TL duties.

65cobra427 · #9 (**permalink**) 01-07-2002, 10:11 PM

One of the Winston West racers out here has a used "rebuilt" Jerrico for sale... Need to check with him re: price... Its at the top end of the used market, $2300... I'll call him 'morrow & see what I can do... The ratios are 1.99:1, 1.49:1, 1.04:1, 1.0:1... A lot of the racers use 1.04:1 as a third gear with 4th gear as a pseudo overdrive... Let me know if you are interested before I call...

Ant · #10 (**permalink**) 08-01-2005, 07:10 AM

I gather from reading the posts on CC that G-force GF-5R is maybe a bit stronger, in HD Drag racing than a Jerico RR5, and both of these boxes are rated at around 1300bhp!

Jerico seem to be much much more commonly used in all forms of racing especially Drag racing and road racing.
I have read the GF-5R isnt the smoothest shifting for a race trans, and the Jerico is butter smooth. The five speed Jerico is rated higher than a Jerico four speed!

I guess one bonus is even I could easily replace gears and dog rings in either a GF-5R or RR5 trans, as they appear to be much easier than a Toploader to work on!

scottj · #11 (**permalink**) 08-01-2005, 08:49 AM

I've got the Long shifter on mine and as mentioned, there is not enough room in the tunnel. I had to make some billet shift arms that offset the rods inward instead of outward. I also turned all the bolt heads on the lathe to be thinner. Because of the taper of the tunnel I had to make a set of bent shift rods and different thickness spacers for the shifter to trans mounting.

I run it with a Quarter Master 7-1/4" triple disc and a reverse mount starter bellhousing. Half of the reason for the exceptionally quick downshifting is because of the lightweight button clutch. The whole clutch and flywheel assembly weights only 15 lbs and rpm's increase instantly for matching revs on downshifts. Compaired to a Richmond RR5, Lakewood bellhousing, aluminum flywheel, and a 10-1/2" single disc, I saved 95.5 lbs.

From a reliability standpoint as well as a performance standpoint, this package has performed flawlessly. I've got it behind 640hp-600ft/lbs in a 2650lb car. I also use it on the street fairly frequently and even with the button clutch there are none of the issues I've been warned about... as long as my technique is spot on.
Scott

Ant · #12 (**permalink**) 08-01-2005, 05:18 PM

Scott

Are you running the five speed Jerico, and I guess your engine is a stroked windsor, and if so what type of bellhousing are you running, as I am trying to get something lighter than a Lakewood?

I will be running similar HP in a all aluminium package so weight is a reasonably important goal!

scottj · #13 (**permalink**) 08-01-2005, 05:40 PM

Ant-

I've got a 4 speed. The bellhousing is a Quarter Master for the reverse mount starter, it's 11 lbs. This link is to the 5.5" clutch package but, they make a 7.25 only it's not on their site. http://www.quartermasterusa.com/content/product.asp

Yes they make it for the Windsor but, I'm running either a 434 cid iron Dart/Rocket block Chevy SB(640hp/600) or an all aluminum Dart 18* Chevy SB (780hp/690)... sorry

.

Scott

Ant · #14 (**permalink**) 08-01-2005, 11:44 PM

Scott,

Thanks for your information I dont see a problem with running an alloy or magnesium bellhousing with my flexplate and Tilton Cerametallic clutch, I could make a lightweight blanket around it out of kevlar if necessary, but I dont think these flexplates fly to bit that much, and I wont be drag racing with it!

Man thats some big hp you are running, but I guess like me you want some action when you hit the track!