SS 4speed G-force or Jerico ?

scott gray · 02-15-2009, 10:45 PM

Any input on the pros and cons of these trannys. Thanks Scott

Bob Gullett · 02-15-2009, 11:10 PM

I've used a Jerico for 6 years with no problems.

Rod Greene · 02-16-2009, 12:04 AM

I still have the Narrow gear Jerico I bought in 1988. I couldn't begin to tell you how many runs it has on it. It has never let me down.

Rory McNeil · 02-16-2009, 01:12 PM

Scott, what type of S/S combo are you considering? Like Bob & Rod, I have been very happy with my Jerico DR4`s, obviously my 302 Mustang M/Stocker doesn`t abuse a trans like a heavier high HP combo, but I also have a Jerico in my 3100 lb bracket car, that runs 10.0`s at 132mph, and has 60 footed in the high 1.2`s, and in the 8 years since I switched from an automatic to the Jerico, I have yet to have broken anything in the trans.Of course an overly agressive clutch setup would be much harder on parts than the modern low pressure sintered iron clutches that most racers use these days.

scott gray · 02-16-2009, 02:20 PM

thanks for the info . Im running a 66 chevy2 SS/K been running this combo for a while now. I also have a 88 vintage jerico and a mid 90s model took over 500 runs in a mid ten second bracket car before the 88 trans broke. the newer one broke 3rd gear at about 25 runs in the chevy2. The only problems I have are generally with 3rd gear. I have a soft-loc and a advanced unit.

Glenn1066 · 02-16-2009, 09:02 PM

Scott I have a power glide I can sell you no more troubles.... yeah I know you like pullin them gears. See you in the spring, what races are you planning to run this year?

Glenn MacDonald

REGGIE WINKLES · 02-16-2009, 11:01 PM

Absolutely no problems with the Jerico and also excellent customer service. That's my two cents worth!!!

impstocker · 02-17-2009, 07:34 AM

I have made over 90 passes in my 4000 lb Chevy Impala big block Stocker with the Jerico, no problem. Also run a Soft-Lok clutch with 14lb flywheel. One of the things going for the G-Force is you are able to run a underdriven 4th gear if so inclined. I believe Rich Feldman with his Impala SS/O 283 car runs the underdriven 4 and final gear. He does that because you only want to go so low with your rearend gears, I think he has 6:17 gear in rear, with a big ole Chevy you don't want that pinoin gear too small!

Will Lamprecht #1427 68 Impala 396/325

Stick Racing · 02-17-2009, 10:59 AM

Most of the guys running the Pro Stick series uses the Jerico. There are quite a few G-Force transmissions being run also.

I have noticed the Jerico doesn't like a paddle clutch, (Yes, some guys still run that stuff.), and also needs the ball type bearing in the rear of the crank to support the input shaft close to the splines. I have broken several inputs until someone told me that rather important bit of information. Haven't broken anything since.

The G-Force-101 seems to hold up better in the heavy, higher horsepower/torque cars. The 'latest and greatest' GF-4 has what is commonly referred to as handcuffs between 2nd and 3rd gear to resist the mainshaft and cluster from spreading apart under load. If my memory serves me correct, the old Nash torque-tube transmissions had this feature. I have one of the GF-4's in my SS car. I'm impressed with this one.

The transmission choice is yours, however, the clutch is not. Use a soft-loc. Soft is fast and cuts down on broken parts.

______________________________

Andy Stone 1102 B/S 1112 SS/C

randy wilson · 02-17-2009, 11:36 AM

we run a g-force with a rag clutch. you can run a paddle clutch but be sure it is sprung center. they are right about the sintered iron disk, the best of both worlds. but we have not ran quicker with it. maybe we are doing something wrong.

02-15-2009, 11:10 PM	#2
Bob Gullett VIP Member Join Date: Mar 2002 Posts: 1,099 Likes: 56 Liked 461 Times in 111 Posts	Re: SS 4speed G-force or Jerico ? I've used a Jerico for 6 years with no problems. __________________ 68 Chevy11 327 F/S

02-16-2009, 12:04 AM	#3
Rod Greene Senior Member Join Date: Mar 2002 Location: TN Posts: 530 Likes: 413 Liked 241 Times in 81 Posts	Re: SS 4speed G-force or Jerico ? I still have the Narrow gear Jerico I bought in 1988. I couldn't begin to tell you how many runs it has on it. It has never let me down. __________________ Rod Greene Real men shift for them selves. Slowly working on TA Challenger for D,E/S and a 72 Challenger for SS/K, L as if I don't have enough other projects.

02-16-2009, 01:12 PM	#4
Rory McNeil VIP Member Join Date: Jun 2007 Location: from Vancouver BC Canada, now in Nova Scotia Posts: 1,291 Likes: 292 Liked 1,052 Times in 287 Posts	Re: SS 4speed G-force or Jerico ? Scott, what type of S/S combo are you considering? Like Bob & Rod, I have been very happy with my Jerico DR4`s, obviously my 302 Mustang M/Stocker doesn`t abuse a trans like a heavier high HP combo, but I also have a Jerico in my 3100 lb bracket car, that runs 10.0`s at 132mph, and has 60 footed in the high 1.2`s, and in the 8 years since I switched from an automatic to the Jerico, I have yet to have broken anything in the trans.Of course an overly agressive clutch setup would be much harder on parts than the modern low pressure sintered iron clutches that most racers use these days. __________________ NHRA 6390 STK M/S 85 Mustang

02-16-2009, 02:20 PM	#5
scott gray Junior Member Join Date: Jan 2009 Posts: 21 Likes: 0 Liked 27 Times in 4 Posts	Re: SS 4speed G-force or Jerico ? thanks for the info . Im running a 66 chevy2 SS/K been running this combo for a while now. I also have a 88 vintage jerico and a mid 90s model took over 500 runs in a mid ten second bracket car before the 88 trans broke. the newer one broke 3rd gear at about 25 runs in the chevy2. The only problems I have are generally with 3rd gear. I have a soft-loc and a advanced unit.

02-16-2009, 09:02 PM	#6
Glenn1066 Junior Member Join Date: Dec 2007 Posts: 69 Likes: 40 Liked 1 Time in 1 Post	Re: SS 4speed G-force or Jerico ? Scott I have a power glide I can sell you no more troubles.... yeah I know you like pullin them gears. See you in the spring, what races are you planning to run this year? Glenn MacDonald

02-15-2009, 10:45 PM	#1
scott gray Junior Member Join Date: Jan 2009 Posts: 21 Likes: 0 Liked 27 Times in 4 Posts	SS 4speed G-force or Jerico ? Any input on the pros and cons of these trannys. Thanks Scott

02-16-2009, 11:01 PM	#7
REGGIE WINKLES Member Join Date: Jun 2007 Location: St. Augustine, Fla. Posts: 229 Likes: 555 Liked 39 Times in 9 Posts	Re: SS 4speed G-force or Jerico ? Absolutely no problems with the Jerico and also excellent customer service. That's my two cents worth!!! __________________ Reggie Winkles 2650/Stock

02-17-2009, 07:34 AM	#8
impstocker Member Join Date: Dec 2008 Location: Wingdale, NY Posts: 302 Likes: 27 Liked 53 Times in 16 Posts	Re: SS 4speed G-force or Jerico ? I have made over 90 passes in my 4000 lb Chevy Impala big block Stocker with the Jerico, no problem. Also run a Soft-Lok clutch with 14lb flywheel. One of the things going for the G-Force is you are able to run a underdriven 4th gear if so inclined. I believe Rich Feldman with his Impala SS/O 283 car runs the underdriven 4 and final gear. He does that because you only want to go so low with your rearend gears, I think he has 6:17 gear in rear, with a big ole Chevy you don't want that pinoin gear too small! Will Lamprecht #1427 68 Impala 396/325

02-17-2009, 10:59 AM	#9
Stick Racing Member Join Date: Mar 2007 Posts: 169 Likes: 4 Liked 0 Times in 0 Posts	Re: SS 4speed G-force or Jerico ? Most of the guys running the Pro Stick series uses the Jerico. There are quite a few G-Force transmissions being run also. I have noticed the Jerico doesn't like a paddle clutch, (Yes, some guys still run that stuff.), and also needs the ball type bearing in the rear of the crank to support the input shaft close to the splines. I have broken several inputs until someone told me that rather important bit of information. Haven't broken anything since. The G-Force-101 seems to hold up better in the heavy, higher horsepower/torque cars. The 'latest and greatest' GF-4 has what is commonly referred to as handcuffs between 2nd and 3rd gear to resist the mainshaft and cluster from spreading apart under load. If my memory serves me correct, the old Nash torque-tube transmissions had this feature. I have one of the GF-4's in my SS car. I'm impressed with this one. The transmission choice is yours, however, the clutch is not. Use a soft-loc. Soft is fast and cuts down on broken parts. ______________________________ Andy Stone 1102 B/S 1112 SS/C

02-17-2009, 11:36 AM	#10
randy wilson Senior Member Join Date: Jan 2007 Location: N/A Posts: 882 Likes: 0 Liked 22 Times in 22 Posts	Re: SS 4speed G-force or Jerico ? we run a g-force with a rag clutch. you can run a paddle clutch but be sure it is sprung center. they are right about the sintered iron disk, the best of both worlds. but we have not ran quicker with it. maybe we are doing something wrong. __________________ don,t have one