I've recently installed 4.10's and I think I'm switching back to the 3.55's. I could almost swear I lost take off power which should be impossible.
My shop suggested that I may have already reached the limit of what my L can do, comments?


------------------
2000 Lightning (Red)
SHM Chip and Mass Air
SHM Blower Pulley
378.2 @ 5100 HP
445.0 @ 3600 ft-lb (before pulley)
Kill Count = 28 suckers picking rubber off their teeth.
SHM powered - www.seanhylandmotorsport.com

'99 Cobra - SHM engine, Vortech supercharger, and to many other mods that my wife don't know about.

 

Moses

I have more gear than you and it made the truck alot slower due to traction limitations with the stock tires. On street tires you may be slower. Send your chip back to SHM and have him take some timing out at WOT below 3200rpm..

 

Moses- Dan here,
Have you postd before and after times in the 1/4.
I had both the 3.55s turned 13.91 @98.16 mph.on F1s.
Swithced to 4.10s turned 14.1 @ 96mph. Reason being the computer was compensating for 3.55 gears and short shifting the trans. But launch was stronger. Ordered PSP 4-way chip compensated for 4.10s went 13.39 @102?? on F1s. Gp fiqure. I'd never get rid of mine. Just for the shere acceleration of them. IMHO
I'd say get your chip recalibrated for the 4.10s. If you still want to get rid of them, you could probably auction them off, as as many people have contacted me for gears and posted looking for same.
Hope this helps!!


------------------
Dan

---------------------
99.5 Vermillian Red SVT Born on date:
8/24/99 # 2094
N.L.O.C # 461
F1 Hood
Full Bassani Exhaust
PSP TOTALLY ENHANCED-4-way chip,filter
Level 10 Trans Kit
4.10 FMS Gears
JohnnyLightning Ram Air
Beltech 2" Drop
And the list keeps growing!!!
Best STOCK 14.22 @ 98.36 in 90+ degree weather
BEST et w/ mods to date:
13.39 @ 102.49. on F1's in 90 + degree weather
13.23 @103.98 on M/T E.T's w/1.91 60 ft in 89'degree weather

THANKS SAL!!!!!!

"TEAM PSP"-Fla. Chapter

 

If you want the right performance, calibate your computer like our VIDEOMAN says...

 

Videoman tells it like it is. Until your chip is compensated for the 4.10s you will lose power because it is reading drive shaft speed and shifting way too early. Once you are properly calibrated you will never dream of going back to the 3.55s.

------------------
I'd rather have a bottle in front of me than a frontal lobotomy.

'84 Alan Record Carbonio, Aerospoke wheels, Campy brakes.
'00 SVT Lightning, silver, G-tech Pro, JBA headers, cam bolts, 4.10 gears
(soon, Swanson's chip and MAF, Cal-tracs)
2001 Kevlacat 2400, twin 115 Evinrude FICHT, Raytheon VHF, Radar, and Sounder/DGPS chartplotter

gmvye@pacbell.net

 

Yeah I'd take them out, send to me at a good price if they are true F.M.S. gears

Best todate: 12.89@107.62

------------------
JIGAWATT SVT#2698
N.L.O.C. Member
KSP 4" Filter Kit
4:10's
Bassani kit
TransGo shift kit
AIM 2 inch drop shackle

 

I had better times by 3/10ths with 4.10's. Must get your chip re-calibrated. Installing Pro Torque Convertor (2400 stall) this weekend, and new transmission pan (thank you Spiro). Will let you guys know how it works out.

------------------
1999 Lightning Black, PSP Chip, Bassani(Full), PSP Filter,
4:10 Downs, ARE, Bedrug,Goodrich T/A Drag Radials
13.25/101 idg@home.com

SVT# 2917 DOB 7-26-99
Northern CA, 98 Gold Lexus GS 400, 67 Pearl White Nova

 

Calightnin,

I see you bought the Down's gears, are they F.M.S.? did they come with a shim kit?

Kevin

 

Thanks guys.

------------------
2000 Lightning (Red)
SHM Chip and Mass Air
SHM Blower Pulley
378.2 @ 5100 HP
445.0 @ 3600 ft-lb (before pulley)
Kill Count = 28 suckers picking rubber off their teeth.
SHM powered - www.seanhylandmotorsport.com

'99 Cobra - SHM engine, Vortech supercharger, and to many other mods that my wife don't know about.

 

Jigawatt...yes they are F.M.S. came with shims and the Pinion Nut. They also claimed that they (Downs)had them hardened beyond FMS. They were expensive, but the only available gears I could find at the time. Quiet, no problems.

 

Hey Guys-Dan here. I heard a little RUMOR, at the track tonight that FMS Gears were made by PRESION GEAR.!!!! And were already hardened.
Also "How does DOWNS FORD get away with selling FMS GEARS (retail $199.00) and charge approx. $325 for a shim kit and a nut??????
D*M, and I thought the OIL COMPANYS were Thiefs!!!!!
------------------
Dan

---------------------
99.5 Vermillian Red SVT Born on date:
8/24/99 # 2094
N.L.O.C # 461
F1 Hood
Full Bassani Exhaust
PSP TOTALLY ENHANCED-4-way chip,filter
Level 10 Trans Kit
4.10 FMS Gears
JohnnyLightning Ram Air
Beltech 2" Drop
And the list keeps growing!!!
Best STOCK 14.22 @ 98.36 in 90+ degree weather
BEST et w/ mods to date:
13.39 @ 102.49. on F1's in 90 + degree weather
13.23 @103.98 on M/T E.T's w/1.91 60 ft in 89'degree weather

THANKS SAL!!!!!!

"TEAM PSP"-Fla. Chapter







[This message has been edited by videoman (edited 08-04-2000).]

 

I heard that the 4.10 gears and the small blower pulley is not a good idea. Some have lost performance with this combo because the blower seems to be maxed out at higher rpms with the low gears. I'm not an expert, just passing on info. HTH

 

Here's what we decided had to be done, see if it works.
Ok, so got the SHM MAF, chip, pulley, and 4.10's. This application seems maxed out.
Going to change the headers and exhaust, and maybe TB (even though the TB might be pushing it on that end). Then re-tuning the chip for all the modifications (if needed).
Should theoretically be pushing the 400+HP marker.
The way we got it figured, with the 4.10's and the amount of HP, should be able to get this monster into the 12's. Time will tell.
Cheers.


------------------
2000 Lightning (Red)
SHM Chip and Mass Air
SHM Blower Pulley
378.2 @ 5100 HP
445.0 @ 3600 ft-lb (before pulley)
Kill Count = 28 suckers picking rubber off their teeth.
SHM powered - www.seanhylandmotorsport.com

'99 Cobra - SHM engine, Vortech supercharger, and to many other mods that my wife don't know about.