Best Gear for my Combo?

89LXRagtop · 02-19-2002, 02:07 PM

Trying to decide between 3:73's or 4:11's..Combo in sig...Many thanks in advance!!

gtsr515 · 02-19-2002, 02:55 PM

To me this is a no-brainer.

If you plan alot of track use and sticky tires, go 4.10.

If it's a street warrior it's 3.73's.

DRASTiK · 02-19-2002, 03:27 PM

I agree with the above.

89LXRagtop · 02-20-2002, 09:42 AM

Thanks for the replies guys. the car won't see much track action, so I'll prob. go for 3:73's. On a totally unrelated note, can anybody tell me if my combo can benefit from bumping up the timing? Currently running 10 degrees btdc.. I've only had this new combo for a couple of days, and I'm not sure if I should bump the timing with a B cam. Thanks Again!!

89 ATI · 02-20-2002, 07:29 PM

I would bump the timing up to about 14*. I run that much timing on mine with no problems.

306 BLUE GT · 02-20-2002, 10:28 PM

I bumped my timing to 14 degrees on a bone stock GT and it ran fine...with your mods you could probably bump it higher than that and not have any trouble at all. I've heard of people bumping the timeing as high as 20 degrees. if it starts to ping or knock go back a degree or two.

89LXRagtop · 02-21-2002, 10:49 AM

Thanks for the replies guys..I'll bump it up to 14* and go from there.

02-19-2002, 02:07 PM	#1
89LXRagtop Registered Member Join Date: Dec 1999 Location: Farmingdale, NY Posts: 49	Best Gear for my Combo? Trying to decide between 3:73's or 4:11's..Combo in sig...Many thanks in advance!! __________________ 89 LX Notch, world class T-5z, 4:10's, FMS Aluminum DS, Hurst short throw shifter, Motorsport H/D clutch/cable/quadrant, Mac 1 5/8" Long Tubes, Mac Prochamber, Mac flowpath 2.5 cat back, Mac power pullies,TFS Twisted wedge heads, B303 cam, Trick Flow 1.6 Rockers, Comp Cams valve springs, Cobra intake, 255 lph, 30# injectors, Kirban AFPR, Vortech 73mm MAF, BBK 70mm TB, Mac CAI, Eibach Sportlines,Cervini 4" cowl, KB subs, Hotchkis C/C plates, MSD 6AL and more to come..... My Car Domain Pages

02-19-2002, 02:55 PM	#2
gtsr515 Registered Member Join Date: Nov 2001 Location: Sunny, Hot, Sebring, Florida Posts: 725	To me this is a no-brainer. If you plan alot of track use and sticky tires, go 4.10. If it's a street warrior it's 3.73's. __________________ Remember...2nd place is 1st place for losers!

02-20-2002, 09:42 AM	#4
89LXRagtop Registered Member Join Date: Dec 1999 Location: Farmingdale, NY Posts: 49	Thanks for the replies guys. the car won't see much track action, so I'll prob. go for 3:73's. On a totally unrelated note, can anybody tell me if my combo can benefit from bumping up the timing? Currently running 10 degrees btdc.. I've only had this new combo for a couple of days, and I'm not sure if I should bump the timing with a B cam. Thanks Again!! __________________ 89 LX Notch, world class T-5z, 4:10's, FMS Aluminum DS, Hurst short throw shifter, Motorsport H/D clutch/cable/quadrant, Mac 1 5/8" Long Tubes, Mac Prochamber, Mac flowpath 2.5 cat back, Mac power pullies,TFS Twisted wedge heads, B303 cam, Trick Flow 1.6 Rockers, Comp Cams valve springs, Cobra intake, 255 lph, 30# injectors, Kirban AFPR, Vortech 73mm MAF, BBK 70mm TB, Mac CAI, Eibach Sportlines,Cervini 4" cowl, KB subs, Hotchkis C/C plates, MSD 6AL and more to come..... My Car Domain Pages

02-20-2002, 07:29 PM	#5
89 ATI Registered Member Join Date: Sep 2000 Location: Lafayette, Indiana Posts: 120	I would bump the timing up to about 14*. I run that much timing on mine with no problems. __________________ 89 GT convertible, Kenny Brown level 5, Edelbrock performer, AFR 165's, Comp cams XE270HR, C&L 76, 24# inj, Crane 1.7's, 70mm BBK throttle body 298.2 hp 328.2 tq Mustang dyno "Our lady of blessed acceleration don't fail me now" Elwood Blues

02-20-2002, 10:28 PM	#6
306 BLUE GT Registered Member Join Date: Feb 2002 Location: New Jersey Posts: 15	I bumped my timing to 14 degrees on a bone stock GT and it ran fine...with your mods you could probably bump it higher than that and not have any trouble at all. I've heard of people bumping the timeing as high as 20 degrees. if it starts to ping or knock go back a degree or two. __________________ BMF 306ci 89 GT

02-19-2002, 03:27 PM	#3
DRASTiK Registered Member Join Date: May 2001 Location: Yuma, AZ Posts: 536	I agree with the above.

02-21-2002, 10:49 AM	#7
89LXRagtop Registered Member Join Date: Dec 1999 Location: Farmingdale, NY Posts: 49	Thanks for the replies guys..I'll bump it up to 14* and go from there. __________________ 89 LX Notch, world class T-5z, 4:10's, FMS Aluminum DS, Hurst short throw shifter, Motorsport H/D clutch/cable/quadrant, Mac 1 5/8" Long Tubes, Mac Prochamber, Mac flowpath 2.5 cat back, Mac power pullies,TFS Twisted wedge heads, B303 cam, Trick Flow 1.6 Rockers, Comp Cams valve springs, Cobra intake, 255 lph, 30# injectors, Kirban AFPR, Vortech 73mm MAF, BBK 70mm TB, Mac CAI, Eibach Sportlines,Cervini 4" cowl, KB subs, Hotchkis C/C plates, MSD 6AL and more to come..... My Car Domain Pages

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