highway screamin'

stanger8172 · 02-09-2001, 09:07 AM

I have 2.73's and am very interested in getting 4.10's for my daily driver. At 65mph what will be my rpm's?
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'91 LX 5.0, T5,225/50/ZR 16's ported/polished/milled .030 stock heads, 1.6 rr, triple valve springs, hardened pushrods and guide plates, 40 weight oil, K&N, electric fans, A/C eliminator kit, glasspacks w/dumps

stanger8172 · 02-09-2001, 09:26 AM

By the way, I will only be making 25 mile trips at a time about 3 times a week. Thanx

Green92LX · 02-09-2001, 10:23 AM

Ballpark 3 grand

------------------
1992 5.0 LX, Edelbrock 6037 Heads, Cobra Intake,E-303, 1.6 Roller Rockers,65MM Holley TB, 75 MM Pro M Mass Air, 190 LPH FP w/ 24 lb injectors,BBK equal length shorties,offroad h-pipe,Mac Flowpath Mufflers, Pro 5.0, 3.73's,Motorsport "C" springs,welded subframe connectors, Ponies w/ 225/50 Nittos, 93 Cobra Spoiler

Daily driver: 89 Coupe with 205K plus, BBK shorties,offroad h-pipe,2-chamber flowmasters with dumps, cut and welded stock shifter...and it runs like a champ.

drudis · 02-09-2001, 10:58 AM

Math:

Part#1:
Diameter of tire (26")
times 3.1415
divided by 12 (inches/foot)
divided by 5280 (feet/mile)
Equals .0000xxx (some small number)

Part#2:
3000rpm x 60min/hour
divide by gear (like 3.73 or 3.55 or 4.10...)

Multiply part#1 times Part#2 = mph at 3000

Switch rpms, or tire diameter, or gears... and get new numbers.

------------------
Darius Rudis
Roadracer: Home built t-arm/panhard suspension powered by an S-trimmed motor :-)
My Mustang Page

lx mike · 02-09-2001, 08:47 PM

I have 3.73 and at 65 i am at 2100 so with the 4.10 gears you will be around 2300-2400 rpm's at 65 mph. go to the analyer and it will tell you any rpm for almost any mph you will run.

------------------
93-LX: 5 Speed, Flow's with H-Pipe, 3.73's Sub's and K&N.

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02-09-2001, 09:07 AM	#1
stanger8172 Registered Member Join Date: Nov 2000 Location: Milwaukee,Wisconsin Posts: 380	highway screamin' I have 2.73's and am very interested in getting 4.10's for my daily driver. At 65mph what will be my rpm's? ----------------- '91 LX 5.0, T5,225/50/ZR 16's ported/polished/milled .030 stock heads, 1.6 rr, triple valve springs, hardened pushrods and guide plates, 40 weight oil, K&N, electric fans, A/C eliminator kit, glasspacks w/dumps

02-09-2001, 09:26 AM	#2
stanger8172 Registered Member Join Date: Nov 2000 Location: Milwaukee,Wisconsin Posts: 380	By the way, I will only be making 25 mile trips at a time about 3 times a week. Thanx

02-09-2001, 10:23 AM	#3
Green92LX Registered Member Join Date: Jun 1999 Location: North Haven,CT Posts: 336	Ballpark 3 grand ------------------ 1992 5.0 LX, Edelbrock 6037 Heads, Cobra Intake,E-303, 1.6 Roller Rockers,65MM Holley TB, 75 MM Pro M Mass Air, 190 LPH FP w/ 24 lb injectors,BBK equal length shorties,offroad h-pipe,Mac Flowpath Mufflers, Pro 5.0, 3.73's,Motorsport "C" springs,welded subframe connectors, Ponies w/ 225/50 Nittos, 93 Cobra Spoiler Daily driver: 89 Coupe with 205K plus, BBK shorties,offroad h-pipe,2-chamber flowmasters with dumps, cut and welded stock shifter...and it runs like a champ.

02-09-2001, 10:58 AM	#4
drudis Moderator Join Date: Dec 1999 Location: Livonia, MI, USA Posts: 1,194	Math: Part#1: Diameter of tire (26") times 3.1415 divided by 12 (inches/foot) divided by 5280 (feet/mile) Equals .0000xxx (some small number) Part#2: 3000rpm x 60min/hour divide by gear (like 3.73 or 3.55 or 4.10...) Multiply part#1 times Part#2 = mph at 3000 Switch rpms, or tire diameter, or gears... and get new numbers. ------------------ Darius Rudis Roadracer: Home built t-arm/panhard suspension powered by an S-trimmed motor :-) My Mustang Page

02-09-2001, 08:47 PM	#5
lx mike Undescribable Join Date: Sep 1998 Location: Ft Myers Fla Posts: 1,539	I have 3.73 and at 65 i am at 2100 so with the 4.10 gears you will be around 2300-2400 rpm's at 65 mph. go to the analyer and it will tell you any rpm for almost any mph you will run. ------------------ 93-LX: 5 Speed, Flow's with H-Pipe, 3.73's Sub's and K&N.