speed cal

spike spiegel · October 6th, 2008, 06:55 PM

can someone send me a chart so i can check how fast i should be going with my rpms at 2,500

I had a shop install a speedcal,at lower speeds my mph seems fine,but when i got on the highway,and im going 75-90(higher speeds)is seems 10mph to fast,the miles im putting on the car seem correct,

spike spiegel · October 6th, 2008, 07:01 PM

at 80 im at about 2,500 rpms ,i will double check when i get on the free way tonight

01gtMustang132 · October 6th, 2008, 07:03 PM

My car with 4.10's will run 2000 at 55 should be about the same or 200 lower...
At 70 I'm around 2500...

spike spiegel · October 7th, 2008, 02:20 AM

2400 at 80 mph is that normal

sjr56 · October 7th, 2008, 10:49 AM

That seems a little off. With 4.10s I run 2600rpm@70mph running a 315/40/17. I'm not positive but I would think your car should be approx. 2400@70 not 80.

spike spiegel · October 7th, 2008, 01:12 PM

Originally Posted by sjr56

That seems a little off. With 4.10s I run 2600rpm@70mph running a 315/40/17. I'm not positive but I would think your car should be approx. 2400@70 not 80.

thats what i think 2,im going to have the shop take a look this week cause i have to go there to get my trans flushed anyways,could it also be caused by my 18'' rims

October 6th, 2008, 06:55 PM	#1
spike spiegel Enthusiast Join Date: Apr 2008 Posts: 581 iTrader: 0 reviews	speed cal can someone send me a chart so i can check how fast i should be going with my rpms at 2,500 I had a shop install a speedcal,at lower speeds my mph seems fine,but when i got on the highway,and im going 75-90(higher speeds)is seems 10mph to fast,the miles im putting on the car seem correct, __________________ [2000 blue mustang gt vert 5spd,stalker bodykit,18'' cobra rims,lowered 2'',light bar,k&N cai,roush side exhaust,x pipe,pp 75mm tb & plenum Pro5.0 3:90 gears,Custom 91 octane SCT tune 2000 red VW jetta,auto stock Topless Mustang Club Member

October 6th, 2008, 07:01 PM	#2
spike spiegel Enthusiast Join Date: Apr 2008 Posts: 581 iTrader: 0 reviews	at 80 im at about 2,500 rpms ,i will double check when i get on the free way tonight __________________ [2000 blue mustang gt vert 5spd,stalker bodykit,18'' cobra rims,lowered 2'',light bar,k&N cai,roush side exhaust,x pipe,pp 75mm tb & plenum Pro5.0 3:90 gears,Custom 91 octane SCT tune 2000 red VW jetta,auto stock Topless Mustang Club Member

October 7th, 2008, 02:20 AM	#4
spike spiegel Enthusiast Join Date: Apr 2008 Posts: 581 iTrader: 0 reviews	2400 at 80 mph is that normal __________________ [2000 blue mustang gt vert 5spd,stalker bodykit,18'' cobra rims,lowered 2'',light bar,k&N cai,roush side exhaust,x pipe,pp 75mm tb & plenum Pro5.0 3:90 gears,Custom 91 octane SCT tune 2000 red VW jetta,auto stock Topless Mustang Club Member

October 7th, 2008, 10:49 AM	#5
sjr56 Regular 2001 MUSTANG GT VERT Join Date: May 2008 Location: WV Posts: 94 iTrader: 0 reviews	That seems a little off. With 4.10s I run 2600rpm@70mph running a 315/40/17. I'm not positive but I would think your car should be approx. 2400@70 not 80. __________________ ____________________________________ BBK O/R X, Flowmasters, MGW, Spec stage II, MM CC plates, MM Panhard bar, Eibach Pro kit, Bilsteins, Accufab plenum, Mac TB, K&N RAI, 4.10's, FR500's, Nittos.

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October 6th, 2008, 07:03 PM	#3
01gtMustang132 Regular 2001 Mustang GT 13.15@101 Join Date: Aug 2008 Posts: 134 iTrader: 0 reviews	My car with 4.10's will run 2000 at 55 should be about the same or 200 lower... At 70 I'm around 2500...

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