Drag Pack info

manatee91 · 04-25-2003, 09:29 PM

Does anyone know a web site that I can go to for information on a drag pac for a 69 Mach I. I have purchased a 390 4speed car and was told it had the drag Pack. It has the 5 leaf spring, 9" traction lock rear. Not sure of the gear ratio but I can't go over 65 MPH on the interstate. It has the remote oil filter behing the front grill.

Thanks for your help!

hobgoblin351 · 04-26-2003, 12:32 PM

When you say it "can't go over 65mph" on the hwy, do you mean it's top speed is 65mph, or that it is just reving so high that you dont want to drive it at a sustained speed that high for fear of blowing something. The Drag Pack came with a high gear ratio,drag gears, ment for the track. Look on the data plate for axle code. With a limited slip V=3.91 gears, W=4.30, 3.91 gears are pretty steep for the highway, but 4.30"s forget it. I put 3.89's in mine not know better. I'm either going to bump them down to like 3.50's or get a tranny with overdrive.

manatee91 · 04-26-2003, 03:40 PM

The code on the plate says its a 3.25 ratio, but it seems higher to me.

Thanks

04-25-2003, 09:29 PM	#1
manatee91 Registered Member Join Date: Feb 2003 Location: Nashville, Tn Posts: 22	Drag Pack info Does anyone know a web site that I can go to for information on a drag pac for a 69 Mach I. I have purchased a 390 4speed car and was told it had the drag Pack. It has the 5 leaf spring, 9" traction lock rear. Not sure of the gear ratio but I can't go over 65 MPH on the interstate. It has the remote oil filter behing the front grill. Thanks for your help!

04-26-2003, 12:32 PM	#2
hobgoblin351 Registered Member Join Date: Sep 2002 Location: NYC Posts: 245	When you say it "can't go over 65mph" on the hwy, do you mean it's top speed is 65mph, or that it is just reving so high that you dont want to drive it at a sustained speed that high for fear of blowing something. The Drag Pack came with a high gear ratio,drag gears, ment for the track. Look on the data plate for axle code. With a limited slip V=3.91 gears, W=4.30, 3.91 gears are pretty steep for the highway, but 4.30"s forget it. I put 3.89's in mine not know better. I'm either going to bump them down to like 3.50's or get a tranny with overdrive. __________________ 1970 Stang Conv: en:Boss351 (balanced/blueprinted) mech cam(240*@.050/.540 lift) Scrw in studs/comp cams rllr rkr Mldn valves 2.19in 1.71ex ported polished cc'd hrdnd ex Keith Black FT pistons(10.25/1) Weiand Excellorator manifold Holley700 DP mech 2nds MSD 6 box and Dis Headers/2 1/2 inch duels tr: modified FMX re:9-inch/3.89 limited slip

04-26-2003, 03:40 PM	#3
manatee91 Registered Member Join Date: Feb 2003 Location: Nashville, Tn Posts: 22	The rpm's are too high. The code on the plate says its a 3.25 ratio, but it seems higher to me. Thanks

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