How much do the fiberglass bumpers run and where do you get them?
same here, i need to do the bumper stuff. i will be running a alumium intake and headers instead of manifolds. having alumium wheels help too. my old 15x7 magnum 500 weighed more than my 17x8 alumium wheels and my 17x11 alumiums on my street tires. also not to mention having 15x4's in the front with front runners.
Really the why is it most noticed off the rear:huh:
Front engined cars are naturally nose heavy (so much more with a big block). Removing weight from the front of the car brings the center of gravity more toward the center of the vehicle. This also brings the cars instant center (the point around which the car rotates) rearward improving both acceleration and handling. Moving the cars center to the middle and down is beneficial for the best handling. That's why cars handle better than trucks, all things being equal.
Oh I see now DUH
Ya the rubber cover actually has a steel moulded framing under it. The steel frame that bolts to the bracket is held to the rubber with 5 or 6 nuts. There are access holes in the frame to get to them but they tend to rust up really bad. Spray them down with blaster first and let them sit. I accidently broke one off before lubing them up.
i'm a 65 track / 35 street percent guy so i just plan on removing on and off the OEM bumper. during the race dates, i plan on putting the super light fiberglass bumper. then when i'm just going to cruise, i'm going to go ahead and use my jack to rebolt up the heavy poly bumper. pain in the ass but oh well.
.i'm hoping to pull down a super low 1.5xx or a high 1.4xx 60ft with the new motor so a little nose weight could help. i will however start with moving the battery to the back.While I am not trying to initiate a big block versus small block argument, I personally subscribe to the "build enough HP and/or torque approach" whereby the weight thing becomes a "non-player."
It has been reported that you can take approximately 140 pounds out of a 460 (via a 521/545/557 build with aluminum heads, intake and water pump). This will provide a motor weighing less than @600 pounds making in excess of 750HP (at the flywheel) and a nearly FLAT torque curve between 2500 RPM and 6500 RPM.
Quite frankly Olie, I don't think you need to take out any additional weight considering your stated use (bracket racing/cruising) of your Mustang, even with that iron-headed 521
Just my $.02
BT
