Originally Posted by jaybread

All European cars are limited to 155mph per agreement with the EU. (this is for cars that can reach those speeds)

Tire speed ratings drive the limiters, besides political issues.

For example, the Japanese motorcycle companies all agreed to govern their high performance bikes to less than 200mph. This was in response to the media going crazy over "killer" sportbikes that could go over 200mph!! Now, they are limited to around 189, kill just as many people, but since they don't go over 200 the media has lost most of it's interest.

The only American car from a major company I know of with no limiter is the Corvette, but maybe the Viper also.

I agree with many other posts, if you are hitting the limiter in a Super Duty then you should re-think your driving habits. Not a good plan for survival.

Originally Posted by lew52

....Yes your right the 60s & 70s cars were alot of fun . I had a bunch of them & love em all.. Mopars . chevys . fords ..There wasn't to many boss 429s runing around but a few. More 428 cjs . But they all ran good mostley 14 sec cars stock but with some work ran alot better . I don't think a stock boss 429 will shave off 3 sec in the 1/4 mile with tires & timing . The tires to day are much better but back then we had what we had . So everything was pretty much the same traction wise. I ran a big block nova 396 that would hook with L 60 15s.. This is back in 73 though . Lew

Originally Posted by phillips91

youd be surprised what a set of tires will do for a car. just for comparisons sake i took my 86 mustang to the track with 225/60 street tires on it and i was in 4th gear before i hooked up. hadnt even made it to the 1/8 mile mark yet either. i was a good 5 or 6 seconds slower than with my drag radials. and those tires were wider than what the boss 9 came with stock. ive got a set of stock size goodyear polyglass tires on my 69 ltd and they look like bicycle tires compared to what comes on todays sports cars lol. those stock 60's tires didnt hold up too good on the skid pad tests either. skinny tires break free faster than the big meat the current gt 500 has. 14 and 15 inch rims and tires with huge sidewalls break free much faster than 18 inch rims and 2 inch sidewalls.

Originally Posted by lew52

I like the 15in wheel , more sidewall flex better traction . Lew

Originally Posted by SuperDutyScaler

well i had my truck (pic in my avaitor) when i first got my superchip up to 125mph thanks to my cousin. hes a cop and we used his rador one afternoon, dont tell. it was cool but it fing scared me to death so now the governor is back on at 105mph. but i rarely go over 90 any more.

Originally Posted by phillips91

well, for starters, the torino talledega and mercury cyclone came with 3.25 gears, not 3.90. both of which could easily hit 180 without a 5 mile run. if you want to compare handling of yesterdays cars to todays, dont use a 60's car made for drag racing, use one thats made for handling. the 68.5 428 mustang was a drag race special car that was meant to do nothing more than go in a straight line and had no suspension upgrades what so ever. it wasnt built for handling. check the boss 302 if you want to see how a 60's car thats made to handle can do. cars today, like the gt-500, are much better all around cars than the muscle cars from the 60's, but the cars back then were built with a purpose. the boss 302 was meant for trans am racing, so it wasnt that good at drag racing. the 68.5 428 mustang was meant for drag racing, so it didnt handle worth a crap. the talladega was meant for top speed in nascar, so it came with 3.25 gears instead of 4.30, etc.

i dont know if you know much about 60's cars, but back then drag racing, nascar, etc had to be showroom cars. which means they had to come from the factory de-tuned enough so that the average joe could drive them on the street, but easily tuned to compete in nascar and professional drag racing. motor trend or car and driver, i cant remember which, did some tests on the boss 429 a few years back and in stock form it ran a 14.0 in the 1/4 mile. that will barely run with a stock 5.0. they also mentioned that the stock tires were 8" and it spun the them all the way through 3rd gear. they did nothing but bump the timing and put a set of drag radials on it and it ran an 11.2. so did it run an 11.2 off the showroom floor? no. but all it took to get it there was a decent set of tires and bumping the timing.

ive owned mustangs/muscle cars from every generation from the 60's up through the 90's and id take the 60's models any day of the week. but like i said, you had to get one for its intended purpose.