Guys.........I've been over 150 before with no problems

That'* not good enough!

Well, the front end does lighten up quite a bit over 140. Perhaps you should install some skirting or even lower the front end an inch.

just do like enzo and make flat panels from aluminum to smoothout the bottom of your car. I watched an old drag racing video and guys with chevells were using cardboard and duct tape to smooth out the under side and it made a difference in the quarter mile. just a thought.

....With a big Ricer wing on the rearend.

Smoothing out the bottom would be suicide with not enough downforce on the front. Look under a Bonneville unibody sometime. Ask Mario Andretti how that works.


I have some ideas for next year, but again, the car is stable up to 140 now, especially with the V-rated tires. Less sidewall expansion helps keep the front down. A minor ELC adjustment will help further. It really isn't a big deal. 140 is a cake walk. The only variable I haven't dealt with is the heat, and that will be fully tested at speed before I go.

Sidewall strength of the tires has more of an effect on front-end lift than you might imagine. I've tested this with three sets of tires now. The difference is remarkable.

Sounds like a blast

The only issue I see you having as said is heat. If I remember right you have a 1 mile area you must maintain your speed over, not to mention getting up to that speed.

Our cars are built to get up to a speed in a hurry but aren't very well designed to maintain those high speeds. Modified series 2'* have driven the autobahn and maintained 140mph speeds ... so a series 1 can do it...

However, the M62 is basically at it'* max output from the factory.. smaller pulleys on that blower start to generate more heat than is helpful in getting max performance.

The heat from that blower holding 130+ at 5,000+ RPM for a mile is going to be big. I suggest *which you may already have in mind* running a 104 octane fuel to help curb the heat effects and prevent predet.

A cutout might be a good idea too... it will be loud as heck but will help scavange those exhaust gases out a lot faster at those RPM'*, hopefully saving you some underhood heat from the mani'* turning red. I would run a slightly richer fuel mixture as well if possible, again in helping with heat.

You don't really have to pay much attention to it if you were only going to do it once, but multiple passes in heat like that at those speeds, that blower is going to turn into a gigantic hair dryer LOL

OH, and don't let it shift into OD at those speeds.. the 4th clutch has MUCH less area than 3rd and might not be happy.

Good points, Caminated. I've been through most of them already. Keep in mind I'm running ram-air feed and cooling to the SC, and run alcohol/methanol injection for it'* intercooling benefits.

The run at speed week is now mostly dependent on my getting a transmission for the car that doesn't have a big hole in it.

Keep in mind this is not a flying mile like the big boy'* run. The 130 club is actually somewhat exclusive because it is a standing start one mile run. Also add low traction surface to the list of variables. (no hard launches)

Will, so far I'm still in. No chance of making the club unless the head work and tunning are done by then.

A few of the past Hot Rod magazines had very indepth articles on Bonneville Speed Week. I recommend anyone going to pick some up and get a feel for what they're in for.