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Just think of it as a tax, like on tea...

That's not exactly how a viscous drive fan clutch works. In fact, there's almost no change in fluid viscosity over the entire operating range of the clutch. In the "low-torque" (cool) mode, there's only enough fluid in the drive section of the clutch to reach a certain maximum torque, so fan...

Sorry to be the one to break this, but I think he said "pounds sterling" (or that funny 'L' abbreviation therefor) not "$". At current exhange rates, that's $284!

! Not to put too fine a point on it, but if the coating you're talking about comes from Jet Hot (or HP Coatings), it's not "powder coat", it's a flame-sprayed ceramic coating, something ENTIRELY different. Kinda like the difference between latex house paint and the heat resistant tiles...

Ah, the light dawns! Now I understand! Yes, a good aluminum-content high-heat paint would be an excellent solution. NOT black bar-b-que grill paint! You want the high heat reflectivity of the aluminum coating.

1) Yesss; and the tube manifolds on my '89 are pretty good in this regard, although I do have a Hedman I'm thinking about installing. Unless you're "race-only", I'm not sure a header is worth the effort and cost. 2) If most aftermarket suppliers are like say TPIS, the HP gains they claim...

Re: Adding on..... Gary: I'm not familiar with the underbody of the '73, so I may recommend something that simply can't be done, but here's what I'd try: I'd plan on a 2-1/2" system with mufflers that have 'true' 2-1/2" inlets: by that I mean, check and see if they don't just immediately...

Well, it sorta looked that way...:eyerole

Paul: Take a look back to my first post on this subject, 7th post down from the top. I mentioned that I've tested a 2-1/4" (true dual) system on a ZR-1, and got a 10% reduction in exhaust backpressure, good for a couple horsepower even though the LT-5 engine is a 4-valve. And, this system...

Yeah, my rubber-fluid compatibilty chart says Buna-N is Good, for gasoline, Neoprene is "Fair" (would probably work fine in an injector, where there's no relative motion) and EPDM is a big "No Way"! Other "Good" compounds are of course teflon, nylon, and Hytrel. Wonder what you got at the...

And thank you! I occasionally monitor this site from home with a dialup that NEVER exceeds a 21kbps rate, and being able to load in a reasonable time is what really distinguishes this forum from "another" Corvette forum - but I won't name names! Regards, R

Or you could take it out of gear, block the wheels, and jack one rear wheel off the ground; assuming you don't have a locker. Spin the wheel exactly two complete revolutions, and count the number of times the driveshaft turns. It helps to make chalk marks on the tire and on the driveshaft...

The heat shields reduce underhood heat, make the sparkplug wires and plastic parts live much longer, and it's very doubtful GM wouldn't have put them there if they weren't needed. You do want nice shiny aluminum-colored shields that will have a low rate of radiative heat transfer ("low...

Re: mass airflow The "other" computerized engine control system is called a "speed-density" system: it looks at engine RPM, manifold absolute pressure, barometric pressure, etc., and "guesses" at the amount of fuel required based on a "map" stored in the computer. Speed-density works fine as...

Exactly. He's not going for maximum horsepower, and it would be senseless to put an exhaust suitable for a 600 HP race engine on a Sunday-cruiser Corvette. The cost, the weight penalty, and the crummy sound is hardly justified by... no horsepower gain whatsoever , do you think? Of course, if...

Not to belabor the point, but if you're pedal is traveling to the floor, it's already past time to replace something. If your brakes need bleeding - how did that come about? That's right: Something failed. Check out your calipers: If none of them are leaking, go for a ride on a loose gravel...

Sorta depends on how far you plan to go: 2 x 2.5" will be all you need for 475 HP or more on the street. Going bigger at lower HP just makes the exhaust sound "trashier" - but by all means, if you want it to sound like Bubba's pick'em-up, then go as big as you can. Just keep in mind that...

Leaky vacuum booster gives a REALLY hard pedal, not long pedal travel.

PS: If you do the M/C replacement carefully, you won't even need to bleed the system afterwards.

You're stopping on probably your front brakes only. You've got a bad brake mastercylinder - mine did exactly this about six months ago, and I found a rebuilt unit that works fine for $79. The catalog outfits want an obscene amount for a rebuild! Fix it NOW! Regards, Robert