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They are behind the battery on the firewall, both are actually the same part. You must replace them both.

Yes, thats quite normal for a car that has no cooling modifications. But you may have the space between the condensor and radiator plugged up with road debris, that would affect temps by about 10 degrees if it was really plugged.

Technically, the TPI system is a multiport injection system, both use a batch-fire setup. Its called "tuned port" because of the intake design being "tuned" for high port velocity at lower rpms. Just call it an LT1/4.

You will not plug up the cats, and you will pass a sniffer test, but you will not pass a visual if they have it in Georgia.

Helm=GM, they are the same manual. Chilton's and others may be good for a couple things, and pictures, however the instructions are best from Helm, 98% of the time.

Oh theyre still in business, but good luck getting their system right now.

I just use Meguiars cleaner, #7, #26

Normal for an L98 would be 210-230 for coolant and about 15F hotter for oil. Optimum would be 200-210oil and 15F cooler for the coolant. Mine runs at about that range.

D36 for automatic, D44 for manual.

Stock is 48mm, however its already more than the motor can use so going to 52 will be a waste of money.

There are several tests, but none that I believe because each one i've read was done by a potentially biased party using methods that aren't strictly adhered to. Usually they'll compare M1 in a 4-cyl and RP in an 8 and try to tell you something is better about one or the other.

On an 86 you will need an adapter plate to fit C5 wheels to the car. AFS makes some that don't require them. I would get the adapter from VetteBrakes.

The generic chips are worthless, I wouldnt recommend getting a custom chip until you are done with mods or have changed the camshaft.

Typically, prices go up in good weather, since its a summer weather car. Spring is a seller's market. Fall is the buyer's market.

http://www.superchevyperformance.com/brakes/c5brakes.asp I have it, do not buy from Vettebrakes or Ecklers, buy from Superior Chevy. Its a real upgrade. However, you will need a special adapter bracket, that I bought from Ed Salinas. Electro-dynamics charges too much for it...

If you want real high rpm power, then the MR is for you. It would require a cam change to ZZ9 or bigger, and then headwork or new heads to get all the potential out of the engine. It will cost you some low-end power, its a midrange/high rpm intake. Thats why alot of people end up changing their...

No get new ones.

A bigger engine would need a cam thats suited to it and also to emissions, and then you'd need the right tuner to program the chip so that it would pass the sniffer.

GM crates usually come with carb setup manifolds, so you would need to change the manifold to something like Accel or TPiS BigMouth. Then either put the Superram on it, which is what you should do if you want power.....or put the old TPI-style on it. Everything bolts up.

Usually the 383 is made by boring the cylinder .030" and adding a 3.75" crank, which comes factory in the 400 block with its large main journal. Nowadays they make the larger stroked crank with the medium journal so that doesnt require machining, all that needs to be done is some block...