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How many miles are on your 84? and whats the over all condition as it is now?

I doubt that some one selling a 92 would want an 84 as a trade, but you can always ask. Depending on the condition of the 84 you have now, and based on your current situation, my take on the course of action would be to maybe fix up the 84 and get it in as good condition as possible and...

I dont believe its possible to modify the trans in such a way, however you can change the rear end gears to a differnt ratio for better acceleration at the expense of top speed. There is good chance the Lt1 will stress the stock rear end anyway. The real question is, How much money do you...

That's a lot of feedback. Anyway my conclusion about bolt-on horsepower gains is that they are probably going to be minimal at best. There are things that a person can do to make a car run more effeciently such as air intake, exhaust, and possibly a performance chip but as far as significant...

It will cost alot of money. A few grand at least. The type of transmission you have will not be a major factor in top speed. Even though the 6 speed has 2 over drive ratios, it doesnt mean the engine can "pull" in those gears. The 84 stock will be close to hitting 140 in a very long run as it...

The trans swap is doable, but it needs a later model trans – I think the bell housing for the 92 to 96 is required. Trans mount may be slightly off. The LT1 will trash the early C4 manuals. The hydraulics would also need to be installed. You will need the full wiring harness and ECM for the...

Cant even imagine how much GM must have paid them.

1979 53907 1984 51547

If I had an 84, I would just try and restore it to mint condition, just as a classic in my own mind, being the first of the C4s. As for performance, a low end crate motor like the GM 290hp 325ftlbs motor. It would be a major increase in performance, and a platform able to support more...

Well it is a mule. Its a V8 powered Corvette that has less stright line performance than many 4 and 6 cyl grocery getters out there today. No one is making any judgements about your intellect. You started this thread about wanting to have 400hp out of an 84 Crossfire. Unless you have a money...

You have no idea how much money they invested and its really no bearing on your project. Good luck.

You can spend a ton of cash making a mule into a race horse if thats your thing. 20 years? C4s hitting their time? Unless your car is BONE stock and still running it wont be worth top dollar. You can just pull that engine and put it in storage. Really - what ever your smoking must be good stuff.

I think you need to do alot of research. The crossfire unit is crap. Not matter what other componets you replace, the intake will not be up to the task. A small Holly will perform better for less money and complication. 400 hp from a 300 cubic inch V8 is no big shakes. But from a 84 crossfire...

You got a better chance of hitting the lottery without buying a ticket than getting 350 to 400hp out of an 84 for less than a small fortune. Even if you did get that kind of power out of an 84, the trans and rear end would not take it for long. I would not go around telling the story about...

I remember "back in the day" that pouring Ford trans fluid in a THM400 or THM350 would reduce the slipping for a short period of time. Pretty much the same way pouring in a few cans of STP would "cure" an engine knock.

We have all seen worse -by far.

Unless you know the folks at the shop and are getting a major discount on the tune its pretty much a waste of money. Maybe if you had a cat back exhaust or a vararam it would pay, but even then its still maybe a small gain. Putting the car on the dyno can be anywhere between $300 to $500...

My whole thing is understanding the entire picture. Hindsight is always 20/20 but I seek the hindsight before the implementation. This way of thinking has kept me out of financial disparity because I asked the questions that other people may have had but didn't want to ask because of the stigma...

OK, very well put, understood. I think you are misunderstanding the depth of the concept here. The level of modification I am talking about is minor in the scheme of things. For example the cooling system was designed to operate within certain parameters. The coolant can range in temperature...

I read all of your posts. I was just asking for you to specifically state it.