I plan on upgrading to a Dana 44 with 3.54 this summer but also plan on getting a supercharger in the future. I figured if I'm gonna get a SC, I might as well make my tranny stronger beforehand. My question is, what kind of performance will I see with that kind of setup? Will it cause any problems or possible bad outcomes because of using those 2 together? As you can probably tell, I'm looking for any info on this because I don't know anyone that has SC's other than you guys.

 

If you have no intention to drag it on slick, then you should not spend the $ on dana 44. Street tire your 36 will never break anyway. Your just keep spin :)


Bruce

 

I was originally planning on getting a new gear installed (3.73) but heard that anything with a higher number in a 36 will make it weak. I've also heard a lot of stories of people breaking them several times. I was told to just get the 44 because its near impossible to break, even if I have slicks and decide to drag. I figured that if I was gonna get s SC that the 36 wouldn't be able to handle it, let alone with 3.73 in it.

 

Wow, danas do break with Sicks. Yes they do break with slick not a typo. If you want a Darg Vette and are making pretty good power then just go with a Solid Axel, but if you just want an extra 100-150HP and dont want too many problems, then just dont use slicks or DR's on your vette. I heard of a guy with 1300HP using Dana 36, BUT HE NEVER USED SLICKS or wide tires. But a Dana 44 is stronger, but they are both weak when it comes to slicks. :yesnod:

 

If you plan on drag racing you will need slicks. The 44 will break with slicks but the 36 will break much easier. Even if you had a ford 9 inch and slicks you are not going to be competitive because you canot run enough boost on your stock engine you would get your doors blowed of by someone making big power. If you increase the boost then your engine will blow. I have watched the huge increase in people who are installing blowers and most within a few weeks are crying the blues because the engine blew. Just this week one member posted that he was going to sell his blower and go with nitrous because he blew his engine in less than 1000 miles. After reading how he had his engine setup I don't know how he got that many miles before it blew. I don't want to belittle anyone but if you watch this forum you will see that a lot of them got some expensive lessons about supercharging. What I'm trying to point out to you is that if you plan on racing in the forced induction class then their is two things that you should plan on doing one is do lots of reading on supercharging and get ready to spend big $$$$$$$$ he who spends the most runs the fastest. I hate to see somany guy's ruin their engine but the sad truth is that as long as they keep installing blowers and know very little about them this will continue. The good side is there will be some good buy's on slightly used blowers. One thing that makes it worse is post that give bad advice about forced induction someone reads it and repeats it in another post and those people will make the same mistake.
Example recently a member ask what compression ratio should he run with a supercharger and another member posted that since 9-1 would allow 8lbs. of boost and static cylinder pressure of 125 you could lower the C/R to 8.5 and run 28lbs. of boost because it would be 153lbs of cylinder pressure. How the hell he came up with the idea that you added the boost onto cylinder pressure I don't know but this points out a serious flaw of the forum is people however well meaning they may be put posts like this that will be a diesaster if people follow this advice.
Forced induction is far superior to any other path to making power but you need to understabd it or it will make you wish you had not tried it. Didn't mean to rant but it makes me sad to see so many making these mistakes. If you go forward with this project do your homework. :banghead:


[Modified by black bart, 6:05 AM 2/2/2003]


[Modified by black bart, 6:10 AM 2/2/2003]

 

Thanx for the info so far guys. :cheers:

This car is my daily driver and won't be used for drag racing solely. I just want to make it in the 12's or possibly 11's and that's it. I won't be putting wide tires or slicks on it probably ever, so I'm not worried about any problems coming from them. Right now, I'm just trying to figure out the right formula to get into that time range w/o using nitrous. :smash: I'll probably have 1-2 yrs before I do anything, so I have plenty of time to do some research for this project. But I will be able to get a new tranny this summer and I need to get as much info as I can before I go and purchase one only to find out later on that I didn't even need it (or possibly want it).

So far, I'm thinking a SC is the setup to go but I don't want to have so much that I blow my engine (like you mentioned earlier). What's a pretty safe amount? About 8-10lbs of boost? :confused:


[Modified by Lord Odin, 12:16 PM 2/2/2003]

 

Calm down Bart, I just asked a question on how to figure this stuff out, What you do is just blow everyone off by saying no YOUR WRONG IDIOT, but you could tell us how to figure out Forced induction. , because you "know" so much about "Forced induction" :reddevil

 

Its not boost that kills the engine. Its the tune. I've seen guys with mustangs run 12psi on the stock motor with a good tune and never had a problem, meanwhile others with forged internals have bown their engines at only 8psi.
Moreover, boost is not an accurate measure, becuase all it does is tell you the pressure in the manifold. What tells you the amout of air is flow. For example you have your s/c engine set at 8psi, and you go and port your heads and manifold, result you'll increase airflow and the boost pressure will drop. So whatever you do just do it when you know what your doing. I would sujest you get lower comp. forged pistons, to ~8.5-9.1 CR is adequate for the street, and after that spend a very good chunk of your budjet at a dyno tune in order not to blow your investment.
If you need more "in" on forced induction PM me and I'll be glad to help you more in depth. :thumbs:

Paul :cheers:

 

DO you mean by the engine running rich or lean? Not getting enough fuel? Also how much timming do you have to take out for every pound of boost you run?( Even if its intercooled just to be safe) ;)

 

Theres a rule of thumb but every car is different. Wide band and data logging is the way to go.