Hey everybody, I'm definitely new at this website so sorry for any misunderstandings, I have read the forum about V6 into V8 at least 10 times now but I just wanted some extra pointers. I own I 92CamaroRS that has a itty bitty V6, I have built up a 383 stroker engine, that dynoed barely over 500hp, out of a 350. I want to know what kind of transmission I will need to be able to survive a 383's torture (automatic or manual, doesn't matter) I also was hoping that someone would know if, when switching the engines, I will need a new carriage for the engine to sit in; my friend and I put an LS1 in his Firebird after taking out a V6 and we used to same carriage so I am hoping it will be the same. I was also hoping someone out there would be able to give me a list of items on the car that can be removed that were either put on the car for comfort, looks, or stupidity. I know there are things you can buy, but I was just wondering what in fact you can just remove (such as rear seats, passenger seat, inner door panels, spar tire, AC components, etc.) I was also wondering if the fuel pump will be needed to be switched out from the amount of fuel that will be demanded from this operation. My intake has a CFM of 800 (but I honestly don't know what that means except for a very basic understanding) Thanks guys for any help that you can offer me, sorry for any spelling mistakes, and I apologize if this forum topic has already been asked (I have only been a member for 10mins)

Welcome aboard thirdgen.org.

Thanks for reading the sticky. My apologies if the part about the cross-member or "cradle", as you called it, was unclear. The crossmember itself won't have to change, but the location of the engine mounts that bolt to it will have to change. It's not a big deal, is a bit of a hassle, but the good news is you don't have to buy anything expensive or search junk yards for the right part.

TH700R-4's can be built to withstand 500 HP. They probably aren't the first choice for that, but your primary intended use would be important there. If you expect to drive the car on the freeway every day and race it a few times at the dragstrip per year, then you'd probably want an overdrive transmission. If all you plan is to cruise the drag on Friday nights and race it every weekend, then you'll probably want a different transmission. That could be a TH400 (pretty stout, but they do take a little more power than other options), TH350 (pretty popular, can be made almost as stout as a TH400 with less parasitic loss), or Powerglide (very stout, very low parasitic loss, but the car should be lightened to get the most out of it). If you're thinking manual transmission, then forget any factory 3rd gen offering - T56 would handle it, Tremec and Richmond make good aftermarket transmissions as well.

You'd better plan on upgrading the rear end - you could probably get the stock one to hold up for awhile, the only question is how long. I'm in the process of getting a stock one upgraded, looks like it will run me about $1100. For twice that, I could get a 12-bolt that would probably last forever. So, research your options there before you start abusing the poor car with that engine.

I hope you have sub frame connectors in your plans.

A Walbro 255 electric fuel pump would handle the demand. There are other options people use, sumped tank, Aeromotive, etc. The Organized Racing forum is a good place to look for what people are using.

Weight reduction - it's discussed from time to time again on the Organized Racing forum. Along with what you mentioned, people remove the front bumper support, use a Lexan rear hatch window, power windows/locks/seats, door supports (usually when a cage is employed), carpet, etc. Tubular front suspension will also reduce weight.

trying to loose weight on my 84. what do you mean by front bumper support and how do I get rid of it?

tryin to loose weight on my 84. what do you mean by front bumper support and how do I get rid of it?

@five7kid - A Walbro 255 electric fuel pump will fit the stock 89' Firebird tank?

Also, is there any sense to have it inside the tank, or does the frame allow us to mount that walbro outside of the tank?

The Walbro 255 he is talking about is an in-tank pump. You can install a external fuel pump, however it will be louder then the in-tank setup.

I understand, it makes sense to keep current stock setup and go with an in-tank electric fuel pump...