Hey there.

I ran across the site looking for info on LS engines. I can put an engine together, and it will run. I do not know a ton about custom engine work.

I have a 76 Firebird Formula in the garage. Have had her for about 15 years or so.Running a '67 400 block, 12.5 to 1 compression, Crane Fireball cam, some mild headwork, Wenzler tunnel ram with dual 45s. Muncie M22 4spd.

Recently I decided to tear it down and just freshen up. Then I decided to stroke it. Then I decided to throw a blower on it.

After looking at what it was going to cost, and the power gained from all that work, I had a friend tell me to just to get an LS engine.

I decided to listen, and I am pretty amazed at all the info out there. That being said, I am not a fan of telling newbies to go google it when they have a question, and a lot of boards seem to be that way.

I think that an LS engine with a supercharger and a 6 spd manual is where I want to be, but I am open to suggestions, opinions and advice from those that know more than I do.

I am an open book on this endeavor, hoping to learn.

I want to build this thing slowly, and do it right. This is not just about power, but also about making it dependable and cool.

I appreciate being added to the forums and look forward to shooting the sh*t with you all.

 

Welcome to LS1Tech! The LS platform never ceases to amaze. In the pursuit of power there are many, many different ways (big blocks, turbo small blocks, rotary, nitrous, superchargers) to get to a certain perceived hp number that someone may have. A couple of relevant questions that have to be asked here...
1. How much power are you looking to make?
2. How do you use the car?...which is beautiful by the way...
3. Is low rpm driveability a concern for you, meaning how do you want the car to act in traffic, or cruising across a parking lot, or even on two lane backroads?
4. What transmission are you planning to use?...there have been many advancements in gearboxes since your Muncie was built. Not hating...I have a Muncie in a show truck that I love.
5. What is your budget?

The LS can be made into any variation that you can dream up. From a 300 hp cruiser that’s quiet and smooth to a 3500 hp turbo fed monster that wakes the dead. The goal here for you is to be honest with your self regarding direction and budget. Lots of smart guys here to help guide you that have been down the LS road in many directions. We can tell you what works and why.
These small, lightweight engines are crazy reliable, seal up well, meaning no oil leaks, run cool, and are relatively cost effective and parts are available everywhere. EFI makes every platform easily tunable, and the LS is no different. It truly is a remarkable development in gasoline engine design.

 

SD 455 over LS Swap

 

SD 455 over LS Swap

 

SD 455 over LS Swap

listen I had a 75 bird and I found a 69 GP motor witch is the same as the GTO motor 350 horse 400 cu in. Pontiac block basically it was ram air head on pink rods and steal crank perfect motor to build could have build it to 700 hp no problem for minimum financial input and it stayed Pontiac find an SD 455 motor from 73- 76 or just mi.ic the build on a 455 Pontiac block its steal crank pink rods in free flow heads Edelbrock cam and heads if you I shop smart you can build big block for around 5-6500 bucks or if you find the SD 455 just build it back factory piston rings bearings cam 3 angle valve grind millings high volume oil pump go this route and increase the value of the car by staying Pontiac a Pontiac Firebird is not a Camero its a bird