540ci BBC conversion or keep the LT1 for 1996 impala SS?
540ci BBC conversion or keep the LT1 for 1996 impala SS? I was thinking of converting my 1996 impala SS to 540ci chevrolet big block streetable. are there to much hassles with this conversion or keeping the LT1 is a more comfortable way?
any one has info on how difficult to convert to 540ci big block?
any one has info on how difficult to convert to 540ci big block?
You have a lot more engine bay room and space than an f or y body so it's much easier in theory but probably less resources to help since it's probably been done less.
Prelim questions:
What's your goal?
What's your budget?
What parts do you have, resources at your disposal, tools, friends, etc?
Prelim questions:
What's your goal?
What's your budget?
What parts do you have, resources at your disposal, tools, friends, etc?
It's been done, the original concept Impala SS had a 540 BB 
I think you would be better off sticking with the LT1 and build a 383 for turbo/supercharger if the car actually gets driven much.
There's tons of room for a BB though: http://www.impalassforum.com/vBullet...d.php?t=233697
I think you would be better off sticking with the LT1 and build a 383 for turbo/supercharger if the car actually gets driven much.
There's tons of room for a BB though: http://www.impalassforum.com/vBullet...d.php?t=233697
Where are you going to get the BBC from? I work with a guy that installed a GM ZZ502 in his '95 GMC Yukon, GM uses low tension rings on those motors and before he re-ringed the engine it was getting 300-400 miles per quart of oil. His wasn't a isolated event, many people have oil consumption issues with these engines.
Where are you going to get the BBC from? I work with a guy that installed a GM ZZ502 in his '95 GMC Yukon, GM uses low tension rings on those motors and before he re-ringed the engine it was getting 300-400 miles per quart of oil. His wasn't a isolated event, many people have oil consumption issues with these engines.
A few drag cars have worked, the street ones never seem to pan out as planned. Seems like a great idea that is a lot harder to execute than one would expect and if you do a nice injected setup $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
I would sooner do a turbo 5.3 or LT1 355 with 24x for less money and more power.
I would sooner do a turbo 5.3 or LT1 355 with 24x for less money and more power.
I will get a BBC aluminum block from summit racing trick flow 320cc bbc heads ported by AI and custom cam with stock idle. Compression will be at 9:1 later I might add custom twin 76mm turbo system. Can I reuse the stock LT1 pcm and wiring harness for the bbc after being modified?
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo My buddy is going to do a turbo on his also, looking at 700-800 fwhp.
Teching In
Joined: Apr 2015
Posts: 13
Likes: 0
I will get a BBC aluminum block from summit racing trick flow 320cc bbc heads ported by AI and custom cam with stock idle. Compression will be at 9:1 later I might add custom twin 76mm turbo system. Can I reuse the stock LT1 pcm and wiring harness for the bbc after being modified?
I will get a BBC aluminum block from summit racing trick flow 320cc bbc heads ported by AI and custom cam with stock idle. Compression will be at 9:1 later I might add custom twin 76mm turbo system. Can I reuse the stock LT1 pcm and wiring harness for the bbc after being modified?
But even with less fuel milage the 540ci BBC will make more power and more power under the curve if built correctly. There is an impala SS with 496ci BBC did 134@9.92 sec NA. Check it out in the impalassforum.com I guess. I'm not sure what heads he used and how big the cam was but I guess it was a hydraulic roller cam. also don't forget the impala SS is a heavy weight car.
Last edited by Abdullah; Oct 2, 2015 at 08:11 AM.
LSX 454 would be 10x cooler and make more power with better gas mileage. 
https://www.texas-speed.com/p-3967-t...y-package.aspx
https://www.texas-speed.com/p-3967-t...y-package.aspx
Last edited by ahritchie; Oct 2, 2015 at 08:41 AM.