i see all the differnt set-ups,talk of turbos,supershargers,NOS,etc. but what would a rough estimate be on how much horse power a 455 can handle? would it be a waste to invest all sorts of time and $$ into laying some massive power down with twin turbos?like 8-9 sec 1/4 mile horsepower? im well aware of needing a block girdle,hard block,and a light weight rotating assembly but is this doable or should i just build the snot out of my GN?
if you're going to build it that hard i would think you should wait for delivery on the new block castings. speaking of which, i prolly outta bump burek ( buick535 ) for news about that again...
Basically I've heard about 600HP before you need a girdle, then about 800-900 with lots of internal reinforcement (Halo thing, etc.). I think one guy pushes the 1200HP mark, although he seems to replace blocks fairly regularly. OTOH I've heard about some of the turbo-6 motors that exceed that pretty easily, but not without some mods. I think if I were just entering the Buick world right now, I'd get one of the TA turbo-6 blocks and build the snot out of it. -Bob C.
aftermarket blocks are alwys best,but im just wondering how far i can go with the factory block if modified properly. i'll need that $3500 new block price tag for my forced induction LOL. if my GN block can take more power i might just lean that way.
Rods blower car is making about (or over!) 1400 hp, but it hasn't been an easy road for him. There's one guy that's making over 1000hp with a Procharged 350 Buick, no girdle or block fill! Sounds like a lot of potential left in it, too. I guess it all depends on what you want the end result to be.
I'd say your better to put the money into the foundation than into a Blower or Turbo. If you put all the light expensive parts into a stock block then add boost and blow the thing to bits then you are back at square one. Just my opinion, but if you want to get 1000 hp then either go 455 aftermarket block or 231 aftermarket block. There isn't enough parts around to make a 350 make that kind of power (yet) unless you have your own personal pro mechanic with a full shop, dyno, and he doesn't charge you any cash. Right now it costs allot to build a 350, but I hope that changes becuase it's my personal favorite. I think out of the 231, 350 and 455 the 350 has the most potencial for High HP but we'll see if we get some heads and intake.
i want the end result to be a stupid fast(stole that from you) car i can drive on the street that wont crap out on me more than your average high horsepower engine. anyone know which has more power capibility-turbo 6 block or 455?
For streetabilty, you can't beat a turbo. Weather it be on a 455, 350, or 231. The one with the most "potential" is the 455. Reliability is mostly in the hands of the tuner and builder/machinist. NO matter which you build, you will need a crank, rods, and pistons for a "stupid-fast" application. Plus custom headers and alot of other details to make it all work and come together. The 350 will make the most power with the least hassle and complication of the build, a 455 is the very complicated to get a shortblock built right to handle a high horsepower setup with reliabilty, the v-6 is a small engine which takes more to get the same power out of it.
cotton performance is fairly close to me for turbo regals,but does anyone know of a good engine guy in or near CT that knows 455 buicks?
