hey guys been preserving 68-69 gs for yrs, i have 18 of them, just now getting into converting skylarks into street rods, my next project im looking at a blown 455 with win turbos, anyone ever done it before,
Hi there, I would advise against using both turbos and supercharger at the same time... The tune of the carb or EFI would be impossible to manage as the boost would come on at different times with the blower and the turbos. Plus the Buick 455 would only be able to handle a low boost setting on the turbos anyway unless you add about $4000 in bandaids to hold it together. Not many people turbocharge the 455 as it has a really thin block casting. Do you have any 350 cars? They would be better candidates for adding boost. Let us know your goals. Is this for show or drag racing or what? If for drag racing then what kind of cage are you adding and what quarter mile are you looking for? Here is some info that might help you: This is the only Buick 455 turbo around that I know of and it happens to be in a Camaro: https://www.youtube.com/watch?v=jJJbp8teqaM http://www.v8buick.com/showthread.php?168748-Twin-Turbo-ZSX-Skymaro-Progress&highlight=skymaro An article I wrote about turbocharging (use the zoom in button on each image): http://smg.photobucket.com/user/sea...ort=9&o=1&_suid=13839987793840669249608533679 My car, although the stronger 350 block: http://smg.photobucket.com/user/sea...4&page=1&_suid=138399860025009723917995210011
When you say "blown" and twin turbo, I assumed "one" power adder...GS455 David had his build well documented, so that Camaro is NOT the only one......
I've been goofing with one for about 20 years, there's a post on here somewhere with my info and others, also. I'll try to find it. Here's the link; http://www.v8buick.com/showthread.php?213664-Boosted-Buicks-Here! It's a sticky, so you may have already seen it.
Ahh, let the 455 bashing begin. BTW, nice paraphrasing in that turbo article:TU: Is that what we can expect from your new book? 4k? Where did that number come from?
Hard to hear 455 bashing once I start mine up. I think a turbo/supercharger combo would be cool. Someone should try it. Twin turbos feeding an injected 6-71 with a little nitrous wouldn't be too over the top. :Brow:
It is not 455 bashing, I was just pointing out the facts so the new guy can make an informed decision. Glad you liked the article.... I wrote it off the top of my head, but I guess you would have had to copy out of a book LOL! I was sad to hear about your 455 block breaking with a few PSI from the charger, it sucks you had to rebuild when you were not even pushing with high boost...
Sure, facts heavily laced with exaggeration, and no, I don't need to copy it out of a book, its in every basic engine theory book ever printed.LOL I know, lets boost a 350 with stock rods...lots of them, not just one... Don't get me wrong, 350's are great little engines, but they are just that...LITTLE! LOL
"W.T.F." EXACTLY! This is one of those threads I should have just stayed out of......Funny how the original poster hasn't came back after all the nonsense started flying. Good luck, all the "experts" can run with this one, or did they already?! Gary G.
My engine is low buck on purpose, I wanted to trash cheaper parts during the learning curve! The only things I've really messed up though are too-thin copper head gaskets (.020 is too thin, go with .040 min.) and the bearings because the pan wasn't baffled well. You need something at the front of the sump, too, so the oil won't run away from the pickup when you slow down. Anyway, my Band-Aids consist of a block girdle ($495), install block girdle ($550), and external oil pump (approximately $1300). The scavenger system from AM&P would do the same thing for about $550. And $85 worth of block fill. I'm still using a stock crank, stock rods, 430 rockers, iron heads with stage 1 valves, and a timing chain that needs replacement (way too loose!) I could build another complete long block for about $6000, give or take. I did modify the oil pan with a much larger sump and trap doors so oiling wouldn't be a problem. I've run about 10 to 11 lbs of boost with no intercooler, and I'm shifting at about 6000, although one time I fell asleep and shifted about 6500. At the bottom of this page is an E.T. calculator; http://www.so-carspeedshops.com/RACING/tabid/304/Default.aspx At 5315 lbs and 116.92 mph, it says it should be making about 660 hp at the flywheel. It has run as fast as 11.76 at 115.67. The 116.92 was a 12.035. Check out this thread on the Turbo forums; http://www.theturboforums.com/threads/305001-How-long-till-it-grenades-(-It-never-did!-Go-figu 164 pages, but good to read.
Wouldn't a TA block take anything you can throw at it? How much hp are they rated for? Also the TA cnc heads at 400+ cfm?
I like your build Alan, it is a really cool car! Smart move using the girdle, it will really help keep the block together no doubt about that. Yes, that thread about the junkyard SBC is great! it proves that a well designed engine like the SBC can handle a real pounding without any bandaids or high $ parts... Much like the Buick 350 the SBC is a solid platform. Sure, an aftermarket engine is a safe bet for handling huge HP. The original poster did not ask about boosting a TA block though, my impression was that he wanted to use a factory block. Who knows, maybe he is willing to spend the $ on all the aftermarket block?
