baron_ Posted August 1, 2007 Report Share Posted August 1, 2007 I've collected all the parts for a v8 turbo setup for a traditional pontiac engine (455, probably) Someone on here have an old chevy or ford v8 that I could talk to? I'd love to drop by some time and look at it, get opinions...thoughts etc This should be a fun build (two big Holset diesel turbos....i've got the manifolds mostly done already) Quote Link to comment Share on other sites More sharing options...
Lustalbert Posted August 1, 2007 Report Share Posted August 1, 2007 What size holsets are you running, or what did they come off of? Also, what vehicle is this going in? Engine bay size will play alot in the plumbing department. I am doing a setup on a 425 Olds with twins, just need time off so I can actually work on the thing. A shop not an hour away would help also. Quote Link to comment Share on other sites More sharing options...
baron_ Posted August 1, 2007 Author Report Share Posted August 1, 2007 2 holset H1E's Biggish diesel turbos from what i know according to the map, they should be good for a lower RPM motor (like a pontiac) this is gonna be my first setup, all on the cheap and after i blow up the engine from learning to tune it the first time, I'll build something fancier It'll go into a 60's GTO or Firebird (no car, yet...shopping) I've got a '66 GTO they'll go in until i find something more suitable so, i don't anticipate any problem with engine space - i'll take the inner fenders out and have a crapload of room The headers are the biggest headache - all have to be custom I've got a beat 400 engine that's low compression these will go on for testing and a 467 forged components motor is almost built and ready...and will be the victim when i learn more about it http://homepages.udayton.edu/~mertzgea/100_0965.jpg Mockup on a 70's firebird to get the angle of the exhaust manifolds right http://homepages.udayton.edu/~mertzgea/100_0979.jpg http://homepages.udayton.edu/~mertzgea/100_0967.jpg High 10's, low 11's are the current goal. Maybe high 9's with the 467, after i learn what i'm doing A buddy has a setup that runs 9.87 that i'm modeling all this after Quote Link to comment Share on other sites More sharing options...
Rally Pat Posted August 1, 2007 Report Share Posted August 1, 2007 where did you get your turbos? I am trying to track down an HY35 for my coming project. Quote Link to comment Share on other sites More sharing options...
baron_ Posted August 1, 2007 Author Report Share Posted August 1, 2007 another buddy i trusted that works for Ford and comes across good, used parts on occasion otherwise, i probably would have just gambled on some from ebay http://homepages.udayton.edu/~mertzgea/100_0977.JPG I still haven't figured out what sort of carb to use. I like q-jets, but hear they don't respond too well to the blow-through modifications Quote Link to comment Share on other sites More sharing options...
Rally Pat Posted August 1, 2007 Report Share Posted August 1, 2007 hook a brotha up looks good so far, good luck. Quote Link to comment Share on other sites More sharing options...
Scotty2Hotty Posted August 1, 2007 Report Share Posted August 1, 2007 I've collected all the parts for a v8 turbo setup for a traditional pontiac engine (455, probably) Someone on here have an old chevy or ford v8 that I could talk to? I'd love to drop by some time and look at it, get opinions...thoughts etc This should be a fun build (two big Holset diesel turbos....i've got the manifolds mostly done already) Hope you've either A. Got a good hookup on Pontiac parts B. Have $$$$$ falling out of your wallet, cause a 455 Pontiac ain't cheap to build. But the 400 Ram Air heads flow some nasty CFM #'s from the factory not to mention after they've been opened up. Good luck. Quote Link to comment Share on other sites More sharing options...
Dave1647545494 Posted August 1, 2007 Report Share Posted August 1, 2007 another buddy i trusted that works for Ford and comes across good, used parts on occasion otherwise, i probably would have just gambled on some from ebay http://homepages.udayton.edu/~mertzgea/100_0977.JPG I still haven't figured out what sort of carb to use. I like q-jets, but hear they don't respond too well to the blow-through modifications enclose the entire carb in a pressure box then you won't need anything fancy Quote Link to comment Share on other sites More sharing options...
baron_ Posted August 1, 2007 Author Report Share Posted August 1, 2007 hum I've got 8 455 blocks, 3 400 blocks and probably 20 sets of heads enough new parts to build 2 or 3 engines, so that isn't much of a problem Been collecting this stuff for a long time, whenever I see it It's getting awful hard to find I've had 400's and 455's....and there's nothing like the torque of a 455 anyways, I thought several modifications needed to be made to a blow-through carb? (not to mention the added hat) I've been looking at those 'mighty demon' blow through carbs, but i'd listen to cheaper options Quote Link to comment Share on other sites More sharing options...
Skinner Posted August 2, 2007 Report Share Posted August 2, 2007 I want to say ATI has a carb setup that they sell to handle boost for there pro chargers. It should work for your setup or find out what has been down to them to modify your own. Quote Link to comment Share on other sites More sharing options...
Dave1647545494 Posted August 2, 2007 Report Share Posted August 2, 2007 you can blow through a carb 2 ways the first is with a hat mounted right to the top of the carb to do it this way you need the carb to be made special so it doesn't blow fuel out around the throttle shafts and whatnot the other way you enclose the entire carb in a sealed box and pressurize the entire assembly this lets you use a standard carb with a rrfpr hth Quote Link to comment Share on other sites More sharing options...
baron_ Posted August 2, 2007 Author Report Share Posted August 2, 2007 i'm not at all familiar with the pressurizing box method, but it sounds interesting I almost went with an ATI procharger system instead But 'cheap' appeals, just to show someone that it can be done So far, I've got $900 in everything.... the procharger would be an easy 3,000 or 4,000 down Quote Link to comment Share on other sites More sharing options...
Dave1647545494 Posted August 2, 2007 Report Share Posted August 2, 2007 http://images.google.com/imgres?imgurl=http://static.summitracing.com/global/images/ven/norm/107.gif&imgrefurl=http://store.summitracing.com/egnsearch.asp%3FN%3D400107%2B317831%26autoview%3Dsku&h=59&w=125&sz=2&hl=en&start=0&um=1&tbnid=4kY7IjwWU5m16M:&tbnh=42&tbnw=90&prev=/images%3Fq%3Dcarb%2Benclosure%2B%26svnum%3D10%26um%3D1%26hl%3Den%26rls%3Dcom.microsoft:en-us:IE-Address%26rlz%3D1I7SUNA%26sa%3DG I'm still looking for a picture Quote Link to comment Share on other sites More sharing options...
Dave1647545494 Posted August 2, 2007 Report Share Posted August 2, 2007 http://images.google.com/imgres?imgurl=http://www.capa.com.au/pics/vortech_performance_carby2_big.jpg&imgrefurl=http://www.capa.com.au/vortech_performance_carby.htm&h=315&w=467&sz=33&hl=en&start=0&um=1&tbnid=xAqgctsHthsKZM:&tbnh=86&tbnw=128&prev=/images%3Fq%3Dcarb%2Benclosure%2Bvortech%26svnum%3D10%26um%3D1%26hl%3Den%26rls%3Dcom.microsoft:en-us:IE-Address%26rlz%3D1I7SUNA%26sa%3DG try this one Quote Link to comment Share on other sites More sharing options...
baron_ Posted August 2, 2007 Author Report Share Posted August 2, 2007 very very interesting thanks for posting - hadn't seen that although, i might wonder if buying a specially built carb is easier in the long-run a buddy has a new mighty demon 750 blow through for $500 that's a bit tempting Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted August 2, 2007 Report Share Posted August 2, 2007 you can blow through a carb 2 ways the first is with a hat mounted right to the top of the carb to do it this way you need the carb to be made special so it doesn't blow fuel out around the throttle shafts and whatnot the other way you enclose the entire carb in a sealed box and pressurize the entire assembly this lets you use a standard carb with a rrfpr hth true story, but they also have a few different carbs too do it. like this one..http://i5.photobucket.com/albums/y196/gearhead559/100_0827.jpg that carb is about 1100 great place for info on this stuff is turbostangs.com thers a complete section on blowing thru a carb , and how too mod a normal one, for blow thru duty. Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted August 2, 2007 Report Share Posted August 2, 2007 http://www.theturboforums.com/smf/index.php?PHPSESSID=c9bc0fb8ae3249425d01085071e2b44f&board=13.0 tons of great info here. Quote Link to comment Share on other sites More sharing options...
baron_ Posted August 2, 2007 Author Report Share Posted August 2, 2007 I don't guess there's someone on these boards that likes to build blow-through carbs? I've got other worries at the moment...and would like to not be worrying about whether the carb is right...when i fire this sucker up (there will be plenty of other variables messing up...I'd like to eliminate this one) Quote Link to comment Share on other sites More sharing options...
Dave1647545494 Posted August 3, 2007 Report Share Posted August 3, 2007 use the box then Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted August 3, 2007 Report Share Posted August 3, 2007 I don't guess there's someone on these boards that likes to build blow-through carbs? I've got other worries at the moment...and would like to not be worrying about whether the carb is right...when i fire this sucker up (there will be plenty of other variables messing up...I'd like to eliminate this one) look , either way. you just cant bolt a carb on expect it too be right. it takes lots of tuning, too get them right. the right person can get them close, but you still have too do some fine tuning. Quote Link to comment Share on other sites More sharing options...
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