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turbocharged 454



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Old 02-17-2009, 06:34 PM   #1
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turbocharged 454

well im gonna be swapping a 454 into my rig here pretty soon and was considering turbocharging it I dont know much about turbochargers on gasolienes so corrected me any where im erong but the turbo i was gonna use is an hx 35 off an 02 dodge diesel.........is this a good one to use.......and also does anyone have a turbocharged motor in their gasoliene rig if so can you post some pictures so I can get an idea of how its set up
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Old 02-17-2009, 06:50 PM   #2
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goodluck keeping it clean.
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Old 02-17-2009, 07:32 PM   #3
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what ?
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Old 02-17-2009, 07:45 PM   #4
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Keeping the dirt out of the turbo on a trail/mud rig would be hard. They are not like carbs. Have to be extremely clean. Thats why I'm not running one on my 406
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Old 02-17-2009, 09:16 PM   #5
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It can be done, but it will be a headache getting it tuned right and keeping it clean. Turbochargers beat the hell out of your bottom end, so it better be a built motor. It needs to be 9:1 or lower compression if you plan on running alot of boost. Look on youtube, and there should be a square body Chevrolet with a turbo, that is used for mud riding. If I were you, I would just build a naturally aspirated big block, with a came and heads............
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Old 02-18-2009, 07:22 AM   #6
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I think the biggest problem would be keeping the turbo cool enough not to play havoc on the bearings,on the trail you tend to be on and off the throttle so much that the turbo will spool up and the oil pressure will drop when you let off. a supercharger would be better for this application I would think.
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Old 02-18-2009, 10:24 AM   #7
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A superchager will not have to be spooled up like a turbo will also.............
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Old 02-18-2009, 04:19 PM   #8
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yea i know id love to super charge it instead but i dont have the money.....the only reason im gonna turbocharge it is cause I already have the turbo and can build almost everything else........but anyway would an HX 35 be good charger or would i need something bigger?
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Old 02-19-2009, 07:11 PM   #9
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i dunno bud you might wait on any mods like that untill you feel the power. a 454 makes crazy power just stock, slap a mild cam and gets some heads and intake on it and it will beat the hell outta any turbocharger and it will last you alot longer too. just my 2 cents though. good luck and post pics with whatever you end up doin.
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Old 02-19-2009, 07:33 PM   #10
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Running low boost on a stock engine is safe, the main issue is that you will need a dead solid fuel delivery system and proper air-fuel ratio under boosted conditions. I don't want to throw stones, but there is quite a bit of mis-information in the posts above. I recommend you reading all you can before you decide on going the turbo route, http://www.theturboforums.com/smf/index.php is a great site to lurk and read.

As far as the Holset turbo you have, you really need to decide how much power you want, and at what rpm. That HX35 might work but depending on your engine and the exhaust side A/R ratio it might spool at low RPM and be restrictive at the top end. If you want a stump-puller with boost right off idle, versus a head/cam/intake swap, no low end torque and lopey idle this might be good for you. The HX35 is currently popular with the four cylinder crowds making 300-500 hp.

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Old 02-21-2009, 10:21 AM   #11
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im debating between a 350 and a 454 now but im hopin for at least 400 horses but more in the ball park of 500 5000-6000 rpm is probably about as high as i need so i want something thats gonna spool around 2000 im put gonna probably put new heads cam intake and carb on it regardless you think the HX35 would make a better match to the 350? i also have an H2e but its huge i think the compressor wheel is like 65 or 66 mm and the exh housing is like a 21


by the way thanks for all the comments guys it really helpful
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Old 02-21-2009, 12:11 PM   #12
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Just build a 383stroker. you'll get 400hp+ eazy. And be way light. And way less cash and headachs.
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Old 02-21-2009, 12:49 PM   #13
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Just build a 383stroker. you'll get 400hp+ eazy. And be way light. And way less cash and headachs.
xxxxxx22222, i did about a year ago for my truck and i have no regrets what so ever, its all the power you want and lighter than a big block and you can get more for your money out of a stroker.
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Old 02-22-2009, 11:19 AM   #14
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well no offense but how is it gonna be cheaper to build a stroker? id then have to pay to get it bored and id have to buy a new rotating assembly to rather than just buy heads cam and carb then slap the free turbo on it or am I missing something?
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Old 02-22-2009, 06:13 PM   #15
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There no way a standard 454 well handle a turbo setup. You can probly build a mid 454 and still get 400hp eazy.

Turbo motor's = Big $$$$$$$$ For gas motor to handle a turbo you have to build a super strong lowerend and have a super good cooling setup plus a good intercooler.
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Old 02-22-2009, 06:18 PM   #16
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Old 02-22-2009, 11:22 PM   #17
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There no way a standard 454 well handle a turbo setup. You can probly build a mid 454 and still get 400hp eazy.

Turbo motor's = Big $$$$$$$$ For gas motor to handle a turbo you have to build a super strong lowerend and have a super good cooling setup plus a good intercooler.
How many gasoline turbocharged engines have you built or owned, may I ask? If the stock 454 rods, crank and pistons will handle 400 hp, why would adding a turbo make it not? Considering high rpms stress the reciprocating assembly more than low levels of boost does, you can actually get away with stock rods and crankshafts when doing a low boost engine. With low boost and a good fuel system and tune, a turbocharged 454 would last a long time. Just because it has a turbocharger on it, doesn't mean it has to run 25 psi and make 1000 hp. 5-7 psi on a stock 454 would make decent power at a low rpm, be cheap to build, have the manners of a stock engine when not under boost, and not need an intercooler.

I recommend you read on the subject before saying "there (is) no way a standard 454 well handle a turbo setup." Not trying to flame you, but there have been turbo kits for big block Chevys for years, heck I have seen them in everything from wreckers to motorhomes.

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Old 02-23-2009, 07:23 AM   #18
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I have an old 468cid w/square port heads and forged 11:1 pistons in it that I would be willing to part with. it's been on a cart in my shop for 18 years so it will need an overhaul.
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Old 02-23-2009, 09:19 AM   #19
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well no offense but how is it gonna be cheaper to build a stroker? id then have to pay to get it bored and id have to buy a new rotating assembly to rather than just buy heads cam and carb then slap the free turbo on it or am I missing something?
i mean not exactley cheaper but more reliable. you only will have to pay to get the block clearanced, and get an old 400 sbc rotating assembly and just have it checked out by your local machine shop. get you some pistons fro a couple hundred bucks as well or get shorter rods. that is the some what cheaper way into a stroker but there are 100 different ways to go with it
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Old 02-23-2009, 12:03 PM   #20
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i mean not exactley cheaper but more reliable. you only will have to pay to get the block clearanced, and get an old 400 sbc rotating assembly and just have it checked out by your local machine shop. get you some pistons fro a couple hundred bucks as well or get shorter rods. that is the some what cheaper way into a stroker but there are 100 different ways to go with it
Wouldn't you need to get the mains on the 400 crank turned down to the standard 350 journal size and then have the assembly re-balanced also?

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Old 02-23-2009, 12:38 PM   #21
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well yes of course i forgot to mention that but you can get the crank machined down and blanced for around 225. still not too bad.
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