looking for turbo info 425--455???

Old September 27th, 2014, 08:33 AM
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swat455
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looking for turbo info 425--455???

hello .. was looking for a thread on turbo 455s and was just wanting to know has anybody here done this? as Im thinkin of doing this to another 425 I have and poss efi
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Old September 27th, 2014, 12:23 PM
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One question, how much power are you looking to make?
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Old September 27th, 2014, 06:24 PM
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Old September 27th, 2014, 09:53 PM
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sleeper 65 4 door
http://realoldspower.prophpbb.com/topic273.html

rear engine pick up
http://realoldspower.prophpbb.com/topic260.html

there are more if you look
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Old September 27th, 2014, 09:54 PM
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well as far as power Im thinking of at least 550hp to the wheels adj boost/waste gate for idle and max power. multi port efi as too a blow thru carb. using the 425 block, crank, alum heads ,crosswind manifold, forged pistons of about 9 1/2 to 1 maybe 10 to 1 . gapless rings , oil squirters to pistons , crank mods , and well as far as pipe plumbing there is lots of room in the starfire im just stuck on if it will be a turbo, supercharger or diesel with turbo , or an ls with turbo... which do you think would the cheapest to build ,give me the most power, last the longest , and the most mpg.........just tired of filling up bottles and if im a car chase with bikers and what not. trying to run me off the road to get my gas . it would be better to have non stop boost than an empty or cold nos bottle in that case lol..................
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Old September 28th, 2014, 07:10 AM
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Scrap the 425 block, use a DX. A little more machining but much much stronger. Keep the 425 crank though.
I'd use Edelbrocks, a Victor, and 9.0:1. If you need help with the EFI let me know. If you plan on doing that anyway then I'd do it right away. That way you're not buying stuff twice.

Last edited by cutlassefi; September 28th, 2014 at 07:16 AM.
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