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Turbo make up for 2.08's on a 3.905" bore?

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Old 02-25-2009, 01:13 AM
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Default Turbo make up for 2.08's on a 3.905" bore?

I have searched and fully understand that 2.08" valves are too big for a
3.905" bore due to shrouding issues. My question is; will a turbo make up for some of the shrouding issues caused by the small bore? I found an awesome deal on a pair of World Products Warhawk 15* LS1X heads. The head specs are:
025250-2, Solid/Hyd Roller, 235cc, Manley Stainless, 2.080" x 1.600", 1.437" Dual 125# Seat, .600", 72cc

I'm asking because I'm putting together a forged 347 and have all the parts already, except heads. Added to the engine will be a STS turbo system with the GT67 upgrade, FMIC, meth and all the fuel system upgrades. Obviously, no matter how good the deal is, if it doesn't work it's a waste of money! Thanks for your help!
Old 02-25-2009, 02:32 PM
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No one has an opinion on this?
Old 02-25-2009, 06:26 PM
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Are you asking if a 2.08" valve 3.9" bore turbo motor will make more power than a 2.02" valve 3.9" bore naturally aspirated motor, then the answer is "yes".
Old 02-25-2009, 07:47 PM
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That's it in a nutshell, thanks!
Old 02-25-2009, 11:12 PM
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Works good on mine.
Old 05-13-2009, 08:46 AM
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Hmm would like to hear some more opinions.... I would think that shrouding on a larger 2.08 valve would not be greatly effected on a 347 as the air is being forced into the cylinders with forced induction?
Old 05-13-2009, 11:08 AM
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Based on my searches and some of the opinions here, I picked up a pair of Patriot 317's w/ 2.05/1.60's.
Old 05-13-2009, 12:47 PM
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I have those heads on my starquest and the 347 love them!!!!



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