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Help me pick twins for a 403

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Old Aug 27, 2015 | 09:31 AM
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Almost_There_1's Avatar
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Default Help me pick twins for a 403

Hello. I'm more of a lurker than a poster. So I'm doing a "budget" TT build on my 02 z06. I finally got my motor done and now it's time to decide on some turbos. Initially, I was just going to get some eBay on3 70mm's since they're really cheap and then upgrade later if need be. But, I know someone selling a couple of sets of Precision turbos for cheap. So for some extra money, I can get some name brand stuff.

1st set: 2 PT6262, .68ar, ball bearing, billet comp wheel

2nd set: 2 PT6766, .81ar, ball bearing, billet comp wheel.

Specs on my motor:
Lq9 403
Mahle forged piston -12cc (10.6:1cr with 64cc heads)
Eagle H Beam rods w/ ARP 2000 rod bolts
Eagle 4340 4.00" crank
PRC stage 2.5 243's
Holley hi ram
E85
Cam to be spec'd by Martin @ Tick once I decide on turbos.

Goal: 1000whp (typical, I know)


So please help decide. And before someone suggest Borg Warners, I had looked in to the s366's and I think they are physically to large with the amount of room I have to work with. With that being said, I have no idea how big the PTs are but I know the ON3 70's are relatively small. Thanks in advance!


Eric
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Old Aug 27, 2015 | 01:04 PM
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Orr89rocz's Avatar
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6766 if good condition and price is right for the pair
Else on3 t70's will do it
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