Almost_There_1

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

inspector12

6266 or 6766 will easily do it and very quick to spool on a 400CI motor. Ran 67's on my 402 back in 06-07 ran fantastic for a street car for sure. GL!

SBCGENII

I rode in a camed 5.3 with twin on3 70/65s and he had to slow the boost ramp in. He was running street tires though. If the turbos are good and for a good price I would go for the 67/66s. The on3s make good power and are super quiet FYI. They won't make as much power or spool as fast but they have their place out there for street cars.

Almost_There_1

6766 it is! Now to figure out a fuel setup.