debating ditching on3 70's on max effort 4.8.. thoughts?
debating ditching on3 70's on max effort 4.8.. thoughts? The more I think about it, the mire I want to run more efficient turbos, I have a grasp on single turbo stuff, but im a little lost on turbines and AR's on twin applications and especially small cubes. I have a few turbos in mind and all should make 1200whp for future plans which will be a forged 290-347ci.
Quick run down
4.8 shortblock from 2010 truck
Stock 853's milled .030 (9.5:1?)
Kmj studs
ARP Rod bolts
Holley Hi Ram
218/218 112*
Th400 with brake
PTC Converter
3200lb race weight
And obviously twinn turbos.
Currently have a set of On3 70's which have a 65mm turbine amd .68AR
The turbos I have in mind
Turbonetics Tc66 which have a 68mm turbine and .81AR housing
Turbonetics 6665 "Lety" 66mm comoressor, 65mm turbine and .81AR housing
Precision 63/68 which can be had in .68 or .81AR
Borgwarner s362 with 68mm turbine and .81AR
Billet S462 ETR-HO with 68mm turbine and .88AR
What do you guys think? I wajt something that will come up quicm which shouldn't be that difficult on a 2 step and brake.
Quick run down
4.8 shortblock from 2010 truck
Stock 853's milled .030 (9.5:1?)
Kmj studs
ARP Rod bolts
Holley Hi Ram
218/218 112*
Th400 with brake
PTC Converter
3200lb race weight
And obviously twinn turbos.
Currently have a set of On3 70's which have a 65mm turbine amd .68AR
The turbos I have in mind
Turbonetics Tc66 which have a 68mm turbine and .81AR housing
Turbonetics 6665 "Lety" 66mm comoressor, 65mm turbine and .81AR housing
Precision 63/68 which can be had in .68 or .81AR
Borgwarner s362 with 68mm turbine and .81AR
Billet S462 ETR-HO with 68mm turbine and .88AR
What do you guys think? I wajt something that will come up quicm which shouldn't be that difficult on a 2 step and brake.
9 Second Club
Joined: Nov 2003
Posts: 13,616
Likes: 185
From: Norn Iron
BW 362FMW ?
No matter which unit, the lighter billet wheels dont cost a huge amount more, so would be worth going for.
I'm sure Forced Inductions or Work turbochargers, or any similar guys can build you units to any spec you want, with any choice of turbines and housings.
Although at least with the Garrett, T'netics, Precision ranges you will have a much wider selection of turbine housings to play with compared to the BW's
No matter which unit, the lighter billet wheels dont cost a huge amount more, so would be worth going for.
I'm sure Forced Inductions or Work turbochargers, or any similar guys can build you units to any spec you want, with any choice of turbines and housings.
Although at least with the Garrett, T'netics, Precision ranges you will have a much wider selection of turbine housings to play with compared to the BW's
BW 362FMW ?
No matter which unit, the lighter billet wheels dont cost a huge amount more, so would be worth going for.
I'm sure Forced Inductions or Work turbochargers, or any similar guys can build you units to any spec you want, with any choice of turbines and housings.
Although at least with the Garrett, T'netics, Precision ranges you will have a much wider selection of turbine housings to play with compared to the BW's
No matter which unit, the lighter billet wheels dont cost a huge amount more, so would be worth going for.
I'm sure Forced Inductions or Work turbochargers, or any similar guys can build you units to any spec you want, with any choice of turbines and housings.
Although at least with the Garrett, T'netics, Precision ranges you will have a much wider selection of turbine housings to play with compared to the BW's
TECH Regular
Joined: Feb 2010
Posts: 433
Likes: 0
From: Louisville
If u already have the on3's try them...don't get me wrong something like bw s362 or 366 may be a better all around quality turbo and you will more than likely make more horsepower per psi but for the price of the on3's and a potential to make 1200 rwhp with a set I would say screw it and use them
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
9 Second Truck Club
iTrader: (17)
Joined: Sep 2006
Posts: 3,672
Likes: 9
From: Colorado Springs, Co/ Central, Ca
With the 6.0 would the 70's do 1200 to the wheels? A guy maxed the 76 at 600whp on a 6.0. With the 4.8 I think it would be dooable but I think you'll need 76's for your goal with the 6.0.
9 Second Truck Club
iTrader: (17)
Joined: Sep 2006
Posts: 3,672
Likes: 9
From: Colorado Springs, Co/ Central, Ca
They might but you don't need 1200 RWHP to run low 5's at 3200 lbs. Just depends if you're after RWHP numbers or track numbers I guess. The 4.8 will likely make more pk hp at 30+ psi of boost but avg power under the curve will be way down vs the 6.0 IMO. I think the 4.8 will need to leave around 4800 to 5K rpm and spin 7500 to get it done. A set of billet 62's would work really well on the 4.8 but they are not cheap. Those 70's on a 6.0L with the 218 cam he has would work with that converter, and have power to burn.
They might but you don't need 1200 RWHP to run low 5's at 3200 lbs. Just depends if you're after RWHP numbers or track numbers I guess. The 4.8 will likely make more pk hp at 30+ psi of boost but avg power under the curve will be way down vs the 6.0 IMO. I think the 4.8 will need to leave around 4800 to 5K rpm and spin 7500 to get it done. A set of billet 62's would work really well on the 4.8 but they are not cheap. Those 70's on a 6.0L with the 218 cam he has would work with that converter, and have power to burn.
I agree on your first sentence!
If I were to keep the 4.8 , which billet 62's do you think?
9 Second Truck Club
iTrader: (17)
Joined: Sep 2006
Posts: 3,672
Likes: 9
From: Colorado Springs, Co/ Central, Ca
Precision billet 62/62's seem to make good power if you can get a set that will last. I've seen quite a few of them blow up. A good pair of billet 62's prob would make similar power to a billet S480. Jose might be able to do a custom set of billet Tnetics but won't be cheap. I would keep turbine around 62 and a tight Ar. They can build you a converter that will spool the 70's but it's going to be high strung and sloppy driving around. You might light the 62's with a 3600 but It will prob still be soft in the 60' with less than 4500 rpm launch.
9 Second Club
Joined: Nov 2003
Posts: 13,616
Likes: 185
From: Norn Iron
Precision billet 62/62's seem to make good power if you can get a set that will last. I've seen quite a few of them blow up. A good pair of billet 62's prob would make similar power to a billet S480. Jose might be able to do a custom set of billet Tnetics but won't be cheap. I would keep turbine around 62 and a tight Ar. They can build you a converter that will spool the 70's but it's going to be high strung and sloppy driving around. You might light the 62's with a 3600 but It will prob still be soft in the 60' with less than 4500 rpm launch.
Spool was basically the same on the engine, but the 6266CEA made a lot more power. Although that was against the old 6262 cast wheel unit
