My new build will be forged bottom, vortecs,atr headers,alky,custom cam,3k stall with built trans,RPM front mount, ported lower intake,52mm TB, roller rockers, 60# injectors, might be missing a few things. I have the option of a 62mm or 67mm turbo. Both .82 exhaust side. Both billet wheels. What one would you guys recommend?
Turbo upgrade question
- Thread starter Ls10
- Start date
randy merritt
Donating Member
Re: Turbo upgrade question
I am currently running a ball bearing 63 and love it. Spools very fast and has plenty of grunt for the street. I still have A/C. I briefly ran a ball bearing 72 (about one day), but it had way to much lag for my 2800 stall, and I put the 63 back in. I couldn't build any (zero) boost for a boost launch, and the turbo didn't spool until I hit second gear. The 72 did clear the A/C with a small spacer between the exhaust manifold and turbo. The installed 72 is shown in the picture.
I am currently running a ball bearing 63 and love it. Spools very fast and has plenty of grunt for the street. I still have A/C. I briefly ran a ball bearing 72 (about one day), but it had way to much lag for my 2800 stall, and I put the 63 back in. I couldn't build any (zero) boost for a boost launch, and the turbo didn't spool until I hit second gear. The 72 did clear the A/C with a small spacer between the exhaust manifold and turbo. The installed 72 is shown in the picture.
Aeroking
e.i.
Re: Turbo upgrade question
this is the PTE 72mm i used to have on my truck. I had an AC delete pulley, and it cleared the pulley and accessory bracket.
Remember, most people who use PTE turbos, are using the SyTy turbine housing (.85ar). Which is made to fit the trucks. If you are going to use a 3-bolt GN turbo with an adapter, or a T4 with an adapter. That is going to move the turbo around. Also headers, instead of stock manifolds will move the turbo around.
this is the PTE 72mm i used to have on my truck. I had an AC delete pulley, and it cleared the pulley and accessory bracket.
Remember, most people who use PTE turbos, are using the SyTy turbine housing (.85ar). Which is made to fit the trucks. If you are going to use a 3-bolt GN turbo with an adapter, or a T4 with an adapter. That is going to move the turbo around. Also headers, instead of stock manifolds will move the turbo around.
dgoodhue
BuSTeD 4.3
Re: Turbo upgrade question
Personally, I would probably do the 62mm.
The 67mm has the potential for 700+ hp at high boost levels. A 62 has the potential for well past 600 maybe 650hp. I am guess your built transmission isn't a 4L80e either. You probably don't have enough injector for a 67mm pushing high boost either. On the flip side you could go with 67 and have some head room if you wasn't to go faster later.
Personally, I would probably do the 62mm.
The 67mm has the potential for 700+ hp at high boost levels. A 62 has the potential for well past 600 maybe 650hp. I am guess your built transmission isn't a 4L80e either. You probably don't have enough injector for a 67mm pushing high boost either. On the flip side you could go with 67 and have some head room if you wasn't to go faster later.
Sean Krupa
Moderator
Re: Turbo upgrade question
Just run either Turbo! Goin from a 62 to a 67 is maginal. I went from a 63 to a 72 and didn't hardly notice a difference in Spool up. All in the Tune and Converter.
Just run either Turbo! Goin from a 62 to a 67 is maginal. I went from a 63 to a 72 and didn't hardly notice a difference in Spool up. All in the Tune and Converter.