Precision 6266 Vs. 6466 (Goal - 700whp)
- Thread starter Clean WHP
- Start date
Terry we just did 700whp @26 psi on a ACF 6266 Top Mount last week LOL.
Just pick a turbo that gives you 20% headroom over your current goal. 6266 g2 will certainly do that on E.
This was in 2015 with my testing. We have a customer with an ACF 6870 kit spooling like a 6266.
That was a bit ago though so Im sure you’re possibly close to spooling like him.Plus Im comparing a 6266 vs 6870. Theres a big difference between them.
Last edited:
Close? That's funny. 2400rpm is early enough for meThis was in 2015 with my testing. We have a customer with an ACF 6870 kit spooling like a 6266.
Plus Im comparing a 6266 vs 6870. Theres a big difference between them.
I know it was probably more like 27psi. Maybe it's going to max out at 725whp or something on a good day. But the 6466 can probably max out around 850whp. If you want 700whp no need to put an 850whp turbo on it for that.
I know it was probably more like 27psi. Maybe it's going to max out at 725whp or something on a good day. But the 6466 can probably max out around 850whp. If you want 700whp no need to put an 850whp turbo on it for that.
One thing I know - power begets power. It’s always easier to add more power when the car is built to accommodate more power. It’s the owners decision to fully utilize....
As "cookie cutter" or "not-as-cool-of-a-name-compared-to-6466" it is, you're gonna like the 6266 more.
I was in the same boat, and you can see what I went with. I know you, and you don't want to blow up your motor. The 6266 is more than enough power for you and your car. For what it's worth, I have a log in 4th gear hitting 17psi (target) at exactly 3000 RPMs. And that's with an off-the-shelf tune and no WGDC adjustment (at 60). It spools very well for a single turbo.
I was in the same boat, and you can see what I went with. I know you, and you don't want to blow up your motor. The 6266 is more than enough power for you and your car. For what it's worth, I have a log in 4th gear hitting 17psi (target) at exactly 3000 RPMs. And that's with an off-the-shelf tune and no WGDC adjustment (at 60). It spools very well for a single turbo.
Thanks for your input as always! Those are some very good points. The name isn't going to a play a big role in my decision by its just one of those little things... but on a more realistic topic, Would the 6466 really stress the motor more than the 6266? (if both turned up to 700WHP for example) I would think the 6466 would make that power at slightly lower boost levels, and later in the powerband / hold the power out to redline a little more efficiently. I could be completely wrong but I feel like that would place less stress on the motor esp with the power coming in later.. maybe some more guys who have experience can chime in on this!
A topic I just thought about that could sway my decision towards the 6266 is the clutch choice. I want to run Spec stage 3+/SMFW rather than a twin disc, and a 6266 might help my keep the power levels a tad more modest for the clutch. Im sure a spec stage3+ and a 6466 would be no problem at all, but with what the 6466 is capable of I feel a twin disc suits it best and Im not really sure if I want to hash out the money on a twin disc or deal with its characteristics
So the more I think of it, the more a 6266 and Spec stage3+/SMFW set up fits my needs overall. Thanks to everyone for the input
My Doc Race kit is nearing completion and I changed from the 6266 to the 6466 last minute for the exact reasons you mentioned. I am X-drive so I will need to limit low end torque. That will also reduce stress on the engine particularly the rods. Might as well give up the low-end on the 6266 (which will be tuned out anyway) for the high-end of the 6466 which is power I can utilize. Highway pulls and roll racing is my thing so I made the change.
I am going Spec stage3+/SMFW and have absolutely no worries. I think the 6266 with its hard hitting low-end would actually cause more chance of slipping. The Spec stage3+/SMFW will get the job done either way unless you go crazy with a built engine crossing the 750 WHP barrier.
While you are on pump gas only you will make more power with the 6466 and a tiny bit less stress on the engine in theory as it will spool slightly later. I really don't think you are going to regret either decision.
Similar threads
