BB70 or GT67?

[NEARING]

Both with P-trim, which would be more streetable?

I imagine they have the same power potential?

[REDS TTYPE]

non bb 70 was not that bad on the street Im sure a bb 70 would kick butt :rock:

[Bap30]

From what I have heard, the GT67 spools like a 60 turbo and has the power of a 70. The GT67 or BB70 should both work great on the street with the respective converters (at least a 3200 minimum for both, IMO).

[R.MERRITT]

BB70Q run pissa on the street! I won't use anything else. :goldcup:

[NEARING]

BB70Q run pissa on the street! I won't use anything else. :goldcup:

Single BB?

What converter do you run?

Would an Art Carr 3500 be enough?

Thanks.

[R.MERRITT]

Single BB T-70 Q .82 from Turbonetics. I run a 3500 stall 9/11 so you should be fine. You gonna run an .82 with the P trim? Probably come up on boost a little quicker than mine with the P.

[NEARING]

:fragez: Is there a waiting list for the GT67?

[Dominic Mizzi]

I just finished installing a customers 231 i built with 67 GTQ, mildly ported heads, small hyd roller, Joe L. chip, and a 3500 9/11. It's got all the basic upgrades fmic/50#'ers/thdp/atr exh/ ect... the test drive put a big grin on both our faces :racer: :top:

It spools very well and i am pleased with its low boost street manners, so is my customer, no complaints here. I will definately use this turbo more in the future.

[86brick]

50# injectors sound a bit on the small side for a 67 GTQ.....

[Dominic Mizzi]

OK here's why we use 50#'ers

My customer is not trying to set any HP records, he just wants a good running pump gas cruiser. If you want to make good HP with these cars you need a big turbo that has a good compressor map down low and puts volume in the intake at low boost (15#). How else can you make HP on pump gas without more boost (causing detonation) or alky injection (which customer does not want) then the only way to make more power on pump gas is a bigger turbo right?

My point is at 15# with the combo mentioned, the customer does not need anything more than 50#'ers, since he's only going to run pump gas. Also these injectors work well on the street and he has the ability to make a good 580/600 hp wich will put the car mentioned in the low11's/hi 10's. If he ever want's to make more power than that,he can put a 7th on it. 50#'ers have VERY GOOD street manners.

That combo with the 67 GTQ and 50#er's will make more power at 15# boost than ANY combo with a smaller turbo on pump gas. That's the reason why we only use 50#er's, we just don't need any more fuel.

[Taffy]

BBS are overrated. The 45a (67GTP) is a good choice, no matter how you make it!!!!!

[salvageV6]

Double Ball Bearing GT70 P trim here, 3200 stall street car.

Not over-rated. :elefant: :marchmell

[Bruce]

My point is at 15# with the combo mentioned, the customer does not need anything more than 50#'ers, since he's only going to run pump gas. Also these injectors work well on the street and he has the ability to make a good 580/600 hp wich will put the car mentioned in the low11's/hi 10's. If he ever want's to make more power than that,he can put a 7th on it. 50#'ers have VERY GOOD street manners.

That combo with the 67 GTQ and 50#er's will make more power at 15# boost than ANY combo with a smaller turbo on pump gas. That's the reason why we only use 50#er's, we just don't need any more fuel.

From the cars I've tuned on, your out of injector with 50s at 15 PSI, if your running a 90% DC, at WOT.
If your running 50s static, and your risking headgaskets, from the lean cycle as the injectors go erratic, as they transistion to going static.

As far a running pump gas, and trying to make HP that means running slightly richer then you would with race gas, and using the *excess* fuel to keep the chamber temps down enough to keep the motor out of detonation.

The only way I've gotten a 7th injector to be really correct is by running it full time, and that takes manifold and chip work to get right.

There are no up-sides to trying to make decent HP on tiny injectors, IMB.

[Dominic Mizzi]

Sorry,

I don't think a 67-GTQ at 15#'s will put a set of 50#'ers at 90% duty cycle.
Remember were not trying to make any more power than what pump gas can support, so why do we need any more than a 50# injector? From what i've learned playing with 50#'ers if you try and run them static and you shut your car off you'll never get it started up again unless you bleed the pressure to them. i would never try to run an injector static.

Also, i have never had a problem with 7th injectors.

[R.MERRITT]

What's the outcome? 70 or 67? :essen:

[Taffy]

What's the outcome? 70 or 67? :essen:

Russ, are those Turbonetics turbos in your signature? :rock:

[R.MERRITT]

Yes, that's all I run. I've got some Limit stuff before for customer/friends but T-netics is all I put on mine.

[Taffy]

Sweet. To tell you the truth, I do not know anyone that is dissatisfied with the T'Netic's turbos. They are some great guys. They build great turbos. They are just a little behind the curve in the Buick world. Too bad the world does not revolve around the TR........

[NEARING]

Going with the 67 and a Q trim.

:marchmell

[Taffy]

Going with the 67 and a Q trim.

:marchmell

Good choice. Let us know how you like that mad man! :thrashi: