Help Id this turbo.

[Steve V]

This not one of mine,out of one of my customers car.

 

[bison]

Looks like a t67 compressor and a 76p trim with an old Garrett compressor cover

 

[Steve V]

Good with a 300o stall? Said it spooled like mad. Good to what et? Not looking for more than mid 11's.

 

[bison]

I'd go with a much smaller turbo. The 6776 has been 9.80's with the late s cover. It won't spool well with mist 3000 stall converters either.

 

[getdowngranny]

I'd go with a much smaller turbo. The 6776 has been 9.80's with the late s cover. It won't spool well with mist 3000 stall converters either.

Bison, so youre saying that this turbo pretty much equates to a 6776? This turbo on my car with the billet 9/11 spooled up quik on a completly stock longblock , stock cam, and 42.5 injectors. Steve V is rebuilding the motor now using mostly stock parts with the 210/215 .516/.516 110 L/S roller cam kit from full throttle. The car already has Alky and all the other supporting mods. Will this turbo be good for this set-up?

 

[Steve V]

Jose..if it spooled quick then the convertor maybe higher than 3200....I does have a 3000 stamp on it though.

 

[bison]

Bison, so youre saying that this turbo pretty much equates to a 6776? This turbo on my car with the billet 9/11 spooled up quik on a completly stock longblock , stock cam, and 42.5 injectors. Steve V is rebuilding the motor now using mostly stock parts with the 210/215 .516/.516 110 L/S roller cam kit from full throttle. The car already has Alky and all the other supporting mods. Will this turbo be good for this set-up?

If the wheels are as I see them it will support 9.80's with a purpose built engine. It would take over 9:1 CR, really good flowing heads, 9.5" PTC and a different cam and valvetrain setup. I'd expect 10 teens with boost at 29-30 with decent iron heads on a race gas tune on a 8:1 engine. The turbo will be ok on your setup. It really wants to be in the high 20's boost and 75lbs/min or so flow to make a lot of power before it starts getting tapped out. It takes quite a bit of mods to get that kind of performance though. On a stock longblock it's not even close to ideal. Hard to get over 55lbs/min on a stock cam/head engine. There are a lot of other turbos that are out there that will make more power and not be near the surge line and spool significantly faster than a 6776 on a stock longblock. With the combo your about to run you need to have a flash stall around 5100 and couple by 135mph or you are leaving a lot on the table.

 

[getdowngranny]

If the wheels are as I see them it will support 9.80's with a purpose built engine. It would take over 9:1 CR, really good flowing heads, 9.5" PTC and a different cam and valvetrain setup. I'd expect 10 teens with boost at 29-30 with decent iron heads on a race gas tune on a 8:1 engine. The turbo will be ok on your setup. It really wants to be in the high 20's boost and 75lbs/min or so flow to make a lot of power before it starts getting tapped out. It takes quite a bit of mods to get that kind of performance though. On a stock longblock it's not even close to ideal. Hard to get over 55lbs/min on a stock cam/head engine. There are a lot of other turbos that are out there that will make more power and not be near the surge line and spool significantly faster than a 6776 on a stock longblock. With the combo your about to run you need to have a flash stall around 5100 and couple by 135mph or you are leaving a lot on the table.

Thanks for the info Bison. I think for the time being im going to stay with this turbo since the car will be barely driven anyways. I am happy we were able to finally identify the turbo. This was one of those deals when you buy a car and you take someone's word for the parts installed and the previos owner never had any info on the turbo.

 

[bison]

Thanks for the info Bison. I think for the time being im going to stay with this turbo since the car will be barely driven anyways. I am happy we were able to finally identify the turbo. This was one of those deals when you buy a car and you take someone's word for the parts installed and the previos owner never had any info on the turbo.

We didn't identify for sure it since you didn't measure the wheels specifically but based on the dimensions I see I'm assuming it is what I stated. Measuring the wheels directly is better for identification. With heads and cam that turbo will be strong between 5000 and 5700@27-28 psi.