67mm=700hp???
67mm=700hp??? my current setup is a 370 iron block, with stock 6.0 heads, 15cc dish pistons, 226-228@588-588 114lsa. sheet metal intake. with 55lb injectors. stock trottle body. running thro a t56. the turbo is a t67, that came out of a sts kit. im making it a front mount of course. but should i be able to see 700+hp with this setup, or should i get a t76????
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That said, I don't think a 67 mm is a great match for 370 cid.
Mike
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I seriously think there was something wrong with your setup. I'm running 17 psi from my T76GTS on 388 cid with the 40 mm wastegate wide open. I've been as high as 23 psi. I'm not alone either. We were easily able to get 18 psi from another T76GTS on 377 cid on an engine dyno, and it wasn't max'd out. The larger 4276 should be able to do at least 25 psi only 370 cid.
That said, I don't think a 67 mm is a great match for 370 cid.
Mike
That said, I don't think a 67 mm is a great match for 370 cid.
Mike
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Verdad Gallardo Ya I thought the gt42-76 was better/bigger than the gts76 and have heard it make allot of boost on stock to 370ish cubes. Not calling bullshit though b/c he knows his stuff for sure. Every combo is different and psi is a measure of restriction, jsut ask him how much power he made is a better question. Especially with a well laid out t6 flange 
Either way thought the t-67 is way too small for a 346 and like I already mentioned is even small for a 346 if its pushed at all.
Either way thought the t-67 is way too small for a 346 and like I already mentioned is even small for a 346 if its pushed at all. 
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My T66 was done at 8-10psi on my 6.0L hear in Co @6600' elv, would make about 14 in Ca. I don't know how much better a T67 is vs a T66 but it cant be much. With a T76 @16PSI I just made 581HP/690LB un corrected RWHP hear in Co 8500+DA. The corrected sea level numbers were 712/850LB. That would be at the same 16psi.
I seriously think there was something wrong with your setup. I'm running 17 psi from my T76GTS on 388 cid with the 40 mm wastegate wide open. I've been as high as 23 psi. I'm not alone either. We were easily able to get 18 psi from another T76GTS on 377 cid on an engine dyno, and it wasn't max'd out. The larger 4276 should be able to do at least 25 psi only 370 cid.
That said, I don't think a 67 mm is a great match for 370 cid.
Mike
That said, I don't think a 67 mm is a great match for 370 cid.
Mike
1st hand from Harlan and Stenod. Ran the car at the track also.
Swapped to an S88 and went faster with less boost.
I'm just posting what I've seen.
Kyle
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So how fast did the 370 with a "max'd out" 4276 go? If it were anything less than 150, there was something very wrong. Most know that I've gone 146 at full weight with my T76GTS at minimum boost on 388 cid. Also, there are plenty of solid 8 second Mustangs running either the 76GTS or GT4276.
I'd be curious if any of the following were wrong with that combo (I've seen all of these reduce boost/power):
- Leaking BOV
- Weak WG spring
- Damaged turbine or compressor wheel
- Restrictive muffler or exhaust piping
- Restrictive intercooler or intake piping/MAF/TB
- Too small an air filter
Either way, there's enough data out there to prove that a 4276 is capable of well over 13 psi on 370 cid.
Mike
I'd be curious if any of the following were wrong with that combo (I've seen all of these reduce boost/power):
- Leaking BOV
- Weak WG spring
- Damaged turbine or compressor wheel
- Restrictive muffler or exhaust piping
- Restrictive intercooler or intake piping/MAF/TB
- Too small an air filter
Either way, there's enough data out there to prove that a 4276 is capable of well over 13 psi on 370 cid.
Mike
So how fast did the 370 with a "max'd out" 4276 go? If it were anything less than 150, there was something very wrong. Most know that I've gone 146 at full weight with my T76GTS at minimum boost on 388 cid. Also, there are plenty of solid 8 second Mustangs running either the 76GTS or GT4276.
I'd be curious if any of the following were wrong with that combo (I've seen all of these reduce boost/power):
- Leaking BOV
- Weak WG spring
- Damaged turbine or compressor wheel
- Restrictive muffler or exhaust piping
- Restrictive intercooler or intake piping/MAF/TB
- Too small an air filter
Either way, there's enough data out there to prove that a 4276 is capable of well over 13 psi on 370 cid.
Mike
I'd be curious if any of the following were wrong with that combo (I've seen all of these reduce boost/power):
- Leaking BOV
- Weak WG spring
- Damaged turbine or compressor wheel
- Restrictive muffler or exhaust piping
- Restrictive intercooler or intake piping/MAF/TB
- Too small an air filter
Either way, there's enough data out there to prove that a 4276 is capable of well over 13 psi on 370 cid.
Mike
All of the above was the same for the GT42 and the S88... only thing that was changed was the turbo.....
The Turbo compressor wheel did contact the housing on the 2nd track outing.... the 1st outing was only a 10.7....
Kyle
my current setup is a 370 iron block, with stock 6.0 heads, 15cc dish pistons, 226-228@588-588 114lsa. sheet metal intake. with 55lb injectors. stock trottle body. running thro a t56. the turbo is a t67, that came out of a sts kit. im making it a front mount of course. but should i be able to see 700+hp with this setup, or should i get a t76????
I made 630 rwhp on a T67 behind a 402. It was an oddball deal, weird set of parts, but it made 730 rwtq.
It would spike to 12#s, and not hold more than 8-9. That was with the wastegate completely shut fun street car, but when the customer gets more money, he will probably get a T76 ~. Again, he came across the shortblock for next to nothing, so sure its not ideal, I just installed the parts and tuned it, but we were way outta turbo
It would spike to 12#s, and not hold more than 8-9. That was with the wastegate completely shut
fun street car, but when the customer gets more money, he will probably get a T76 ~. Again, he came across the shortblock for next to nothing, so sure its not ideal, I just installed the parts and tuned it, but we were way outta turbo 9 Second Truck Club
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From: Colorado Springs, Co/ Central, Ca