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Discussion Starter · #1 ·
Ok guys, here's the skinny:

Fully built bottom end (Carillo h-beams, CP pistons, arp everything)
Race/street ported head, +1mm Ferrea Valves, shimless buckets, 272/264 cams
74 GTS turbo (.81 A/r)
Greddy 4-Row
AEM
HKS Wastegate
NOS 75 hp wetshot (AEM controlled)

Whatcha thinkin at:

15 psi (93 oct)
24 psi (C16)
35 psi (c16)

Winner recieves a free #5 piston that was melted at 30 psi in my old engine!! :gapteeth:
 

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hardtopper
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15psi 93oct = 540

24psi c16 = 687

35psi c16= 872


My guesses. when do we see the actual numbers?

edit:
shit didn't see the Nitrous

15Psi 93= 593

24Psi c16= 746

35Psi c16= 921
 

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Discussion Starter · #3 ·
Pick the car up next week from Polk performance in Little rock! I will fill everyone in :sadance:
 

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Senior Spooler
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MissSupra said:
Ok guys, here's the skinny:

Fully built bottom end (Carillo h-beams, CP pistons, arp everything)
Race/street ported head, +1mm Ferrea Valves, shimless buckets, 272/264 cams
74 GTS turbo (.81 A/r)
Greddy 4-Row
AEM
HKS Wastegate
NOS 75 hp wetshot (AEM controlled)

Whatcha thinkin at:

15 psi (93 oct)
24 psi (C16)
35 psi (c16)

Winner recieves a free #5 piston that was melted at 30 psi in my old engine!! :gapteeth:
6sp or auto? Sorry if I missed it....
 

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Discussion Starter · #5 ·
My bad, its a six speed
 

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Senior Spooler
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15psi 475 ish
24psi 650ish
35psi 850-875ish ......on the bottle add 50-65hp. :)

Sounds like a wicked street setup .....Keep the piston :)
 

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Are you planning to spray the car at all 3 boost levels??
 

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Discussion Starter · #8 ·
Probably not on pump gas.
 

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I was going to say... :)

My guess?
Pump - mid 500s
24psi - w/ spray, just over 700
35psi w. the nitrous - 900ish
 

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Discussion Starter · #10 ·
Probably wont spray a whole lot period. Just for pulls against big cube V8's where i need to spool fast. :bigthumb:
 

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Discussion Starter · #11 ·
Well it made 494 at 16 psi but tuner said my .81 hot side was killin me with power nose-diving at 7200 rpm. Either swapping to a .96 or bolting on a gt42-76 today. more updates as warranted
 

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What about 24psi......and 35psi.......

I'm awful close on the 15psi, probably spot on....
 

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Discussion Starter · #13 ·
Upgrading to gt42-76.
 

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^Prob a better move, most with the .96 ar aren't too impressed with the spool at all :(
 

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Discussion Starter · #15 ·
Adrocktt said:
^Prob a better move, most with the .96 ar aren't too impressed with the spool at all :(
The move to the gt42?
 

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19in 795R HRE's FTW....
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The power shouldn't nose dive off with a .81. I'd like to see your graph!
 

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Discussion Starter · #17 ·
It weird cuz it did it on a dyno-dynamics and a dynojet. I dont know how to scan, but if you want i can snail mail then to ya. you could have them tuesday.
I was kind of surprised too. I thought an .81 was pretty standard fare for a 74gts.
This build has been very educational. I wish I lived closer to chandler az :tear:
 

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Robert, if you need help I can get your dynograph on the computer for Ryan to take a look at.

Good luck with the car, another quick Supra needs to get on the streets around here quick, being most of them have become dust collectors (the cars) in the past year or so. HA
 

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MissSupra said:
The move to the gt42?
Over the .96AR, yes, but Ryan's right, I haven't seen many 74 drop like a rock with a .81 on the hotside myself, though I'm far from the expert on that...
 
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