with the vacuum hose ON?? I measured it yesterday and it was 32psi. Sounds kind of low to me, anyone have any opinions? Stupid me forgot about measuring it with the hose off, guess I'll have to go back and do it again (wasn't my gauge). Thanks

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Kevin Irving
85 Trans Am WS-6, 305 TPI, custom burned '86 PROM with '87 "165"ECM, Accel Supercoil & 8.8 Wires, MSD 6AL, Aluminum Driveshaft, TB Coolant Bypass, Ported Plenum, Modified MAF, Syclone Fuel Pump, JET Airfoil

15.556 @ 86.65mph, Nov 10, 2000.... I know it sucks.. but it will get better!

http://www.geocities.com/transam85tpi/

Member - The Tidewater Trans Am Club, Norfolk VAhttp://www.geocities.com/ttacva/

 

I just checked my fuel pressure tonight, it's at 37 psi at idle and as soon as the rpms go up so dose the pressure. With the vacuum line off it's at 47 psi

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92 Z/28 L98 3.23 posi
Hotchkis springs,lower control arms,panhard rod, tie rod sleeves,strut tower brace.Wonder bar. Bilstein struts and shocks.
AGR steering box&pump.
Wheels; Simmons om-17, 17x9.5 Firestone 275x40x17 FZ50 EP.
K&N air filters, airfoil. Alum drive shaft, MSD coil,MSD6AL.
NEW
Ported Plenum ,Ploshed inside runners
and intake ports, Gutted air box.
131,000 miles
Best times (run on drag radials)
60' 1.963 (3-9-02)
1/8 8.839 (2-11-01)
1/4 13.851 (2-11-01)
mph 98.74 (3-9-01)
fasted I have had it
135 mph. (Apr-?-1998)

 

I can't say for sure about a 305, but on a 350, stock pressure is 42, this is with the line off, the correct way to check. There is a lot of performance to be gained by taking the pressure up to 50, according to the FAQ sections, once can gain as much as 19hp and 58lbs. But make sure you check it with the line off and clogged. Hope this helps.

------------------
87 GTA 350 L98
K&N filters, beefed up TH-700r4, Accel Manifold, Ported Plenum and Runners, Fuel Press. Regulator 49.5psi, air foil, modified MAF, SLP cold air box, Hypertech Thermomaster chip w/160 thermostat, MSD 6AL and Blaster 3, B&M shift kit, Moser Ford 9in Rear with Richmond 3.50 and locker, Edlebrock TES headers and Cat Back, Poly suspension and Koni in the front

Fastest ET's
Stock-0-60 6.8, 1/4 15.0 @ 98
Best-0-60 4.7, 1/4 12.8 @ 112
Norm-0-60 5.2, 1/4 13.2 @ 108

 

That is from TPIS from I believe a 383 engine that was severely fuel limited.They have a history of misleading like that to sell products.You might get 10hp,10lbs,on a 305.
BTW,what other mod(s)do you have done to your car not in your sig,that makes you run a best of 12.8@112.Nitrous?Other?

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1990 Trans Am GTA,Black/Black Leather,350,auto 3.23,Dual Cats,
SLP Package,SLP Torque Converter/Shift Kit,Fastchip,GSC's
G-tech 0-60 5.1 1/4mile 13.6@104
member www.transamgta.com
Previous Thirdgen
1986 Camaro IROC-Z

[This message has been edited by black5.7GTA (edited March 25, 2001).]

 

Cool, thanks guys. Guess it's time to start shopping for an AFPR!

------------------
Kevin Irving
85 Trans Am WS-6, 305 TPI, custom burned '86 PROM with '87 "165"ECM, Accel Supercoil & 8.8 Wires, MSD 6AL, Aluminum Driveshaft, TB Coolant Bypass, Ported Plenum, Modified MAF, Syclone Fuel Pump, JET Airfoil

15.556 @ 86.65mph, Nov 10, 2000.... I know it sucks.. but it will get better!

http://www.geocities.com/transam85tpi/

Member - The Tidewater Trans Am Club, Norfolk VAhttp://www.geocities.com/ttacva/