Alternative Port EFI Intakes This board is for tech discussions and questions about aftermarket port EFI such as the HSR, MR, SR, BBK, FIRST, etc.

just installed Stealth Ram

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Old Jun 6, 2005 | 08:45 AM
  #1  
Dans87GTA's Avatar
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Car: 1987 Pontiac Trans Am GTA
Engine: 355 Stealth Ram
Transmission: 700R4 w/ 2600 stall
Axle/Gears: 9-bolt 3.27
just installed Stealth Ram

i just got done with my Stealth Ram and im really happy with it i just have some questions first is what should the fuel pressure be set at because mine set at 45psi and the stock injectors are ticking pretty loud? second is the injector tick normal? i checked the air/fuel and it says rich all the time how can i lead it out? i have Accel 24lbs injectors should i put them in? the motor isnt stock i have other than Stealth Ram is .497/.502 .218/.224 cam ported heads (stock) headers full exhaust Ram Air and bored .030 over thanks for all your help
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Old Jun 7, 2005 | 07:35 AM
  #2  
Free Bird's Avatar
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From: Dale City, VA
Car: 91 GTA and 85 IROC
Engine: 355
Transmission: gear jammer
Axle/Gears: 4.11
If I had the thing apart there's really non reason not to put them in. Unless you can't make changes to the prom.
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Old Jun 7, 2005 | 09:19 AM
  #3  
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Car: 1987 Pontiac Trans Am GTA
Engine: 355 Stealth Ram
Transmission: 700R4 w/ 2600 stall
Axle/Gears: 9-bolt 3.27
ok but its already running rich will outting the 24lbs injectors lean them out the reason why i didnt put them in because i was out of town when i put it in and i left those at home the fuel pressure is set at 45psi where should it be anyone?
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Old Jun 8, 2005 | 11:57 AM
  #4  
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From: Columbus, Oh
Car: 07 Honda CR-V
Engine: Yes, there's one in there...
Transmission: One that shifts itself
Yes, the injectors will click and 45 psi is a good number to work with. Unless you are currently running injectors bigger than 24's, putting 24's in will make things worse (stock = 22's on a 350)

From what I've heard, the HSR will tend to lean out the A/F, because it flows more air. You could have a vacuum leak, or it could be the bigger cam is making less vacuum. I'm not familiar with MAF cars, so I don't know how much effect vacuum has.

You could lower the PSI as a crutch, but you're going to need to retune the engine to get things right.
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Old Jun 8, 2005 | 12:09 PM
  #5  
Thirdgen89GTA's Avatar
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From: Chicagoland Suburbs
Car: 1989 Trans Am GTA
Engine: LT1, AFR 195cc, 231/239 LE cam.
Transmission: M28 T56
Axle/Gears: 3.23 10bolt waiting to explode.
What did you use to shim the center intake bolts so they'd sit flush?

I'm currently stuck trying to find the shims, its the last part I need.
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Old Jun 8, 2005 | 12:13 PM
  #6  
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From: NJ/PA
Car: Yes
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look at www.mcmaster.com for tapered shims. they should have what your looking for.
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Old Jun 8, 2005 | 01:42 PM
  #7  
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From: clarksville, tn
Car: 1991 Formula
Engine: 350 HSR
Transmission: TH-700R4
Axle/Gears: 10 bolt 3.73
In the GMHTP article regarding the HSR, the car had a cam and aftermarket heads and were also running 45 psi, but when they dynoed it, it was found to be running way too rich and so the pressure was changed to 38 psi and gained a substantial amount of hp to the wheels. Maybe that will help.
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Old Jun 9, 2005 | 09:07 PM
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Car: 1987 Pontiac Trans Am GTA
Engine: 355 Stealth Ram
Transmission: 700R4 w/ 2600 stall
Axle/Gears: 9-bolt 3.27
well i guess that ill bump the fuel pressure down to 38 psi and see what happens i dont remember reading that but ill double check dont get me wrong im not calling you a lier. i didnt use anything to shim the 4 middle bolts but it didnt have a problem sealing a buddy of mine helped me out and im pretty sure he would have noticed it his pretty good with little stuff like thatbut thanks again with all your help
Daniel
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Old Jun 9, 2005 | 09:47 PM
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38# will be too low for the stock injectors with a stock 350 chip. Put in the Accel injectors and start out at 44 pounds. The HSR starts running dangerously lean on the stock 350 chip around 5400 rpm!!!! You really need to get a chip burned,, not so much for ET as for engine longevity.
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Old Jun 10, 2005 | 09:46 AM
  #10  
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From: MA, USA
Car: 83 bird
Engine: 305/383
Transmission: WC T5
Axle/Gears: 3:42
You have a stealth ram installed... and you aren't posting pics?
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Old Jun 11, 2005 | 03:08 PM
  #11  
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Car: 1987 Pontiac Trans Am GTA
Engine: 355 Stealth Ram
Transmission: 700R4 w/ 2600 stall
Axle/Gears: 9-bolt 3.27
well i guess ill put those in then whatever makes the car run better is what i care about and i dont want it lean much rather have it fat. as far as pics i have tp get them developed then find someone i know with a scanner so i can scan them and post them. hopefully in do time! thats the next thing on my list to do is getting a chip burned well thanks for the advice as always Daniel
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Old Jun 21, 2005 | 10:17 PM
  #12  
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From: Granada hills,ca
Car: 88 Iroc vert
Engine: 305 tpi. cts-v brakes
Transmission: Tremec T-56
Axle/Gears: 3.23
pics?
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Old Jun 21, 2005 | 10:52 PM
  #13  
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From: Tucson - MdFormula350 = Post uberWhore
Car: Sexy
Engine: Stock
Transmission: Slipping
When I first put my HSR in I couldn't post enough pics for people.

You're going to have to tune your chip, there's no way around it now. The stock chip is set up (timing and fuel wise) for an intake that doesn't pull much past 4500 RPM.
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Old Jun 24, 2005 | 08:25 PM
  #14  
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From: White Lake, MI
Car: 89' IROCZ
Engine: 5.7 L98
Transmission: 700r4
Check your O2 sensor. I could be the cause of running rich. It should crosscount it least once per second.
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