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tpi runners.

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Old 09-21-2010, 12:14 PM
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Car: 1990 FORMULA WS6 T-TOPS
Engine: 305 TPI
Transmission: BORG-WARNER T5
Axle/Gears: BORG-WARNER 3.42
tpi runners.

I have a 305 tpi and i want to get new runners. Which ones are the best . The SLP or Edelbrock. And if i get 22lbs fuel injectors would it make a difference?
Old 09-21-2010, 01:35 PM
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Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
Re: tpi runners.

Depends. Out of the box Edelbrocks as long as they are machined correctly. For serious modification SLP.
Old 09-21-2010, 02:13 PM
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Car: Corvette
Engine: 383
Transmission: 700r4
Axle/Gears: D36 w/ 3.08
Re: tpi runners.

What are the stock injectors?

Injectors can help if yours are worn and the newer bosch III have better spray pattern atomization than stock.

going to a bigger size needs a tune.
Old 09-21-2010, 04:37 PM
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Car: 1990 FORMULA WS6 T-TOPS
Engine: 305 TPI
Transmission: BORG-WARNER T5
Axle/Gears: BORG-WARNER 3.42
Re: tpi runners.

19lbs
Old 09-21-2010, 05:07 PM
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Car: 87 GTA
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Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: tpi runners.

MAF will allow a little more leeway for mods than MAP will, before PROM tuning is needed.
Old 09-21-2010, 06:07 PM
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Car: Corvette
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Re: tpi runners.

Maf will think its feeding with 19lbers when its really dumping more in with 22s

I ran PIG RICH when I didnt get a tune for bigger injectors. I balanced it out for a while with an AFR but still ran rich.
Got a tune and been happy since
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