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cam choice on a 305 TPI

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Old Sep 6, 2006 | 08:32 AM
  #1  
AT9305RS's Avatar
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Joined: Apr 2005
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From: Oak Brook, Il
Car: 91 Bird
Engine: 3.1 w00t
Transmission: 7hundo
Axle/Gears: bent
cam choice on a 305 TPI

looking for a quick opinion or two on the two cams i'm deciding between, i've got an 86 Z28 with a 305 TPI

its got a ported plenum and a full exhaust

the two cams i'm looking at are

1. dur at 050 inch lift intake: 204 exhaust: 214
lift. intake: 420 Exhaust: 442

the other 2. dur at 050 in lift, intake: 214 exhaust: 224
lift. intake: 442 exhaust: 465

i'd like to do little to no tuning so which would you guys recommend for the most bang for the buck?

i'm leaning more towards the first one
thanks for any help

car is also a 700R4 car that will evenually have a small-medium stall
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Old Sep 6, 2006 | 10:27 AM
  #2  
roachjuice's Avatar
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Joined: Nov 2005
Posts: 380
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From: Tulsa
Car: 86 Omni GLHT
Engine: 2.2 Turbo/Intercooled
Transmission: 5 speed
Axle/Gears: 3:85
Originally Posted by AT9305RS
looking for a quick opinion or two on the two cams i'm deciding between, i've got an 86 Z28 with a 305 TPI

its got a ported plenum and a full exhaust

the two cams i'm looking at are

1. dur at 050 inch lift intake: 204 exhaust: 214
lift. intake: 420 Exhaust: 442

the other 2. dur at 050 in lift, intake: 214 exhaust: 224
lift. intake: 442 exhaust: 465

i'd like to do little to no tuning so which would you guys recommend for the most bang for the buck?

i'm leaning more towards the first one
thanks for any help

car is also a 700R4 car that will evenually have a small-medium stall
i like the second choice...
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Old Sep 6, 2006 | 10:57 AM
  #3  
1MeanZ's Avatar
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From: North Central Indiana
Car: 86 IROC
Engine: 383
Transmission: TKO 600
Axle/Gears: 3.54 Dana 44 IRS
what a coincidence, I have the 2nd cam you listed as well. I will say it is borderline too much cam for a mild 305. Like Roachjuice's car mine went 14.80s with that cam, headers, and the stock torque converter. I then swapped converters and put on the aluminum heads and went 13.90s. Then I ditched the automatic and am now going 13.70s with 13.50s possible. That is an OK cam for a 305 especially if you are going to port the heads or install better heads. With the stock torque converter and stock heads it will run strong but will be a tad soggy off the line.
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Old Sep 6, 2006 | 11:02 AM
  #4  
AT9305RS's Avatar
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Joined: Apr 2005
Posts: 441
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From: Oak Brook, Il
Car: 91 Bird
Engine: 3.1 w00t
Transmission: 7hundo
Axle/Gears: bent
thanks for the reply's guys, after researching a little more i went ahead and bought the second of the two

i have an extra set of TPI heads that will be getting ported and thrown on there this winter along with a stall probably

thanks again
-Andrew
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