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258 cam specs??

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FSJunkie View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote FSJunkie Quote  Post ReplyReply Direct Link To This Post Posted: Oct/19/2018 at 4:38am
Here's a drivetrain for you.

  • 258 I6, two barrel carburetor, 9.2:1 compression, I run it on plus most of the time.
  • 2000 RPM stall torque converter. 
  • 3-speed A998 automatic with wide ratio gearset (2.74, 1.55, 1.00).
  • Lockup torque converter. 
  • 2.35 axle ratio. 
  • 26' tires.
It works extremely well. It'll go 95 MPH in 2nd gear just like a Duesenberg model J. LOL In fact, 2nd gear is the hill climbing gear on the interstate. Cruising 75 MPH and see a hill up ahead that you can't hold in 3rd? Cram it down into 2nd without slowing down and it'll pull the hill with ease. I've never had a car that I could cram into 2nd at those speeds, let alone have it be effective. It's a different way of driving. The higher stall converter and high 1st gear ratio get it off the line pretty well despite the axle ratio. 

Stock 1984 Eagle Limited. 

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DocCreer View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DocCreer Quote  Post ReplyReply Direct Link To This Post Posted: Feb/08/2019 at 9:15pm
i can attest to this
61 American
82 eagle limited
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purple72Gremlin View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote purple72Gremlin Quote  Post ReplyReply Direct Link To This Post Posted: Feb/08/2019 at 9:32pm
Originally posted by FSJunkie FSJunkie wrote:

Here's a drivetrain for you.

  • 258 I6, two barrel carburetor, 9.2:1 compression, I run it on plus most of the time.
  • 2000 RPM stall torque converter. 
  • 3-speed A998 automatic with wide ratio gearset (2.74, 1.55, 1.00).
  • Lockup torque converter. 
  • 2.35 axle ratio. 
  • 26' tires.
It works extremely well. It'll go 95 MPH in 2nd gear just like a Duesenberg model J. LOL In fact, 2nd gear is the hill climbing gear on the interstate. Cruising 75 MPH and see a hill up ahead that you can't hold in 3rd? Cram it down into 2nd without slowing down and it'll pull the hill with ease. I've never had a car that I could cram into 2nd at those speeds, let alone have it be effective. It's a different way of driving. The higher stall converter and high 1st gear ratio get it off the line pretty well despite the axle ratio. 

Stock 1984 Eagle Limited. 

Because of the 2.35 gears is why.
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farna View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote farna Quote  Post ReplyReply Direct Link To This Post Posted: Feb/10/2019 at 10:29am
And the higher stall converter to multiply torque enough to get the car moving well in first despite the high rear axle ratio. A stock six cylinder converter stalls at something like 1600 rpm. 400 rpm makes a difference! The lock-up converter makes it nice for cruising too. There is usually about a 200 rpm difference between locked and unlocked. A modern electronically controlled trans will unlock the converter for an uphill pull for a bit before kicking down a gear (all are four speed OD autos that I know of that do this). The extra torque multiplication and 200 rpm is sometimes all that is needed. I don't think the old hydraulic only lock-up trannys do that, or don't do it for long.
Frank Swygert
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73amchornet View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 73amchornet Quote  Post ReplyReply Direct Link To This Post Posted: Apr/29/2019 at 2:34pm
Hi,
 
I have the isky cam in my 258, I am going to put the Edelbrock 500 on it.   I have Lokar shiftdown to the 904 and Lokar throttle cable.  Do I need the Throttle Lever Kit #1481 for this install? 
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Ollie View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ollie Quote  Post ReplyReply Direct Link To This Post Posted: Apr/29/2019 at 3:34pm
No you don't need that bracket

You need this bracket to bolt to the carb, it holds the throttle cable and the kickdown cable. 

1966 American Convertible -- "The Rambler"..SOLD
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1969 Rambler 220 post car--"Road Warrior"
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