4 speed conversion
#1
4 speed conversion
What are you guys thoughts on converting a 71 442 conv. (all original drivetrain with one repaint. Green with green interior. Probably gonna paint different color and change interior and add some options) to a 4- speed? Do you think it will hurt the value of the car since I am going to paint it a different color and change the interior anyway. It is a real 442 conv. I just think a 4-spd would be a lot of fun?
#2
My opinion is to do what you like...in 71 4spds were getting rarer as an option choice. The only time value will be an issue is when you sell the car. Sounds like you will keep it a while so not to worry. Save the original parts should the next owner want to put it back the way it came. Its hard to predict if the 4spd conversion will hurt or enhance value when it is time to sell.
#5
other questions
Hi Joe,
Yes I am aware of the issue with the crank. I have some other questions now that you bring it up:
Were power disc brakes an option with a 4-spd?
I am aware the W-30 4-spd. did not have power brakes due to vacuum or lack of.
Was that because of the w-30 cam or was that true for 4-spds in general?
If I do this conversion should I change the cam?
Would I still have power brakes?
What about the carb, isn't there 4-spd carbs that were unique too?
How will this car run if I just change the trans to 4 spd. and not do anything with brake booster, camshaft or carb.
If I put a new w- 30 cam in I assume that it would not make enough vac?
Would there be a big difference in an auto carb compared to a 4-sp carb?
Yes I am aware of the issue with the crank. I have some other questions now that you bring it up:
Were power disc brakes an option with a 4-spd?
I am aware the W-30 4-spd. did not have power brakes due to vacuum or lack of.
Was that because of the w-30 cam or was that true for 4-spds in general?
If I do this conversion should I change the cam?
Would I still have power brakes?
What about the carb, isn't there 4-spd carbs that were unique too?
How will this car run if I just change the trans to 4 spd. and not do anything with brake booster, camshaft or carb.
If I put a new w- 30 cam in I assume that it would not make enough vac?
Would there be a big difference in an auto carb compared to a 4-sp carb?
#6
Year One sells an adapter that will allow you to stick a throughout bearing on the back of your crank. its a lot of work, but its do able. Swapping the transmission shouldnt do much to your setup. even if you do have power brakes, power brakes dont require much vaccum to operate. hence why they work at idle. You shouldnt need to swap the cam at all.
#7
Hi Joe,
Yes I am aware of the issue with the crank. I have some other questions now that you bring it up:
Were power disc brakes an option with a 4-spd?
I am aware the W-30 4-spd. did not have power brakes due to vacuum or lack of.
Was that because of the w-30 cam or was that true for 4-spds in general?
Yes I am aware of the issue with the crank. I have some other questions now that you bring it up:
Were power disc brakes an option with a 4-spd?
I am aware the W-30 4-spd. did not have power brakes due to vacuum or lack of.
Was that because of the w-30 cam or was that true for 4-spds in general?
If I do this conversion should I change the cam?
Would I still have power brakes?
What about the carb, isn't there 4-spd carbs that were unique too?
How will this car run if I just change the trans to 4 spd. and not do anything with brake booster, camshaft or carb.
How will this car run if I just change the trans to 4 spd. and not do anything with brake booster, camshaft or carb.
If I put a new w- 30 cam in I assume that it would not make enough vac?
Would there be a big difference in an auto carb compared to a 4-sp carb?
#10
I guesw what I am trying to say is: If I were to do this conversion I would like my A/c to work, power brakes to work, I would like the car to be able to get off the line nicely and chirp between gears, I would still like to be able to cruise down the highway without winding the engine. Just would like a strong running and good performing auto with a lot of options.
#11
Original GM 4 speed (2.20 first gear) ratios were application specific to the 283 inch '57 Corvette, for use in road racing.
Not an ideal combination for the street, or a for 455 Olds.
Are you in it for the money? Exxon stock (I'm getting richer by the minute) is a far better investment.
Norm
Not an ideal combination for the street, or a for 455 Olds.
........ Do you think it will hurt the value ........
Norm
#12
...I would like the car to be able to get off the line nicely and chirp between gears, I would still like to be able to cruise down the highway without winding the engine. Just would like a strong running and good performing auto with a lot of options.
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