Powerglide or C4 - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 11 Old 12-03-2017, 12:07 PM Thread Starter
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Powerglide or C4

We have a 89 notch big tire care 4:56 9" 347 stroker drag only with a glide it runs 10.90's. Been thinking about going to a C4 and a racer friend has one for sale. What do you think?

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post #2 of 11 Old 12-03-2017, 12:13 PM
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A proper C-4 can certainly work well in that application. Question is, why switch? In the grand scheme of things, a C-4 will never take the HP that a glide can. But at your level it should not be a problem.


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post #3 of 11 Old 12-03-2017, 12:21 PM Thread Starter
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A proper C-4 can certainly work well in that application. Question is, why switch? In the grand scheme of things, a C-4 will never take the HP that a glide can. But at your level it should not be a problem.
That is the question is it worth switching? Will I gain anything or lose anything? Will 60' pick up? Will et pick up or slow? The key for us is consistency.
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post #4 of 11 Old 12-03-2017, 09:13 PM
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ET will probably slow a little, based on my experience with similar combinations with similar power. How much? Maybe up to .1. Most people including myself who switched from a C4 to a PG picked up about a tenth in the 1/8, so a tenth and a half or so in the 1/4. If you already have a good PG, keep it. Most folks go from C4 to PG and never look back.

If the key is consistency, I assume bracket racing or .90 racing, then it's certainly a no brainer to keep the PG. That is my own experience. 'Course get ready because guys are fixing to come out of the shadows and suggest a rossler TH400, or a TH350, or C6 or TF727....but honestly for consistency and parts availability, it's hard to beat a PG. It's popular for a reason!
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post #5 of 11 Old 12-03-2017, 10:10 PM
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We have a 89 notch big tire care 4:56 9" 347 stroker drag only with a glide it runs 10.90's. Been thinking about going to a C4 and a racer friend has one for sale. What do you think?

Since your car is a race only I would stay with the powerglide if consistency is a key factor. The C4 would be much better for a street car since the extra gear in the transmission would keep you from having to run such a low rear gear on the street.

If your wanting to go faster using the powerglide you might look into fine tuning the converter for a better 60' plus better efficiency on the top end. Assuming you haven't done that already.
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post #6 of 11 Old 12-04-2017, 01:51 PM Thread Starter
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ET will probably slow a little, based on my experience with similar combinations with similar power. How much? Maybe up to .1. Most people including myself who switched from a C4 to a PG picked up about a tenth in the 1/8, so a tenth and a half or so in the 1/4. If you already have a good PG, keep it. Most folks go from C4 to PG and never look back.

If the key is consistency, I assume bracket racing or .90 racing, then it's certainly a no brainer to keep the PG. That is my own experience. 'Course get ready because guys are fixing to come out of the shadows and suggest a rossler TH400, or a TH350, or C6 or TF727....but honestly for consistency and parts availability, it's hard to beat a PG. It's popular for a reason!
We bracket race 1/4 mile. My son also want to run super stock 10.90 index. The glides fresh with a A! torque converter. Thanks for being the voice of reason.
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post #7 of 11 Old 12-04-2017, 01:53 PM Thread Starter
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Since your car is a race only I would stay with the powerglide if consistency is a key factor. The C4 would be much better for a street car since the extra gear in the transmission would keep you from having to run such a low rear gear on the street.

If your wanting to go faster using the powerglide you might look into fine tuning the converter for a better 60' plus better efficiency on the top end. Assuming you haven't done that already.
Just had the converter done by A1. Thanks for your insite
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post #8 of 11 Old 12-04-2017, 02:21 PM
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Are you looking to run quicker? Id think it would be quicker with the c4. Im sure you would gain by running a small tire vs those super swampers. But then again you bracket, and thats not my thing.

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post #9 of 11 Old 12-04-2017, 03:02 PM
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For a bracket car, there is no way I would get rid of the PG. They are hard to beat for durability, consistency (one less gear change), and much simpler to rebuild. You would also have to change (or modify) your shifter, brackets, etc.
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post #10 of 11 Old 12-14-2017, 09:15 AM
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For the money that you'd spend on the trans, why not put a racepak in the car? Assuming you don't already have some manner of data acquisition.

You'll learn FAR more about the car is a very short period of time.


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post #11 of 11 Old 12-17-2017, 07:30 PM
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If running a footbrake only class (no electronics), a race pack may not be allowed. Isn't in our neck of the woods. I had an LM-1 in mine to watch WBO2, RPM, and fuel pressure but it didn't fly-even though it has zero bearing on anything but me being able to watch what happens AFTER a run. In a class like this, simple is good. And a Powerglide simplifies things a little.
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