converter and tranny change make a BIG diff - Ford Muscle Forums : Ford Muscle Cars Tech Forum
 
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post #1 of 8 (permalink) Old 03-01-2004, 01:21 PM Thread Starter
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converter and tranny change make a BIG diff

Just dropping in an update. After running last season with a stock converter/c5 over the winter I got a C4 core and rebuilt it and put in a 3000 stall converter. Just went out for the first time this weekend and with NO other changes went from a best previous time of 9.12 (1/8 mile) to 8.65. Yes a half second change with just a converter and tranny swap. Pretty amazing.

The above is with a stock rebuilt old 79 302 short block with a hydraulic flat tappet 218/224 cam and mild ported D80E heads, perf RPM manifold and 650dp carb.
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post #2 of 8 (permalink) Old 03-01-2004, 01:26 PM
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converter and tranny change make a BIG diff

Nice little jump in ET




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post #3 of 8 (permalink) Old 03-01-2004, 01:28 PM
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converter and tranny change make a BIG diff

Thats great when it somes togethere like that.
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post #4 of 8 (permalink) Old 03-01-2004, 01:37 PM
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converter and tranny change make a BIG diff

I was wondering how your 60 ft times and MPH changed with the swap.
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post #5 of 8 (permalink) Old 03-03-2004, 10:40 AM Thread Starter
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converter and tranny change make a BIG diff

60 foot times went from avg of 2.08-2.10 to 1.93-1.95. MPH stayed about the same. The car does like shifting a few hundred rpm lower now though for best ET.
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post #6 of 8 (permalink) Old 03-03-2004, 12:02 PM
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converter and tranny change make a BIG diff

Yep. A little 302 Mustang had an Art Carr "4000 stall" converter last year, was running 9.0's. Got fed up and bought a Hughes - no other changes except his wallet was $900 lighter - car ran 8.0x first pass on the new converter. Good parts = go fast. Good on ya mate!

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post #7 of 8 (permalink) Old 07-18-2019, 10:22 AM
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Re: converter and tranny change make a BIG diff

Quote:
Originally Posted by Revolutionary View Post
Just dropping in an update. After running last season with a stock converter/c5 over the winter I got a C4 core and rebuilt it and put in a 3000 stall converter. Just went out for the first time this weekend and with NO other changes went from a best previous time of 9.12 (1/8 mile) to 8.65. Yes a half second change with just a converter and tranny swap. Pretty amazing.

The above is with a stock rebuilt old 79 302 short block with a hydraulic flat tappet 218/224 cam and mild ported D80E heads, perf RPM manifold and 650dp carb.
Is this possible with them heads, carb and cam? Don’t mean to resurrect an old thread but, the compression on those heads are like around 70-1. That’s like a second and half away from pro stock (high sixes I think) times from around the same time (early 2000’s) and they’re compression ratios were like 20-1 I think and using most likely a double quad setup.

I wonder how much the car weighs and what model.

Last edited by 5R07CPoppyred; 07-18-2019 at 10:24 AM. Reason: ASU
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post #8 of 8 (permalink) Old 07-18-2019, 10:30 AM
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Re: converter and tranny change make a BIG diff

Iím sorry for my lack of comprehension in my last post. I didnít realize it was 1/8 mile times. I didnít know they were doin 1/8 miles back then. But itís still pretty good times for 1/8.
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