Another 302 Head Question
ow and ow!
30s will make 4000 to be 41 mph in first and 70 in second.
You would be way more excited with a 2800TC and more rear gear;
than with any home -porting.
Those 3.73s would get you 65=2723 zero slip.
Typically you will want to blast off at a tic under 30 mph. With your current combo, this will be;1250 in drive,1820 in second and 3070 in low.
Here is a Magnum 5.2 curve, just an example..............
Check out the torque at 1600,maybe 264ftlbs
Check it out at 2800; maybe 292ftlbs.
Now multiply those numbers by your rear gear and low gear and then by 24/30=.8 to get the ftlbs the tires are gonna see.
>>First the current combo
264(at 1600)x2.45x3.54x.8= 1832ftlbs at the road . not too bad. But look at the horsepower; about 80hp.
Ok now imagine what the homeporting will do for you.From peak torque(3200) to shift-rpm(say 5700), the homeport might help with power. So the port work if works at all, will work from about 31mph to 55 mph. Now, ask yourself how often are you gonna go thru that zone, in first gear, at WOT. Then decide if it's worth your time to wear your fingers out on something that may or may not have good results, and you can't prove it with out before and after flow-tests, And in any case the gears and TC (see below) will eclipse any improvement.
>>Next AJ's pick; the 2800 and 3.73s;
292(at 2800)x2.45x3.73x.8= 2135ftlbs, Whoa! That is plus 16.5% more torque, and enough to fry both rear tires so make sure the SureGrip is working. Now look at the horsepower, about 183hp.
With the 3.73s now your rpm at 30mph will be 3230. Go look on the graph; what are the ftlbs there? I'll go with 298. Ok so 298x2.45x3.73x.8=2179ftlbs at the road, at 30 mph.
>The Magnum numbers were likely made with the stock engine, so your numbers may be slightly different, no worries.
>The first point is that the 2800TC will more than double your horsepower to the rear wheels, over the 1600 on the start-line. And the 3.73 gears will let the engine spool up quicker, allowing you to get into second sooner. and put down more average power during the 30 to 65 mph run. And the combination of the two will incinerate the tires,off the line.
> The second point is that IMO, the home port with the 1600TC is a total bust, compared to even just the 2800TC.:)
So my advice for the biggest bang for your dollar, get a higher-stall TC and I have had great results with the 2800.
For a little more improvement the 3.73s offer plus 5.36% TM on the start-line, and throughout the working rpm, with a quicker spool up. I would save this for after you have driven the 2800; you may find the 3.54s satisfactory with the new TC. If you need new tires, 28s will offer a cheaper alternative to the 3.73s. Tires offer a 30/28=7.1%TM improvement.
ow and ow!
30s will make 4000 to be 41 mph in first and 70 in second.
You would be way more excited with a 2800TC and more rear gear;
than with any home -porting.
Those 3.73s would get you 65=2723 zero slip.
Typically you will want to blast off at a tic under 30 mph. With your current combo, this will be;1250 in drive,1820 in second and 3070 in low.
Here is a Magnum 5.2 curve, just an example..............
Check out the torque at 1600,maybe 264ftlbs
Check it out at 2800; maybe 292ftlbs.
Now multiply those numbers by your rear gear and low gear and then by 24/30=.8 to get the ftlbs the tires are gonna see.
>>First the current combo
264(at 1600)x2.45x3.54x.8= 1832ftlbs at the road . not too bad. But look at the horsepower; about 80hp.
Ok now imagine what the homeporting will do for you.From peak torque(3200) to shift-rpm(say 5700), the homeport might help with power. So the port work if works at all, will work from about 31mph to 55 mph. Now, ask yourself how often are you gonna go thru that zone, in first gear, at WOT. Then decide if it's worth your time to wear your fingers out on something that may or may not have good results, and you can't prove it with out before and after flow-tests, And in any case the gears and TC (see below) will eclipse any improvement.
>>Next AJ's pick; the 2800 and 3.73s;
292(at 2800)x2.45x3.73x.8= 2135ftlbs, Whoa! That is plus 16.5% more torque, and enough to fry both rear tires so make sure the SureGrip is working. Now look at the horsepower, about 183hp.
With the 3.73s now your rpm at 30mph will be 3230. Go look on the graph; what are the ftlbs there? I'll go with 298. Ok so 298x2.45x3.73x.8=2179ftlbs at the road, at 30 mph.
>The Magnum numbers were likely made with the stock engine, so your numbers may be slightly different, no worries.
>The first point is that the 2800TC will more than double your horsepower to the rear wheels, over the 1600 on the start-line. And the 3.73 gears will let the engine spool up quicker, allowing you to get into second sooner. and put down more average power during the 30 to 65 mph run. And the combination of the two will incinerate the tires,off the line.
> The second point is that IMO, the home port with the 1600TC is a total bust, compared to even just the 2800TC.:)
So my advice for the biggest bang for your dollar, get a higher-stall TC and I have had great results with the 2800.
For a little more improvement the 3.73s offer plus 5.36% TM on the start-line, and throughout the working rpm, with a quicker spool up. I would save this for after you have driven the 2800; you may find the 3.54s satisfactory with the new TC. If you need new tires, 28s will offer a cheaper alternative to the 3.73s. Tires offer a 30/28=7.1%TM improvement.
