Drag Racing Discussions > Front Engine Dragsters
What is everyone using for as a gear ratio
wideopen231:
--- Quote from: masracingtd1167 on April 23, 2014, 11:15:48 AM ---Why are everybody afraid of rpm ? A smallblock dose not really make any power till it's over 6000rpm ! My son's 565 big block crosses at about 8500 Just sayin .
--- End quote ---
They have never ran alky dragster. 6500 to 7500 off line change at 10,000. Now sbc love to be spun unless it all crank motor. My problem has always been I love to spin a motor upwards of high as heck(see Glen caught myself).
I agree no need to spin 10k on most stuff.I have never understood why folks get excited about 8500 or so on a motor thats built for racing.Heck I spin my Harley to 7000 and most street engine I have ran I would hit 8000 and never blink.
wideopen231:
Im running 4.11 as a happy medium. Need to be consistent with my deal mostly brackets. I figure 3.90 would work but would rather have more bottomend.The 4.30 would probably be better for et except on some of the crappy tracks around. So 4.11 happy medium. IMO gear change is fairly cheap tuning tool.Pro gear about 350 after lightened and on grand scale of what you spend thats pretty minor.
Will be running 1.69 low PG also.
GlennLever:
--- Quote from: wideopen231 on April 24, 2014, 05:13:19 AM ---
--- Quote from: masracingtd1167 on April 23, 2014, 11:15:48 AM ---Why are everybody afraid of rpm ? A smallblock dose not really make any power till it's over 6000rpm ! My son's 565 big block crosses at about 8500 Just sayin .
--- End quote ---
They have never ran alky dragster. 6500 to 7500 off line change at 10,000. Now sbc love to be spun unless it all crank motor. My problem has always been I love to spin a motor upwards of high as heck(see Glen caught myself).
I agree no need to spin 10k on most stuff.I have never understood why folks get excited about 8500 or so on a motor thats built for racing.Heck I spin my Harley to 7000 and most street engine I have ran I would hit 8000 and never blink.
--- End quote ---
Very nice, I run 3:70, running a stock block Pontiac 462 does no like high RPMs, run through the traps at 6500 at 162
Van:
We are running 3.54 behind the big Ford & Turbo 400 & 33 " tire . I have a lower launch ratio than Glides & low ratio rear gears. I get a good 60ft. without having to buzz the motor in the lights.
Pipe Dreams:
Running a 4.30 in mine on a 33 M&H. Launch @ 3800, shift @ 6500, cross the stripe@ 7100. I run a stroker smallblock mopar, so I don' t care to twist it as hard as if it were a 340. I have thought about going to a shorter time though, just because it seems like all of the tracks are running super- pro on the. 1/8 mile now.
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