What gears to go with on D-1 408?
02-06-2006, 03:06 AM
#1
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What gears to go with on D-1 408?
The motor is being built and I decided since its going to be in the shop to let them put in a DTE unit but what gears should i go with? The car sees alot more highway miles then quaters. ITs going on m6 and the expected rwhp is around 800-900. 
02-06-2006, 12:52 PM
#3
Race Director
just pulled the 3.90 out of mine and had a 3.42 put in.
if this piece of crap would stop shredding belts, i would tell you how it feels
the guy that's working on it now said that only 1,2,and 3 gears are useless with the 3.42s!
3.72 and 3.90 would be stupid with that much horsepower.
if this piece of crap would stop shredding belts, i would tell you how it feels
the guy that's working on it now said that only 1,2,and 3 gears are useless with the 3.42s!
3.72 and 3.90 would be stupid with that much horsepower.
02-06-2006, 01:36 PM
#5
Melting Slicks
leave them at 3.42's.....
02-06-2006, 01:55 PM
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St. Jude Donor '06
Originally Posted by nextphasemarko
leave them at 3.42's.....
As traction is going to be a joke in the first 3 gears even with the 3.42s!!!!!!! 
02-06-2006, 02:03 PM
#8
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Originally Posted by mdhmi
First off you're not going to be anywhere near 900 rwhp unless you spray it. As for gear, a 3:15 or 3:42 should work well.
Mark
Mark
I have over 800 to the wheels with 3.73 and wish I had left it with 3.42's, I have even thought of going to 3.15's
02-06-2006, 04:59 PM
#9
Team Owner
You're making 800 rwhp with an F1-R which can flow 2,000 CFM versus 1,400 CFM with the D-1SC. That's a much different ball game.
I totally agree about gears. Most of the guys who have gone with a big gear have replaced them with stock 3:15's or 3:42's. Traction is plenty difficult with 3:42's once you get into the 600+ rwhp area.
Cheers,
Mark
I totally agree about gears. Most of the guys who have gone with a big gear have replaced them with stock 3:15's or 3:42's. Traction is plenty difficult with 3:42's once you get into the 600+ rwhp area.
Cheers,
Mark
02-06-2006, 05:03 PM
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St. Jude Donor '06
Originally Posted by BLOWN ECS Z06
As traction is going to be a joke in the first 3 gears even with the 3.42s!!!!!!! 
3.42's suck with High HP 
02-06-2006, 05:29 PM
#12
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Originally Posted by mdhmi
First off you're not going to be anywhere near 900 rwhp unless you spray it. As for gear, a 3:15 or 3:42 should work well.
Mark
Mark
Less gear with more power.
Shahram
02-06-2006, 07:12 PM
#13
Safety Car
Originally Posted by Togo
yeah, but 3.90's suck EVEN WORSE with High HP 
Torque is responsible for lack of traction.
But I agree with most of you. Last thing you need with well over 500rwtq is more gear to bring it up even higher.
Last edited by tlaselva; 02-06-2006 at 07:22 PM.
02-06-2006, 10:46 PM
#15
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Originally Posted by mdhmi
You're making 800 rwhp with an F1-R which can flow 2,000 CFM versus 1,400 CFM with the D-1SC. That's a much different ball game.
I totally agree about gears. Most of the guys who have gone with a big gear have replaced them with stock 3:15's or 3:42's. Traction is plenty difficult with 3:42's once you get into the 600+ rwhp area.
Cheers,
Mark
I totally agree about gears. Most of the guys who have gone with a big gear have replaced them with stock 3:15's or 3:42's. Traction is plenty difficult with 3:42's once you get into the 600+ rwhp area.
Cheers,
Mark
Yeah I know thats why I was agreeing with you, 900 with a d1sc is highly unlikely
02-06-2006, 11:15 PM
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St. Jude Donor '06
Originally Posted by FRC Tom
750 rwhp with a M12
I run 273s and still slide all over in 1st and 2nd.
I do love 135 mph out of 3rd.
I run 273s and still slide all over in 1st and 2nd.
I do love 135 mph out of 3rd.
damn I am going to have to think hard on what I get......thanks
02-06-2006, 11:46 PM
#19
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St. Jude Donor '06
Yep............the whole drive line is stock..............well not the clutch. I know..........the first time it hooks up it will break into many parts
02-07-2006, 12:14 AM
#20
Tires tires tires.
You have to have the proper rubber.
Eg: I skate all over the road just rolling into it in the first three gears on michellin pilot sports.
JBsBlownC5, making more power than me, can hammer the throttle anywhere from second gear and up, and hook, on Nitto NT01s.
Im switching to these tires when my Pilot Sports are done, and in the meantime picked up a set of BFG DRs to play with.
I would imagine even a 408 with a D1 making 700rwhp would be viable with the stock gears if you ran sticky rubber (BFG DRs, Nitto NT01s, Nitto 555Rs, RIIs, and so on).
You have to have the proper rubber.
Eg: I skate all over the road just rolling into it in the first three gears on michellin pilot sports.
JBsBlownC5, making more power than me, can hammer the throttle anywhere from second gear and up, and hook, on Nitto NT01s.
Im switching to these tires when my Pilot Sports are done, and in the meantime picked up a set of BFG DRs to play with.
I would imagine even a 408 with a D1 making 700rwhp would be viable with the stock gears if you ran sticky rubber (BFG DRs, Nitto NT01s, Nitto 555Rs, RIIs, and so on).