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Re: any gains going from 4.10 to a 4.30 gear
[Re: mopar dave]
#1188951
03/04/12 05:33 PM
03/04/12 05:33 PM
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Joined: Jan 2003
Posts: 17,928 Akron, Ohio
ProSport
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 17,928
Akron, Ohio
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I went from 4.30's to 4.56's in my old 9 second DartSport(at the time of the gear change it was in the 10.20's), the trap RPM went up a couple hundred RPM's but the ET didn't change at all, should have stayed with the 4.30's. This was a 451 low deck, Eddy heads, and 590 purpleshaft cam.
1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
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Re: any gains going from 4.10 to a 4.30 gear
[Re: Otherlane]
#1188956
03/09/12 10:50 AM
03/09/12 10:50 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
I running a w8 motor.At 8000 rpms it seem like it was out of steam
What CI is it and how big is the carb... 7400 for a W-8 seems on the low side for a W-8 head unless its big CI ![](/ubbthreads/images/graemlins/wave.gif)
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Re: any gains going from 4.10 to a 4.30 gear
[Re: MR_P_BODY]
#1188957
03/11/12 09:14 AM
03/11/12 09:14 AM
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Joined: Dec 2007
Posts: 830 east coast
Otherlane
super stock
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super stock
Joined: Dec 2007
Posts: 830
east coast
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Quote:
Quote:
I running a w8 motor.At 8000 rpms it seem like it was out of steam
What CI is it and how big is the carb... 7400 for a W-8 seems on the low side for a W-8 head unless its big CI
428 in with a 1100 carb
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Re: any gains going from 4.10 to a 4.30 gear
[Re: Otherlane]
#1188958
03/11/12 10:41 AM
03/11/12 10:41 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Quote:
Quote:
I running a w8 motor.At 8000 rpms it seem like it was out of steam
What CI is it and how big is the carb... 7400 for a W-8 seems on the low side for a W-8 head unless its big CI
428 in with a 1100 carb
7400 isnt that bad with 428ci... you could use less gear and might see a improvement ![](/ubbthreads/images/graemlins/wave.gif)
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Re: any gains going from 4.10 to a 4.30 gear
[Re: mopar dave]
#1188960
03/11/12 05:01 PM
03/11/12 05:01 PM
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Joined: May 2004
Posts: 3,210 robin hood country
deaks
master
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master
Joined: May 2004
Posts: 3,210
robin hood country
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I run 4.56 gears in my 440 and i thought about going to 4.30's to keep the rpm down. I've decided to throw my $500 at a set of Afcos instead. Point being, you might be better to think where the money could be better spent. Mick
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200# best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft best 60ft 1.36
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