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Re: any gains going from 4.10 to a 4.30 gear [Re: Cab_Burge] #1188948 03/03/12 09:06 PM 03/03/12 09:06 PM
Joined: Dec 2007 Posts: 830 east coast Otherlane super stock
Otherlane super stock Joined: Dec 2007 Posts: 830 east coast	This is good info.im going to change my 4.56 for either 4.30 or 4.10s.the car was going though at 8000 rpm and need to get it down to around 7400.if i use the chart as posted it said 4.10s This is a small block car

Re: any gains going from 4.10 to a 4.30 gear [Re: Otherlane] #1188949 03/04/12 10:01 AM 03/04/12 10:01 AM
Joined: Jan 2003 Posts: 26,623 United Socialist States of Ame... T tboomer Too Many Posts
tboomer Too Many Posts T Joined: Jan 2003 Posts: 26,623 United Socialist States of Ame...	That calculator was pretty cool..My modor is out of steam at 6400...So I put in my 31" tires,130 mph ..It came out to 4.54-1 gears.. Need your rear end checked out? Contact Grizzly!!

Re: any gains going from 4.10 to a 4.30 gear [Re: tboomer] #1188950 03/04/12 01:26 PM 03/04/12 01:26 PM
Joined: Apr 2004 Posts: 12,339 somwhere S smokinwoody I Live Here
smokinwoody I Live Here S Joined: Apr 2004 Posts: 12,339 somwhere	more calculators... http://www.ringpinion.com/Calculators/

Re: any gains going from 4.10 to a 4.30 gear [Re: mopar dave] #1188951 03/04/12 04:33 PM 03/04/12 04:33 PM
Joined: Jan 2003 Posts: 17,930 Akron, Ohio ProSport I Live Here
ProSport I Live Here Joined: Jan 2003 Posts: 17,930 Akron, Ohio	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. 7103365-100_1934.jpg (165 downloads) 1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual

Re: any gains going from 4.10 to a 4.30 gear [Re: mopar dave] #1188952 03/07/12 10:07 PM 03/07/12 10:07 PM
Joined: Jan 2003 Posts: 2,276 Kissimmee, Florida aarlucas top fuel
aarlucas top fuel Joined: Jan 2003 Posts: 2,276 Kissimmee, Florida	I went from 3.91 to 4.30 after I broke my pinion gear and saw no change at all. It is going to depend on your combo and torque more than anything.

Re: any gains going from 4.10 to a 4.30 gear [Re: aarlucas] #1188953 03/08/12 11:19 PM 03/08/12 11:19 PM
Joined: Dec 2007 Posts: 830 east coast Otherlane super stock
Otherlane super stock Joined: Dec 2007 Posts: 830 east coast	Do you guys think going to 4.10 gear from 4.56 gear would hurt my car? my car was going though at 8000 if i get it to go though at 7400 do you think the car would go faster? It made peak power at 7400 rpms

Re: any gains going from 4.10 to a 4.30 gear [Re: Otherlane] #1188954 03/09/12 12:24 AM 03/09/12 12:24 AM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: Do you guys think going to 4.10 gear from 4.56 gear would hurt my car? my car was going though at 8000 if i get it to go though at 7400 do you think the car would go faster? It made peak power at 7400 rpms Whats your set up... small blocks like RPM because they dont make the torque... but you need the heads and induction to spin it EDIT if you make peak HP at 7400 you would like to cross the line at 10% higher than that Last edited by MR_P_BODY; 03/09/12 12:56 AM.

Re: any gains going from 4.10 to a 4.30 gear [Re: MR_P_BODY] #1188955 03/09/12 07:29 AM 03/09/12 07:29 AM
Joined: Dec 2007 Posts: 830 east coast Otherlane super stock
Otherlane super stock Joined: Dec 2007 Posts: 830 east coast	I running a w8 motor.At 8000 rpms it seem like it was out of steam

Re: any gains going from 4.10 to a 4.30 gear [Re: Otherlane] #1188956 03/09/12 09:50 AM 03/09/12 09:50 AM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	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

Re: any gains going from 4.10 to a 4.30 gear [Re: MR_P_BODY] #1188957 03/11/12 08:14 AM 03/11/12 08:14 AM
Joined: Dec 2007 Posts: 830 east coast Otherlane super stock
Otherlane super stock Joined: Dec 2007 Posts: 830 east coast	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

Re: any gains going from 4.10 to a 4.30 gear [Re: Otherlane] #1188958 03/11/12 09:41 AM 03/11/12 09:41 AM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	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

Re: any gains going from 4.10 to a 4.30 gear [Re: MR_P_BODY] #1188959 03/11/12 01:13 PM 03/11/12 01:13 PM
Joined: Jan 2007 Posts: 8,182 Mt Morris Michigan mopar dave OP master
mopar dave OP master Joined: Jan 2007 Posts: 8,182 Mt Morris Michigan	boy not sure i want to roll the dice on a gear change. $500 expence and may very well not see any gain. i now cross the strip right at peak power(6800) so the 4.30 gear should push the r's above 7000. i'll have to think about this awhile. http://www.youtube.com/watch?v=aIxaesJ190U http://youtu.be/lCZAaN7fFLg

Re: any gains going from 4.10 to a 4.30 gear [Re: mopar dave] #1188960 03/11/12 04:01 PM 03/11/12 04:01 PM
Joined: May 2004 Posts: 3,210 robin hood country deaks master
deaks master Joined: May 2004 Posts: 3,210 robin hood country	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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