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Author
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Topic: Swapping my 4.10's to 4.30 worth it?
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9Roush8
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Member # 2472
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posted
 
 
I have 4.10's in my car right now, would switching to 4.30 be worth it... looking for a little more down low... putting BBK lt's on it for christmas plus mods in sig.
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2001 SVT Lightning
Belltech 3/4, 22" rims, slotted rotors, magnaflow high flow mids, bassani catback, JLT CAI
Posts: 788 | From: Manteca | Registered: Feb 2003
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hidnn.o.s.
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Member # 1219
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posted
No, not worth it
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R.I.P. Willie G. You are missed on this forum
Posts: 15950 | Registered: Apr 2002
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1FAST89GT
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Member # 5071
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posted
not for a driver maybe for just track but it would be hell on the freeway
Posts: 4915 | From: VALLEJO | Registered: May 2004
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Ryan Way
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Member # 6284
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posted
yes on a cobra absofreakiloutley DO IT they F'ing ROCK!!! Rpm son the freeway are not an isseat all with a 5 speed either, your speedo will be way off tho and i dont know if your spped is electronic. Your car will accelerate like a bat outa hell.
[ December 09, 2005, 06:50 PM: Message edited by: Ryan Way ]
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Pimpin aint easy
Posts: 17 | From: Pleasant hill | Registered: Dec 2005
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1fast281
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Member # 4670
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posted
4.30 gears are perfect for the 4V, they are not "hell" on the freeway. This isn't a pushrod motor. A 4.6 DOHC has more resemblance to a Honda engine than a 5.0. My rpm is at 3000 at 80mph with 4.30 gears with the 4r70w. Redline is set at 6600rpm right now.
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1998 Mark VIII LSC Black/Graphite
2005 Pontiac GTO Silver/Black
Posts: 578 | From: north bay | Registered: Jul 2004
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JohnB
Tech Moderator
Member # 969
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posted
Don't bother going 4.30's from 4.10's. You will not notice a difference.
And please do not EVER compare a 4.6 to a Honda engine. ![[Roll Eyes]](rolleyes.gif)
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1965 Shelby Cobra
1993 Cobra
2012 F150 Raptor
2020 GT500
Posts: 6523 | From: Orlando FL/Redding CA | Registered: Mar 2002
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1fast281
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Member # 4670
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posted
In a stock/bolt on 96-98 Cobra going from 4.10's to 4.30's is definately worth it. With 4.10's you have to shift into 4th near the end of the 1/4 mile which kills et and mph. 4.10's are good for around town, but not for the 1/4 mile because of this. A stock 96 Cobra with 3.73 gears will be faster in the 1/4 mile than a stock Cobra with 4.10 gears. I would reccomend going to 4.30's or 4.56's even. As far as the comparison of the 4.6 dohc to a honda engine, honestly the 4.6 is like a big honda engine without the variable valve timing.
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1998 Mark VIII LSC Black/Graphite
2005 Pontiac GTO Silver/Black
Posts: 578 | From: north bay | Registered: Jul 2004
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Spitfiremk24
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Member # 5698
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posted
quote:
Originally posted by 1fast281:
In a stock/bolt on 96-98 Cobra going from 4.10's to 4.30's is definately worth it. With 4.10's you have to shift into 4th near the end of the 1/4 mile which kills et and mph. 4.10's are good for around town, but not for the 1/4 mile because of this. A stock 96 Cobra with 3.73 gears will be faster in the 1/4 mile than a stock Cobra with 4.10 gears. I would reccomend going to 4.30's or 4.56's even. As far as the comparison of the 4.6 dohc to a honda engine, honestly the 4.6 is like a big honda engine without the variable valve timing.
Im no drag racer, but I would argue that shifting at the end of the 1/4 hardly kills your et, you are still moving toward the end... its not like being in neutral makes your car stop... but I can see how it would suck for your trap speed
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04 GT
Posts: 218 | From: East Bay | Registered: May 2005
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50DADDY
CAFords OG
Member # 3076
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posted
Gotta say i liked my 4.10's better.
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"Im not stupid,i just act that way so i dont make you dummies uncomfortable."
"Old age and treachery shall overcome youth and skill."
Posts: 4827 | From: Suckramento | Registered: Jul 2003
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JohnB
Tech Moderator
Member # 969
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posted
quote:
Originally posted by 1fast281:
In a stock/bolt on 96-98 Cobra going from 4.10's to 4.30's is definately worth it. With 4.10's you have to shift into 4th near the end of the 1/4 mile which kills et and mph. 4.10's are good for around town, but not for the 1/4 mile because of this. A stock 96 Cobra with 3.73 gears will be faster in the 1/4 mile than a stock Cobra with 4.10 gears. I would reccomend going to 4.30's or 4.56's even. As far as the comparison of the 4.6 dohc to a honda engine, honestly the 4.6 is like a big honda engine without the variable valve timing.
Ok, have you even DRIVEN a 96-98 Cobra? I dunno, but MY 97 Cobra had 4.10's and it was a requirement to shift into 4th a good ways before the end of the 1/4.
Big honda engine w/o the VV timing? That's saying every OHC engine is like a Honda. Man, I bet you like it when people ask you if that's your Grandpa's Lincoln ![[Razz]](tongue.gif)
Stay with the 4.10's. ![[Wink]](wink.gif)
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1965 Shelby Cobra
1993 Cobra
2012 F150 Raptor
2020 GT500
Posts: 6523 | From: Orlando FL/Redding CA | Registered: Mar 2002
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1fast281
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Member # 4670
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posted
Yes, I have driven my friends 97 Cobra with 4.10 gears and it's a good gear for around town, no question. It is however undergeared for the 1/4 mile, that's why you see the factory stock 4V's that completely wiped out the 5.0's in the last two years running 4.56-4.88 gears. That's why they are handicappping 4v's next year to 3.90 gears, the fastest 5.0 factory stock efforts are at least 3 tenths and 3 mph slower than the fastest 4v cars. 3.90 gears are perfect for a 5.0 but extremelly undergeared for an all out NA 4V setup. Now if you have a forced induction 4V, 3.90's would be fine.
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1998 Mark VIII LSC Black/Graphite
2005 Pontiac GTO Silver/Black
Posts: 578 | From: north bay | Registered: Jul 2004
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hidnn.o.s.
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Member # 1219
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"FACT,", IT IS ABSOLUTELY "NOT" WORTH IT TO SWAP YOUR 410'S FOR 430'S. If you had stock gears and wanted to upgrade all together that's one thing, but it would be a waste of money for the MINOR difference from 410's to 430's.
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R.I.P. Willie G. You are missed on this forum
Posts: 15950 | Registered: Apr 2002
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1fast281
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Member # 4670
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Exactly, that's why I said maybe go for 4.56. The difference between 4.10 and 4.30 gears is only a couple hundred rpm so it won't be that noticeble on the street. At the the track, I would guess in a 96-98 Cobra going from 4.10 to 4.30 it would drop .1-.2 tenths in the 1/4 mile. Going from 4.10 to 4.56 probably at least 3 tenths. Don't fear the gear with the 4.6 dohc...
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1998 Mark VIII LSC Black/Graphite
2005 Pontiac GTO Silver/Black
Posts: 578 | From: north bay | Registered: Jul 2004
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