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How is it for everyday driving or would you go with 4.10 I plan on doing alot of suspention mods and only want to do the rear end once so please tell me what you think?
It is a 86 with 65mm tb custom intake e303 mac headers o/r h
pipe and flowmasters 2.5 all the way out and 75 shot of nos
 

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4.30 will be way to much gear for spray...Use a 3.55 and the short tire if possible..Btw i run 4.56's in my class car and it's street driven"sometimes.
 

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Discussion Starter #3
PURESTREET5006 said:
4.30 will be way to much gear for spray...Use a 3.55 and the short tire if possible..Btw i run 4.56's in my class car and it's street driven"sometimes.
I plan on running a 28in slick and 26in street tires and I want this thing to be crazy off the line :evilgrin: what about 3.73 or 4.10?
 

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I'm running 3.73s and wish I had something a little steeper. 4.10's or 4.30's. Either way, with the 3.73's I haven't had a problem with my nitrous systems and running out of gear, of course that would change with a gear swap.
 

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Then, obviously, you must not be using a stock shortblock and cam. The stock cam stops pulling at 5400rpm and with spray there is no way you will make the traps in 4th. Even with an E cam, which only pulls to 5700 at most , you would never make the traps with 3.73's and spray. I used an X cam once and 4.30 gears and had to shift it at 6300 just to make the traps with 26" tires.
 

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i don't know if i would go that big, i have 4.30's in my race car on 28" tires. on the 408 i had, i was at 6500 in 4th when i crossed but that was at 125 mph too. it all up to you but i would definitly go with a 3.73 or maybe a 4.10. its all about what you set your motor up for, just get all the info you need and do it right the first time
 

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I ran 3.73's and that was just right for a bolt on stang with a 100-125 shot of nitrous....i'd cross the trap at 105 and my top speed in 4th was 115 with the 245/45/16 (24 inch tires)

if you plan on every taking a trip on the freeway with the car 4.10's would be a bit to much and 4.30's you'd be in the 55mph lane in a 75mph zone...
 
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