Rotary Car Club - Acceleration difference between 3.91 and 4.30

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Whizbang

02-13-2009 12:35 AM

Acceleration difference between 3.91 and 4.30

im just curious what the 0-60 difference would really be between the 3.91 and a 4.30 (say in a convertible with a manual transmission). I can figure calculations on this and that , but does anyone have any more real numbers?

probably could have had this in the transmission section...

drewski86

02-13-2009 09:02 AM

In my first gen I ran 9.70 in the 1/8 mile with 3.9 and open diff. I ran 9.16 with 4.3 and a torsen. I think I gained 4-5 mph as well.

Whizbang

02-13-2009 11:37 AM

impressive difference for a simple modification. FB is lighter than the vert by quite a bit, but still.

Flooder

02-13-2009 01:51 PM

I noticed a difference from my GXL with the 4.10 and my GTUs with the 4.30. It's not HUGE, but its noticeable.

Rotary#10

02-15-2009 01:53 AM

Quote:

Originally Posted by Flooder (Post 71762)

I noticed a difference from my GXL with the 4.10 and my GTUs with the 4.30. It's not HUGE, but its noticeable.

i'd agree with owner too
its noticeable in first gear compared to my old fc which had a 4.10 and my current 3.90.

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