Also, as I have been collecting, you might consider going with an OD tranny
(55 or later, open drive shaft) & consider using a stock pickup (55 or
later) open 4.11 setup (does require minor spring mount mods) & get double
(or half; depends how you look at it) the end ratio (approx; the Borg
Warner's are a 30% reduction) & get 6 gears to boot. This way you don't
loose your starting 1st gear ratio i.e torque. And YOU have more weight
than a pickup to get off the line.
I wanted to go with a 3.70 or close rear ratio (I understand 70's/80's type
4WD Blazer rear end's fit width real well & only minor mounting mods. & the
4WD keeps the 6 lug chevy wheel bolt pattern). I then talked to a list
member that has used a 60's open 4.11 setup with a 55 type OD tranny on his
AD PU & said he's has gotten more than a few tickets for 70+ (more than I
would want to go with a stock front end setup).
Understand, though, that OD tranny (with free wheeling type operation)
requires different driving skills. Let me know (off list) if this interests
you & I can point you to many info web pages; mostly from our list members!
Regards,
Doug Pewterbaugh
dpewter@msn.com
Denton, TX
49 3104 216 5-window
----- Original Message -----
From: <josiah.bartlett@exgate.tek.com>
To: <givens@hal-pc.org>; <oletrucks@autox.team.net>
Sent: Tuesday, June 11, 2002 5:14 PM
Subject: RE: [oletrucks] Fw: rear end 355 or ?
> 3.55 is the lowest number made for your rear end. I think that if you go
any
> lower your 248 will run out of torque anyway and you will get bad gas
> milage. You might go for slightly taller tires at the same time, it will
be
> good.
>
> -----Original Message-----
> From: Ronald I. Givens [mailto:givens@hal-pc.org]
> Sent: Tuesday, June 11, 2002 2:24 PM
> To: oletrucks
> Subject: [oletrucks] Fw: rear end 355 or ?
>
>
> ----- Original Message -----
> From: Ronald I. Givens
> To: old-chevy-truck
> Sent: Tuesday, June 11, 2002 4:24 PM
> Subject: rear end 355 or ?
>
>
> Howdy,
> I have a 1951 GMC Suburban (4800 pounds) 248 motor, 411 rear end, original
> four speed. Can anyone tell me if I should go to something other than a
> 355,
> I'm told I will only gain 15% in speed with a 355, in other words 55 to
> 64mph,
> not that I plan to go faster than 65, but wouldn't it be better to slow
the
> motor down even more. What is the next gears 338, 311, 243, ? It does
not
> seem that I'm gaining much. Understand I'm not hot roding, just stock, on
> the
> road, every day. I've got someone that sets up rear ends every day, to
put
> it
> in for me, I'm just trying to know which way to go, before I spend this
big
> bucks. If there are better gears to go for, who do I buy them from...
> Is 355 best thing to do?
> thanks for any info
> ron givens
> Houston, Texas
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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