The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1960 - 1966 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 09-27-2003, 05:02 PM   #1
our64
http://public.fotki.com/street
 
our64's Avatar
 
Join Date: Nov 2002
Location: Winnipeg, Canada
Posts: 169
Changing to an automatic

I am wanting to change my 63 short box with a 230 cid to a TH350 automatic. I have 307 gears in the rear. Will this be sucked out ( any worse than it is) now with the 3spd standard
our64 is offline   Reply With Quote
Old 09-28-2003, 03:56 PM   #2
Iron-Butt
454 club
 
Iron-Butt's Avatar
 
Join Date: Oct 2002
Location: Oklahoma
Posts: 1,348
I am running a 250 with a 200r overdrive. I changed the 373 gear to a 5 lug 307 rear end. I am really happy. I can still pull my harley and cruise at highway speeds.
__________________
David
1965 Chevrolet c-10 454 automatic Custom bbw swb.
1965 Chevrolet C-10 swb (Sold)
1963 Chevrolet C-10 6 Cyl automatic with dual exhaust, pb, ps and 17's.
R.I.P "I will miss you.
1967 Chevrolet C-10 6 Cyl Custom lwb
1939 Chevrolet Coupe, 350 v8 automatic.
1935 Chevrolet 2 Dr Standard in the works.
2015 Harley Davidson Street Glide.
2023 Chevrolet Stingray Z51 Convertible.

I never want to grow up.
Iron-Butt is offline   Reply With Quote
Old 09-28-2003, 09:53 PM   #3
Demmit_Hemmit's 65
Senior Member
 
Demmit_Hemmit's 65's Avatar
 
Join Date: Mar 2002
Location: Peru, Indiana
Posts: 741
I'M RUNNING A 350 WITH A MUNCIE M-22 4 SPEED............I HAVE THE 307 REAR END......................NOT A TIRE SCORCHER BUT VERY GOOD TO RUN ON THE HIGHWAY................HEMMIT
Demmit_Hemmit's 65 is offline   Reply With Quote
Old 09-28-2003, 10:36 PM   #4
fatboy63k10
Registered User
 
Join Date: Jul 2003
Posts: 33
According to the gear ratios below, you would have a 1st gear advantage (lower gear) with the automatic. So to answer the question, the TH350 would be better or "suck" less. The 700r-4 has the lowest 1st gear of the autos.

Turbo 350 1st-2.52 2nd-1.52 3rd-1.00
Saginaw 1st-1.94 2nd-1.68 3rd-1.00
700R-4 1st-3.06 2nd-1.63 3rd-1.00 4th-0.70

Last edited by fatboy63k10; 09-28-2003 at 10:41 PM.
fatboy63k10 is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 09:19 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com