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10-18-2014, 09:46 PM
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#1 |
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Registered User
Join Date: Oct 2014
Location: Denton NC
Posts: 3
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68 c10 454 bb
Hi everyone new to the forum i recently just purchased a 1968 c10 shortbed with a 454 big block turbo 350 trans and a 410 gear, im searching for advice as to what transmission to swap into it im after something with overdrive and that will hold up well with the 454 any info would be greatly appreciated and thanks in advance!
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10-18-2014, 10:19 PM
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#2 |
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Senior Member
 
Join Date: Jan 2007
Location: Turlock, CA
Posts: 8,601
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Re: 68 c10 454 bb
welcome aboard!!! 700r4 if your budgets tight and your 454 is mild. 4L80E if you got some cash, thats your best option...
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Please help my sister in law with her battle with cancer https://gofund.me/902f6fce Survivor "Lil’ Mint" (67 c10 40k mile light green original paint) Project "C10 Fever" (68 factory black 396 swb) Project "Little Sister" (70 c10 blue original paint refresh) Project "Blue Bomb" (70 c30 blue original paint refresh) SOLD Project "Vitamin C" (71 c10 orange original paint refresh) SOLD |
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10-22-2014, 12:29 AM
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#3 |
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Registered User
Join Date: Oct 2014
Location: Denton NC
Posts: 3
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Re: 68 c10 454 bb
appreciate the info got another question for you im wanting to be able to drive this truck when i want to country roads,highways etc thinking about gearing the rear 342 but im torn between 342 and 373 a lot of people tell me to go 373 but ive heard that there really isnt much difference between 373 and 410 any input would be greatly appreciated
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10-22-2014, 02:14 AM
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#4 |
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Registered User
Join Date: Jul 2014
Location: Missouri
Posts: 1,427
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Re: 68 c10 454 bb
Goin 373 with mine. But that's me. Do what you wish its your truck
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Jack Personal Fleet: Family Fleet: 1955.5 Panel 1959 Apache 1968 ShortWide 1969 ShortStep |
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10-22-2014, 01:32 PM
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#5 |
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Registered User
Join Date: Oct 2014
Location: Denton NC
Posts: 3
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Re: 68 c10 454 bb
IM just wanting to be able to go 60 to 65 and not be turning 4500 5000 rpms with th th350
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10-22-2014, 02:29 PM
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#6 |
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Registered User
Join Date: May 2013
Location: WEST PALM FLORIDA
Posts: 1,174
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Re: 68 c10 454 bb
2004r would be my choice , with the 700r4 you will have to cut the driveshaft , and if you run a 700 be aware the low gear is very low , with the 411s in there now you would need some very tall tires
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68 Long Fleet , ly6 , turbo 350 , 3-5 drop , original paint , front discs 67 Small window , 7 foot bed , tweaked 6.0 LSX 2004R Medium Olive 58 Apache fleet , 235 , offy intake , dual exhaust , 4 on the floor , red/white 69 Long Fleet , Custom , 6.0, 4l60 , AC , Medium Olive |
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10-22-2014, 04:02 PM
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#7 |
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Registered User
Join Date: Oct 2008
Location: Marianna Arkansas
Posts: 7,263
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Re: 68 c10 454 bb
You need to keep in mind the the first gear on the 770R4 is super low and with the torque you will be blowing the tires off if not careful. that is why some say go with the 42's or 73's being the lowest. Out of the three trucks I'm building two will be 454 trucks and have not decided on the overdrive or not. That is not an issue of having them cause I have some 4L60E and 4L80E laying around. One might get a 4L80E [supposed to be my personal truck but we all know how that goes] I would go with the 700 and 3:42's and drive on. I built a custom "copy" of what I thought GM should have done in 1990 with the SS454 and built a extra cab and used a 342 and a built 700. It was a fun truck and got decent mpg. Jim
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10-22-2014, 04:51 PM
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#8 |
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Registered User
Join Date: Jan 2011
Location: Chattanooga, TN
Posts: 2,144
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Re: 68 c10 454 bb
Another vote here for 700R4 and 3.42.
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'83 K20-TPI '73 C10 '79 C10-ex-diesel(SOLD) '07 Tahoe(Son driving) '14 Suburban-DD '71 C10-current project |
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10-22-2014, 06:13 PM
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#9 |
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Registered User
Join Date: May 2014
Location: Dallas, TX
Posts: 10
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Re: 68 c10 454 bb
4l80e with 3.73 would be my choice behind a big block. I heard stock 700r4 can't handle a lot of power but I've never used one so I wouldn't know for sure.
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10-22-2014, 07:11 PM
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#10 |
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All about them K’s
 
Join Date: Jun 2014
Location: Farmington, New Mexico
Posts: 6,332
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Re: 68 c10 454 bb
Above is my vote. You've got to at least put some extra money into the 700 r to get it to hold up over time behind the big block. Not to mention dealing with it searching between gears at 40-50. I've had a few of them and don't plan to use them anymore. Some people love them... I'm not one of them. My '98 is a Factory big block truck and the 80e is original with 200,000 on the clock and no signs of giving up. Enough said!
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Tyler '57 3100 http://67-72chevytrucks.com/vboard/s...d.php?t=813888 '72 K20 Cheyenne http://67-72chevytrucks.com/vboard/s...d.php?t=662879 ‘69 K10 SWB http://67-72chevytrucks.com/vboard/s...d.php?t=805206 '98 Silverado LT K2500HD ECLB Vortec 454/4l80E: 6" lift 315/75/16's ‘87 IROC-Z all original 50K mile survivor TPI 305 IROC Blue ‘10 Camaro 2SS/RS Aqua Blue Metallic #93 -version 2.0 
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10-23-2014, 06:56 AM
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#11 | |
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Registered User
Join Date: Jan 2011
Location: Chattanooga, TN
Posts: 2,144
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Re: 68 c10 454 bb
Quote:
4L80E is a fine transmission, but you have to have a computer to run it.
__________________
'83 K20-TPI '73 C10 '79 C10-ex-diesel(SOLD) '07 Tahoe(Son driving) '14 Suburban-DD '71 C10-current project |
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10-23-2014, 10:35 AM
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#12 |
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Senior Member
Join Date: Jul 2009
Location: Hayden, Al.
Posts: 4,148
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Re: 68 c10 454 bb
I'm going to be running a 468 with a TCI built 700r4 (traded into the trans) and 3.42 gears with a 30" tall rear tire. It should be great at 60-70mph.
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