Need Torque Converter?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

airbrushguy · 03-11-2019, 12:46 PM

I have a 305 with a mild cam, headers and Edelbrock carb in my '71 C10. The 350 turbo needs rebuilding but I have a 700R4 to replace it, out of a ;91 Camaro but it has no torque converter.
I use it as a daily driver and don't beat on it but the 4.10 rear is killing gas mileage on hi way.
What torque converter would be the best choice?
Thanks

weq92f · 03-11-2019, 01:24 PM

.
I'm not expert here, but I'll venture a somewhat educated guess: 305, mild cam, 700r, 4.10 gears => something close to stock stall is going to be good methinks with those gears! Something from 1800 to 2200 maybe. That 91 camaro probably had something similar to your 307 in it ( in terms of power/tq output ) so you might just lookup what GM put in there when the camaro was new.

Hth,

-klb

**HO455** · 03-11-2019, 01:49 PM

If your looking for mileage go with a lockup convertor. If you never haul or trailer anything then go Corvette style. If you do then a 3/4 ton truck/suburban version would be the way to go. Every little bit helps the mileage..

03-11-2019, 12:46 PM	#1
airbrushguy Registered User Join Date: May 2010 Location: hawthorne, nj Posts: 217	Need Torque Converter?? I have a 305 with a mild cam, headers and Edelbrock carb in my '71 C10. The 350 turbo needs rebuilding but I have a 700R4 to replace it, out of a ;91 Camaro but it has no torque converter. I use it as a daily driver and don't beat on it but the 4.10 rear is killing gas mileage on hi way. What torque converter would be the best choice? Thanks

03-11-2019, 01:24 PM	#2
weq92f Registered User Join Date: Oct 2016 Location: Dallas Texas Posts: 3,016	Re: Need Torque Converter?? . I'm not expert here, but I'll venture a somewhat educated guess: 305, mild cam, 700r, 4.10 gears => something close to stock stall is going to be good methinks with those gears! Something from 1800 to 2200 maybe. That 91 camaro probably had something similar to your 307 in it ( in terms of power/tq output ) so you might just lookup what GM put in there when the camaro was new. Hth, -klb __________________ 67 C10 fleet fuel injected '70 402, 700r4, 3.73 posi 07 335 sport turbo 6sp 94 Trans Am GT LT1 6sp posi -- sold after 22yrs 99 540 sport V8 6sp -- sold 73 240z L24 4sp -- given to friend 68 C10 step 350/350 3.73 open -- sold

03-11-2019, 01:49 PM	#3
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 10,984	Re: Need Torque Converter?? If your looking for mileage go with a lockup convertor. If you never haul or trailer anything then go Corvette style. If you do then a 3/4 ton truck/suburban version would be the way to go. Every little bit helps the mileage.. __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377



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