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Re: Best Transmission???
You can bolt any 350-400-2oo4r-700r4 to an ls3 there are converter and flexplate issues ,but they are small , .4 of an inch to be exact , no adapter plates needed . the ls3 engine is missing a threaded hole on the top passenger side , and its not necessary , 5 other bolts will hold it .
changing to an overdrive transmission is a great upgrade , as is the ls engine , hey it wont leak  , along with the increased cruising speed you will be getting , Id defiantly upgrade the braking system , especialy if you have 4 drum manual brakes now , minimal front disc power , 4 disc even better , my 68 is running an ly6 ls motor with a turbo 350 behind it , probaly swaping in a 2004r soon for highway cruising
I see you mention "BUILT LS3 " Thats over 500 horse easy , please go for a quality 4 disc power system , hydroboost highly recommended
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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
Last edited by 67 chevelle; 03-11-2014 at 12:05 PM.
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