86 cougar 351w swap... June 24, 2014, 10:14:02 PM Swapping motor in my 86 cougar. It had a 5.0 and aod in it and im going to a 351w with ported and milled gt-40 heads with eldelbrock intake and 750 carb and a c-4 trans. Now i already have the motor mounts, 351w double hump rear sump oil pan and the trans crossmember. Now my question is what else do i need? Like where can i get a driveshaft to fit it? That i have the gt-40's on it. can i use long tube headers or shorties? And will they fit? I still have the stock exhaust manifold on it. I'm new to the forum, so treat me like i know nothing...lol Thanks Quote Selected
86 cougar 351w swap... Reply #1 – June 24, 2014, 10:48:44 PM 351 Uses stock 302 mounts. you be hard pressed to get hood clearance but it will bolt in place. i know the 3.8 v-6 used a c5 behind them. Quote Selected
86 cougar 351w swap... Reply #2 – June 24, 2014, 11:05:47 PM I have cowl induction hood on and energy susp. lowering mounts... Quote Selected
86 cougar 351w swap... Reply #3 – June 24, 2014, 11:09:00 PM Are you swapping k-members? Mustang mounts won't work for 85.5ish to 88 cougar/birds. Quote Selected
86 cougar 351w swap... Reply #4 – June 24, 2014, 11:13:02 PM Already swapped k-member from 85 mustang 5.0 ....... Quote Selected
86 cougar 351w swap... Reply #5 – June 24, 2014, 11:19:13 PM Sounds like your pretty well set then.id convert to a floor shifter so you don't need to worry about colum shifter linkages getting in the way. otherwise it should bolt in just like any other mustang. the gt-40's have normal locations for spark plugs so anything should fitthat would a mustang. if you have gt40p heads then you need to be careful on your selection. Quote Selected
86 cougar 351w swap... Reply #6 – June 24, 2014, 11:40:38 PM Yeah, going to floor shifter, when i figure out which one can save me from cutting on good metal! I though headers from a mustang would work, but with the block being taller i might run into some issues. And i have to find out if the driveshaft will fit. Will finish up with engine bay prep later today and be ready to put her in.... Quote Selected
86 cougar 351w swap... Reply #7 – June 24, 2014, 11:46:45 PM Does your car have a console or consolette? The console can be used as a guide for where to trim the sheetmetal. i used a hole saw and some tin snips when i did my t-5 swap. i also had to delete my consolette and add a console to get a factoryish look. check out coolcats.net for help on adding one if you go this route.what is the legnth differance between the c-4 and aod? I always figured they were the same length. Quote Selected
86 cougar 351w swap... Reply #8 – June 25, 2014, 02:34:33 PM They make 351 swap headers. Is that 750 vac or mechanical secondaries? Quote Selected
86 cougar 351w swap... Reply #9 – June 25, 2014, 10:59:55 PM haystack, i have a consolette but going to look at a used console that come with a b&n shifter monday. And it has vac. secondaries.... Quote Selected
86 cougar 351w swap... Reply #10 – June 25, 2014, 11:35:09 PM You will need a T5 drive shaft....for the C4...TravisP.S. I have a big 351w write up in the lounge....just search for 86XR7 351 swap.Travis Quote Selected
86 cougar 351w swap... Reply #11 – June 26, 2014, 01:01:11 AM I re-used my aod driveshaft but suposedly the sn-95's are 5/8-3/4" longer. Quote Selected
86 cougar 351w swap... Reply #12 – June 26, 2014, 09:06:15 PM Travis, i read your 351w swap thread and watched the youtube video and all i have to say is.......Holy fish paste batman!! It was like i was looking at a reality show!! I found myself cheering and rooting for you. You sir, have one sweet build going. I also cant wait til your rolling.... That's one fat cat!! Quote Selected
86 cougar 351w swap... Reply #13 – June 26, 2014, 09:21:55 PM Quote from: jay4cars;435191haystack, i have a consolette but going to look at a used console that come with a b&n shifter monday. And it has vac. secondaries....[/QUOTE. What intake are you using? Quote Selected
86 cougar 351w swap... Reply #14 – June 26, 2014, 09:45:45 PM Thewestie, edelbrock performer rpm 7181...... Quote Selected
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