Changing my mind. Going to a 5.8L instead of a 7.5L October 26, 2009, 09:28:35 PM So yeah. I was out weighing the costs and stuff and desided on a 351w swap. I found a 96 F-250 5.8L engine for cheap. So I will start there.Now what do you recomend for a cam and intake? I will stay with the stock E7 heads for now but I should change the cam out. Plus what is a good intake for all round street use? Is 70mm to big for a TB?Thanks Quote Selected
Changing my mind. Going to a 5.8L instead of a 7.5L Reply #1 – October 26, 2009, 10:19:37 PM Everything works together as one --- Heads, cam intake, exhaust, etc....That being said what are you looking to get out of the vehicle? Projected power?How high are you willing to/want go on the redline?E7's will be a bottleneck on ANY performance oriented 351 IMHO.....They're barely adequate on a stock/near stock 302... Quote Selected
Changing my mind. Going to a 5.8L instead of a 7.5L Reply #2 – October 26, 2009, 10:34:01 PM Quote from: V8Demon;296533Everything works together as one --- Heads, cam intake, exhaust, etc....That being said what are you looking to get out of the vehicle? Projected power?How high are you willing to/want go on the redline?E7's will be a bottleneck on ANY performance oriented 351 IMHO.....They're barely adequate on a stock/near stock 302...I agree stock heads are really your limiting factor. Are you going carb or fuel injection? Quote Selected
Changing my mind. Going to a 5.8L instead of a 7.5L Reply #3 – October 27, 2009, 02:50:27 AM Since he was asking about a 70mm TB...As far as intakes for a 351wl, not so many to choose from, unless you're willing to spend a few $.Mostly depends on your budget, and what power you want it to produce. I don't know without looking at what's available now what there is in the way of intakes systems for a 351 in a car..there's the Lightning stuff, (GT40) but the lowers IIRC are hard to find..I've not looked for 351 stuff for some time now. Quote Selected
Changing my mind. Going to a 5.8L instead of a 7.5L Reply #4 – October 27, 2009, 06:06:53 AM Where you already have a 302, a 5.8 makes perfect sense. You should be able to use alot of your fuel injection existing. I would go with the biggest throttle body you can find for a price you can live with. As far as intake goes, I'd use a "carb" style intake with efi bungs machined in. I think now a days they have them already to go for efi. You can put and elbow on it for the throttle body and have a stock location for the throttle cables.While you got it all apart, I would definately look for some better parts. i would use a stock H.O. cam. Won't beat the HP per dollar there, and i would at least go for some gt-40's. Or even bigger if you have a few bucks to throw around. Quote Selected
Changing my mind. Going to a 5.8L instead of a 7.5L Reply #5 – October 27, 2009, 08:24:37 AM Quote from: FordTruckFreeek;296553Since he was asking about a 70mm TB....You got me there...my point was that it might be cheaper to build a carbed motor. Quote Selected
Changing my mind. Going to a 5.8L instead of a 7.5L Reply #6 – October 27, 2009, 10:04:12 PM I hate carbed motors. I leave them for offroading. I want fuel injection. I know this sounds wierd but I may cheap out for now. If I get a 5.8L engine I may just use the BC Bronco's HO upper to 5.8L lower adapter, BBK headers, swap oil pan, A9L and mass air meter, H pipe and cat back, and get it all up and running. Then I can go for the bigger stuff like H/C/I and all the other stuff.I have drivin the car with the Non HO 302 and it is underpowered and just plain sucks. Even a stock 88 TC has way more power than this car. Quote Selected
Changing my mind. Going to a 5.8L instead of a 7.5L Reply #7 – October 27, 2009, 10:14:24 PM Go with a built and or stroked 5.0 and then you'll have no worries finding parts at all,and you can get tons of power from them as well.. Quote Selected
Changing my mind. Going to a 5.8L instead of a 7.5L Reply #8 – October 28, 2009, 01:11:01 AM Quote from: vinnietbird;296666Go with a built and or stroked 5.0 and then you'll have no worries finding parts at all,and you can get tons of power from them as well..a long time ago, you and i talked about this "power" topic with respect to the 302 and i wondered if you had a chance to look at the main bearing caps and how..if.. new main caps were made, could'nt they be made to a 4 bolt style with the added two holes drilled in the block.this wouldnt work on the front/rear caps but would along the middle. Quote Selected
Changing my mind. Going to a 5.8L instead of a 7.5L Reply #9 – October 28, 2009, 04:07:16 AM Sick88Tbird put an EFI 351w in his car...he could give you some tips probably...here's his 5.8 thread: http://www.foxtbirdcougarforums.com/showthread.php?t=24234Oh, heya Scott:http://www.fordracingparts.com/parts/part_details.asp?PartKeyField=9085 Christmas is coming up...buy me one? lol Quote Selected
Changing my mind. Going to a 5.8L instead of a 7.5L Reply #10 – October 28, 2009, 08:17:21 PM Neat link for the 351 swap. Very interesting reading. Makes me want to think of what my next project will be. Quote Selected
Changing my mind. Going to a 5.8L instead of a 7.5L Reply #11 – October 29, 2009, 01:13:34 AM Quote from: FordTruckFreeek;296699Sick88Tbird put an EFI 351w in his car...he could give you some tips probably...here's his 5.8 thread: http://www.foxtbirdcougarforums.com/showthread.php?t=24234Oh, heya Scott:http://www.fordracingparts.com/parts/part_details.asp?PartKeyField=9085 Christmas is coming up...buy me one? lolyeah,,, :Di was just commenting on how much meat is there to add the modified caps. its been a while since ive been in the bottom end of a motor, i remember there being a lot of space there for a wider cap. Quote Selected
Changing my mind. Going to a 5.8L instead of a 7.5L Reply #12 – October 29, 2009, 01:45:10 AM They're beefier than a king-size slim jim lol Quote Selected
Changing my mind. Going to a 5.8L instead of a 7.5L Reply #13 – October 29, 2009, 05:25:00 AM the stock blocks generally crack from the main bearing studs/bolts all the way through the lifter valley. The problem isn't necisairly from holding the crank down, its the thickness of the block all the way through. Quote Selected
go big Reply #14 – October 29, 2009, 01:03:44 PM if you build a 351w and you use 302 parts you will make 302 power..I am building a 351w 408 stroker this winter as well..if you want to know anything let me know...if can help I will... Quote Selected
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