351w biuld questions

Venomous94Cobra · Mar 23, 2010

hey guys im fixing to start my 351w biuld for my 94 cobra, im starting with a bone stock good condition 94 roller 351w with 60k on it, im just wanting a sweet reliable street engine that i can play hard with on the weekends. so far here what i was thinking:

stock bottom end, gt40p heads(ported and polished), crane 1.72 rr's, i have no idea what can, anyone have any good suggestions for the crane 1.7 rr's? edelbrock super victor efi intake manifold (or simular like the hurricane manifold) with some sort of elbow and 75mm tb, 76mm maf, 24lb injectors or larger if needed, long tubes if i can find a good set, any suggestions? summit offers a oil pan conversion kit so it will fit in the sn95's and a msd pro billet distributor.

if anyone with any knowledgeable suggestions please let me know, like i said though this is just a good fun street engine, but i still want some what powerful ride just reliable. thanks

Paul · Mar 23, 2010

Heads are too small. Intake is WAY too big. Cam should be based on heads. Rest of it is reasonable.

Use a stock truck distributor. MSD distributor electronics suck.

Moroso makes a nice 351W pan for pretty cheap IIRC.

Venomous94Cobra · Mar 23, 2010

i thought gt40p's flowed pretty well when ported? ive had pretty good luck with msd, ive got one of there pro billets in my 306 now with there coil and its been working flawlessly.

If not the gt40's then what would be a good head that wont kick my wallets ass? also im looking for more upper rpm power wich is why i choose that intake manifold.

Paul · Mar 23, 2010

302 heads make 302 power. You'll want something like TFS Twisted Wedge, Perfomer RPMs, AFR 185s, or similar - at a minimum.

Save the money on the MSD - there's better places you can spend that money.

There's no reason to put that monster intake on an otherwise very mild combo. Get something like a Performer RPM with the 351W lower.

Paul.

wannaboost94gt · Mar 23, 2010

Didn't Lightnings come with gt40 heads? Why to small, even when their ported? Not saying it's the best but it would make decent power for a DD right? :dontknow:

Venomous94Cobra · Mar 23, 2010

the lightings did come with gt40 heads, i just figured since the gt40p's are the highest flowing heads ford produced then they would do pretty good especially when your ported? not to mention there inexspensive.

Paul · Mar 23, 2010

You asked for an opinion - I gave you mine. If you're set on GT40ps, then get 'em. I'm just saying I wouldn't. I would never "build" a motor with those heads.

Even if they're the highest flowing heads FORD produced, doesn't mean their flow is comparable to a decent set of aftermarket aluminum heads. The "daily driver" piece is irrelevant because you can go 100,000 miles on a set of Edelbrocks without any trouble.

Finally, I don't generally trusted "ported" heads unless I know the person who is doing the porting knows what they're doing, and the flow numbers back it up. Just opening up the ports won't necessarily increase flow, and you can very easily sacrifice velocity.

There's my suggestions.

Paul.

Paul · Mar 23, 2010

Further, the first gen lightnings made a whopping 240 hp. If you want to make that much power, stick an intake on your 302 and you're there.

Paul.

wannaboost94gt · Mar 23, 2010

The daily driver comment was more aimed at he wont need the best of the best to complete the project and he'd save some $$$, hence

" wanting a sweet reliable street engine that i can play hard with on the weekends",
"like i said though this is just a good fun street engine, but i still want some what powerful ride just reliable"

I think to the OP that the daily driver comment is relavant...

Also people build 300 hp ported gt40 headed 302's all the time, why wouldn't you be able to surpass that with a 351? Why wouldnt that be fun and reliable, the OP was asking for input on that not an all out drag car?

I know about everyone would get aftermarket heads when building a motor but, not everyone can afford them... I don't think that applies to you Mr.$2400.00 gauges!!! :notworthy: lol you got the pimp everything!

.02 :thumbsup:

wannaboost94gt · Mar 23, 2010

Nobody said Aluminum heads were not reliable. :kiss:

Passenger · Mar 23, 2010

Im gonna go with Paul on this one. If your gonna go through the effort of the 351 swap, don't gay it up and shitty heads and such.

Paul · Mar 23, 2010

If you're not going to try to make more power than a bolt-on 302, there is absolutely no reason to go to all the effort and trouble to swap in a Windsor. Trust me.

Further, GT40Ps have annoying header fitment. You'd have to find swap headers that will fit them - I'm not sure if there are any out there. You'd have to look around.

The suggestions I've provided are nowhere near an all-out drag car. I didn't say "get a 460 cubic inch stoker with a Bryant crank, Oliver rods, ross dome pistons, Brodix Neal heads, and a Hogan's intake."

A set of $1000 Edelbrocks will outperform the GT40P heads, and after you take all the time and money to clean up and port those heads, you might save a couple hundred bucks over an inferior set of heads.

Paul.

Steven · Mar 23, 2010

I'll agree to that. Some HCI combos have seen near 400hp on stock 5.0 bottom ends. They pop up every now and then and are legitimate (i.e. sheets to back it up). The windsor is heavier. It requires alot of expensive swap parts, and a good tune. You seem as though you just want a windsor for a windsor. If your after power its the right way, but a daily driver, i'd pick up a 2-3k dollar HCI setup and rock it with bolt ons. That would be the perfect daily. Not to mention a windsor mustang usually gets like 10mpg lol

Venomous94Cobra · Mar 24, 2010

ok well what about this set up? and thanks for the help also, im not doubting you im just learning so there for im gonna ask questions like that, gotta remember ive been biulding alot of high power 4 cylinders for a while.

stock bottom end, arp head studs, edelbrock victor jr heads, 1.6 rr's, hardend pushrods, Still know idea on what cam, any ideas, i liker upper rpm power? trick flow intake manifold or edelbrock? still gotta find some long tube headers?

im also looking for the correct oil pan kit, ive looked at moroso and canton, but theres so many freakin part numbers i dont know which one i need, anyone have a part number, i would prefer like a kit with the sump and all, thanks.

Paul · Mar 24, 2010

Back to basics.

- How much money do you have?
- How much power do you really want to make?
- You say you want a reliable fun streetcar, but then you want high RPM power. If you want one, you're better off without the other. High RPM cars are less useful on the street, and tend toward more radical engine combinations that aren't as conducive to the "reliable fun streetcar" mantra.

... and so on and so forth.

Paul.

ZillaRacing989 · Mar 24, 2010

i understand wanting to do a 351.. ive had a built 351 in a fox.. but if you want more top end than bottom end why dont you just build a 302. the 351 is gonna be more prone to making more torque on the bottom than a 302.. or through a cheap turbo kit on your 302.. 351w are not much of a top end motor.. unless they have the bottom end to go with it..

Venom351R · Mar 24, 2010

before going feet first into a 351 swap read this first.

http://www.mustang50magazine.com/techarticles/m5lp_0206_mustang_351w_swap/index.html

I have a H/C/I 351, parts and numbers are in my sig.

wannaboost94gt · Mar 24, 2010

Paul said:
Back to basics.

- How much money do you have?
- How much power do you really want to make?
- You say you want a reliable fun streetcar, but then you want high RPM power. If you want one, you're better off without the other. High RPM cars are less useful on the street, and tend toward more radical engine combinations that aren't as conducive to the "reliable fun streetcar" mantra.

... and so on and so forth.

Paul.

+1 Whats your true goal?

Venomous94Cobra · Mar 24, 2010

i think most are missing what im really saying here. im not saying i want a top end killer, i just just want most of its power band in its upper rpms, like 3500-6000,6200 rpm. wich is like the factory rev limit. ive got the money to biuld the engine with the last setup i just gave, thats not the problem, but i was researching and studying and the last setup i posted seemed like a nice mild mannered 351w. I dont really have a power goal in mind to be honest, ive got another 351w that going to be biult for stupid power, this one is just to have some good fun while its in the process.

Paul · Mar 24, 2010

Good, but you didn't answer two questions:
- How much money do you want to spend on this. All in. Are you paying for labor, or doing everything yourself?
- How much power do you want to make? Come up with a ballpark number.