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  351W in place of 289

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Author Topic:   351W in place of 289
indyphil
Gearhead

Posts: 877
From: Lafayette, IN, USA
Registered: Jul 2002

posted 08-26-2002 11:35 AM     Click Here to See the Profile for indyphil   Click Here to Email indyphil     Edit/Delete Message   Reply w/Quote
Im thinking about the future in my plans for the engine in my 68 coupe. I have read some posts from others, and would like to know a little more about the 351W engine.

Currently I run a 289 2V, and was intending on dressing it up and powering it up to the 250-300hp range. How well does the 351W fit in the 68 body? I know width wise it should fit, but if i buy headers for my 289, will they fit the 351W when i do the swap? what about all the other accesories. I have power brakes and power steering. I imagine that 300hp is easy for a 351 and won't require as much cam (smoother idle, better vacuum etc..) One last thing...
how much value does my car lose when the engine is non original? not sure if value is a big problem for me anyway but just wondering.

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'68 coupe 289 2V
CAT engine performance engineer

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68stang351
Gearhead

Posts: 267
From: Savoy TX, USA
Registered: Mar 2002

posted 08-26-2002 12:07 PM     Click Here to See the Profile for 68stang351   Click Here to Email 68stang351     Edit/Delete Message   Reply w/Quote
The windsor is actually a good fit. If you buy the headman conversion headers (they cost me about 120 out of Summitt) the windsor will drop in with the headers attached. I've also put these headers on the first windsor IN THE CAR, and they weren't bad at all. The motor looks like it belongs there. I don't know about with a/c and p/s, but I have plenty of room in my 68 coupe with the windsor. Well it is tight, but its manageable, and not as bad as you might think.

Oh yeah, I think the headers I have are actually listed as "289-351W for 64-70 Mustang", so you could buy them and put on the 289 and still use them on the windsor when you put it in.

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Hoofbeats are louder than Heartbeats!
68 Coupe, now with a 351W and 5speed.
Now officially dubbed "THE PIT"
New addition: 63 Fairlane 500!!

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JT
Gearhead

Posts: 186
From: Pearland, Texas, USA
Registered: Oct 2000

posted 08-26-2002 10:53 PM     Click Here to See the Profile for JT     Edit/Delete Message   Reply w/Quote
The A/C and P/S is not a problem. I had to use a P/S belt that was 2 inches shorter so the P/S pump wouldn't touch the windshield washer reservoir. I have about a 1/4" spacer between the engine and the motor mount on the left side so the exhaust manifold doesn't bump the steering box. Good Luck

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JT
'68 Coupe w/351W, C4, P/S, 8" w/3.25, Orig. paint (Wimbelton White) & interior (Ivy Gold), A/C (not working)
'01 BULLITT #3357, Dark Highland Green

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mustangboy
Gearhead

Posts: 670
From: Ont, Canada
Registered: Mar 2002

posted 08-27-2002 02:13 AM     Click Here to See the Profile for mustangboy     Edit/Delete Message   Reply w/Quote
Just look at a 69-70 mustang with the 351 as original equipment.The shock towers and front end are the same on your 68,actually the small block 68 cars will have a little extra room as they don't have the extra shock tower bracing.As for depreciating the value of your car,just keep all the original parts and don't change anything that can't be changed back.All the stuff you'll be doing is strictly bolt in so it shouldn't be a problem.

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indyphil
Gearhead

Posts: 877
From: Lafayette, IN, USA
Registered: Jul 2002

posted 08-27-2002 10:30 AM     Click Here to See the Profile for indyphil   Click Here to Email indyphil     Edit/Delete Message   Reply w/Quote
Ok so heres the important question.
If i buy a long block 351W how many new parts will it need and how much will transfer from my 289?

I assume most of my 289 stuff will work?

I will need a big carb and intake, but will my distributor, fuel pump, oil pan, etc.. be ok?

If someone out there has gone from 289 2V to a 351W 4V in as cheap and easy a way as possible maybe they can fill me in. my 289 runs smooth and smoke free but until i tear into it I wont know what condition it is in. chances are it might be cheaper and easier for me to make the 300hp i want by repalcing it with a 351W.

One more thing, how well does my '68 C-4 transmission and 8 inch rear end handle the power of the 300+ hp 351W engine?

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68stang351
Gearhead

Posts: 267
From: Savoy TX, USA
Registered: Mar 2002

posted 08-27-2002 12:06 PM     Click Here to See the Profile for 68stang351   Click Here to Email 68stang351     Edit/Delete Message   Reply w/Quote
Your distributor won't work, the oil pump shaft on a windsor is bigger, your oil pan won't work either, the rear main seal is larger on the windsor. I know this because in trying to buy inexpensive used parts, I have acquired these parts for 289-302s only to come home and find they didn't work on the windsor. I don't see a reason why you couldn't use your old fuel pump though. Of course the intake is wider so you'll need one of those too.

------------------
Hoofbeats are louder than Heartbeats!
68 Coupe, now with a 351W and 5speed.
Now officially dubbed "THE PIT"
New addition: 63 Fairlane 500!!

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indyphil
Gearhead

Posts: 877
From: Lafayette, IN, USA
Registered: Jul 2002

posted 08-27-2002 01:12 PM     Click Here to See the Profile for indyphil   Click Here to Email indyphil     Edit/Delete Message   Reply w/Quote
Thanks for the advice... I can now make a more informed decision.
Basically the engine fits nice (assuming my drivetrain will take the extra power and torque)

Its up to me whether I build the engine up slowly from inexepensive/used parts, or go out and buy a crate motor, but converting my 289 would probably be more hassle than its worth. id be better off keeping the original 289 to one side and using a complete 351, if I choose the new engine route.

Thanks once again, everybody here is so helpful. Imagine how much the advice would cost if you had to buy books and magazines!

Phil

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'68 coupe 289 2V
CAT engine performance engineer

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ice'68
Gearhead

Posts: 127
From: Fresno, CA
Registered: Apr 2002

posted 09-04-2002 01:44 AM     Click Here to See the Profile for ice'68   Click Here to Email ice'68     Edit/Delete Message   Reply w/Quote
quote:
The windsor is actually a good fit. If you buy the headman conversion headers (they cost me about 120 out of Summitt) the windsor will drop in with the headers attached.

Do you happen to have a part # for those headers? I'm planning on doing the 289 to 351W swap soon.

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