289-351 engine swap

Hi there,

I'm driving a '66 coupe with a 289 V8 and C4 tranny with power steering, no A/C
I was wondering what parts I need in order to swap my 289V8 with a 351W.

I figured out that i have to replace my distributor and may have to use swapheaders. Any other parts?

Starter? Intake? C4?

Thanks

<TABLE BORDER=0 ALIGN=CENTER WIDTH=85%><TR><TD><font size=-1>Quote:</font><HR></TD></TR><TR><TD><FONT SIZE=-1><BLOCKQUOTE>
On 2005-10-14 04:20, Easy1 wrote:
Hi there,

I'm driving a '66 coupe with a 289 V8 and C4 tranny with power steering, no A/C
I was wondering what parts I need in order to swap my 289V8 with a 351W.

I figured out that i have to replace my distributor and may have to use swapheaders. Any other parts?

Starter? Intake? C4?

Thanks
</BLOCKQUOTE></FONT></TD></TR><TR><TD><HR></TD></TR></TABLE>Few things to keep in mind. The C4 came in 2 bellhousing/flexplate sizes. I'm guessing yours is the 157 tooth, smaller size. A 351W will need a 164 tooth. You can swap the bellhousings on a C4 so that is not a big deal.
Your oil pan and intake manifold won't fit. Hood clearance is tight with taller dual plane intake or any single plane, plan for a hood scoop or drop base air cleaner if you want a Weiand Stealth or something similar.
Your 66 will have a passenger side rad hose, so you'll need to set your 351 up like a 69 351W (water pump, timing pointer, timing chain cover, 3 bolt crank pulleys) or get a rad with a driver's side hose.
Speaking of rads, the 20" 2 core that is in your car now likely won't be enough cooling for your 351W, especially if it is hopped up at all. I don't know whether a 24" fits in a 66, but check that out or a 3 core 20" at least. A/C adds to the cooling load too.
If you set your 351W up like a 69, your alternator and power steering brackets will work with the addition of a spacer. That spacer is a one year, hard to find item, but it has been re-popped. I got mine from Wild Horses bronco parts. Here is the link Spacer
If you re-use your 289 heads on top of watching for valve clearance and compression ratio, you'll have to have them drilled from 7/16" to 1/2" head bolts. No big deal any machine shop can do it.
For headers, there are swap headers made or you can run the 69 351W manifolds or 289 HiPo manifolds. I went with a repop set of the HiPos. But I have a bias against headers...
Good luck and post back with any questions. I just did this swap in a 68 Cougar, so its pretty fresh in my mind. All that torque from a 351 is going to move that 66 around real nice.
[addsig]

Thanks for the info!

I'm considering my options right now.
I can buy a rebuilt 302 which I can fit right in.
Or I can buy a 351 but in that case I have to buy alot of other parts to make the conversion fit.

I guess the extra weight of a 351 will lower my car a few inches?
Because in that case I'm getting short in tire-body space and will have to invest some more ....

You don't need the larger flywheel and bellhousing for the 351,in fact I would use the 157 tooth instead of the 164 so you will have more clearance in the tunnel area for exhaust.Hedman makes a long tube and a shorty header for this swap.

_________________
1968 mustang 306,stock ported heads,650 Holley DP,weiand xcellerator intake, Comp cams Magnum 292,244dur@050 and 518L,heddman headers,4speed with a 4.11 detroit locker.13.69 at 101 mph.

<font size=-1>[ This Message was edited by: frdnut on 10/16/05 7:11pm ]</font>

Just use your 289 block and get a 347 stroke kit. Problem is the C-4 is weaker in the pre70 years. Have a 70 plus C-4 put in with the bigger input shaft and better valve body. Use the H servo for better shifts.

I suggest a stroked 302 as well. In addition to the hard installation and lack of room, the 351 will add some unwated weight to the front of your car.

I suggest a stroked 302 as well. In addition to the hard installation and lack of room, the 351 will add some unwated weight to the front of your car.

<TABLE BORDER=0 ALIGN=CENTER WIDTH=85%><TR><TD><font size=-1>Quote:</font><HR></TD></TR><TR><TD><FONT SIZE=-1><BLOCKQUOTE>
On 2005-10-14 06:36, Easy1 wrote:
Thanks for the info!

I'm considering my options right now.
I can buy a rebuilt 302 which I can fit right in.
Or I can buy a 351 but in that case I have to buy alot of other parts to make the conversion fit.

I guess the extra weight of a 351 will lower my car a few inches?
Because in that case I'm getting short in tire-body space and will have to invest some more ....


</BLOCKQUOTE></FONT></TD></TR><TR><TD><HR></TD></TR></TABLE>302 would be the easiest, no doubt. The 351 will require extra parts and will be a tigher fit in the 66. Does your current 289 have an aluminum intake &amp; headers? If not running those on the 351 will make up a fair amount of the weight difference. Adding aluminum heads will probably leave you near weight neutral.
On my 68 Cougar, my car hardly dropped at all with the 351 as compared to the 302. A simple, cheap solution to get a little more tire space would be to add a thicker coil spring spacer. Coil Spring Spacer. $20 bucks and you gain 3/4".
[addsig]

... and also the water pump issue isn´t so simple.. I´m running -69 351 with passenger side waterpump. You do need the swap headers (hedmans are the cheapest that fit).

Hey Mosse,

Can you be more specific? I'm getting ready to put a 351 in my 64 Falcon and was planning on using the alum passenger side pump and a 1962 221 Timing Cover with the oil fill tube in it. Think it will work?

Thanks!
[addsig]