351W to 408W Q's

[Old Scout]

I just got off the phone with a friend of a friend and he wants me to build him a 408 Windsor for his 91 full size Bronco. His 351 has a rod knocking and is getting read to die. What is the deal with a 408? It has been 20 years since I played with a ford motor much less a small block. Any good URLs for info/Parts??? TIA

[NicksTrix]

here's site that does a number of various ford stroker kits. www.f-p-s.com

they sell a kit for a 408 and also a 426. prety decent prices for the quality of parts they are using.
another good source for some parts is this site:http://www.racersauction.com/auction/index.cfm
lots of diffent stuff on there, alot of motor parts
take care and good luck-
nicks trix

<IMG SRC="smilies/blender.gif" border="0">

[Paul Gagnon]

Originally posted by Old Scout:
<STRONG>I just got off the phone with a friend of a friend and he wants me to build him a 408 Windsor for his 91 full size Bronco. His 351 has a rod knocking and is getting read to die. What is the deal with a 408? It has been 20 years since I played with a ford motor much less a small block. Any good URLs for info/Parts??? TIA</STRONG>

You can buy complete brand new stroker shortblocks directly from Ford Racing (used to be called Ford Motorsports). Prices seem pretty competitive. They also have stroker cranks available separately.

[emsoffroad]

Bore 30, 400 crank, Mopar rods, new pistons, new cam = 426. Not a good street motor, but they run the drags great.

[Old Scout]

Originally posted by emsoffroad:
<STRONG>Bore 30, 400 crank, Mopar rods, new pistons, new cam = 426. Not a good street motor, but they run the drags great.</STRONG>

Now were getting some were. What is a 408 and are the heads off of a 91 351w going to work?

[Paul Gagnon]

Originally posted by emsoffroad:
<STRONG>Bore 30, 400 crank, Mopar rods, new pistons, new cam = 426. Not a good street motor, but they run the drags great.</STRONG>

Aren't the 400 main bearing journals larger than the 351W?


Old Scout check these links. It's a 392 but that may be close enough.
http://www.fordracing.com/performanceparts/html/PartDesc.asp? PartType=&PartNumber=M%2D6007%2DD392%2A&VehicleTyp e=

http://www.fordracing.com/performanceparts/html/PartDesc.asp? PartType=&PartNumber=M%2D6009%2DA392%2A&VehicleTyp e=



http://www.fordracing.com/performanceparts/html/PartDesc.asp? PartType=&PartNumber=M%2D6303%2DA385%2A&VehicleTyp e=

[ 10-25-2001: Message edited by: Paul Gagnon ]

[Old Scout]

Thanks Warthog! I'm going the easy route and going to have him buy the short
<IMG width=350 height=246 SRC="http://www.pirate4x4.com/ubb/uploads/6009-A392.jpg">
And then most of my work is done <IMG SRC="smilies/biggrin.gif" border="0"> <IMG SRC="smilies/biggrin.gif" border="0">

[Paul Gagnon]

Originally posted by Old Scout:
<STRONG>Now were getting some were. What is a 408 and are the heads off of a 91 351w going to work?</STRONG>

A 408 is 4.030 bore x 4.0 stroke.

[Paul Gagnon]

Originally posted by Old Scout:
<STRONG>Thanks Warthog! I'm going the easy route and going to have him buy the short
<IMG width=350 height=246 SRC="http://www.pirate4x4.com/ubb/uploads/6009-A392.jpg">
And then most of my work is done <IMG SRC="smilies/biggrin.gif" border="0"> <IMG SRC="smilies/biggrin.gif" border="0"></STRONG>

The bonus part is that it is all brand new and spin tested before it leaves Ford. <IMG SRC="smilies/glasses.gif" border="0">

[StoopidMonkey]

Check this place out. www.speedomotive.com they have almost every stroker application you can think of, and some kick ass long rod kits for ford motors too.

[emsoffroad]

The 351w uses the same size mains as the 351/400 mod. I think you have to get the rods cut, or its the block. Its been a long time since I looked into it. But the SVO is a great way to go. No guess work!

[cobyhughey]

Originally posted by emsoffroad:
<STRONG>Bore 30, 400 crank, Mopar rods, new pistons, new cam = 426. Not a good street motor, but they run the drags great.</STRONG>

Um...actually, they make a **great** street motor. Been running a 423 (only went .040" over on the bore) for four years now, and I drag it every year too. I also wheel it in the rocks every chance I get. Why is it a great street motor? Very docile idle (sounds only mildly rumpity, with a fairly stiff cam in it, due to the extra cubes which tend to calm it down), BUTTLOADS of torque, peaks at about 5,000rpm (this cam, anyway), no worse heating probs than stock, very reliable, has **very** quick revving due to lighter weight rotating mass, etc., etc. Again...in my opinion after running one for years....very good choice for a strong street motor.

[ 10-27-2001: Message edited by: cobyhughey ]

[cobyhughey]

Might I strongly suggest putting in a roller cam? It goes a very long way towards driveability and a broader torque curve, as well as fuel mileage. You'll get more HP and torque across the board without having to go to a cam that doesn't idle well. I ran mine with both a nonroller and a roller cam, and I'd heartily recommend going with a roller cam. FWIW, my cam is a 220/229@.050" duration roller cam. Below are the sims of the exact same stroker motor dyno charts with the old flat tappet cam vs the new roller cam if interested.

Originally posted by Paul Gagnon:
<STRONG>The bonus part is that it is all brand new and spin tested before it leaves Ford. <IMG SRC="smilies/glasses.gif" border="0"></STRONG>

[ 10-27-2001: Message edited by: cobyhughey ]

[66CJdean]

Here are some good sources for prices. The 408 is a good choice if the motor is going to get used quite abit. www.347streetfighter.com www.dssracing.com www.fordperformancesolutions.com www.excessivemotorsports.com
And I would second what the last post said and run a roller cam/& rockers for sure.

[robellis77]

Well, engines are one area I have yet to mess with. The 351W in my 94 Bronco has got 110000 miles on it and still runs great, but I don't expect it to last forever. It seems that most built engines are running carbs. I guess I'm spoiled and don't want to start messing with carbs. You can do a stroker with fuel injection can't you?

[cobyhughey]

Yes, the stroker 423 I'm running is multiport SEFI injected, not carbed. I like it that way muuuuch better than carbed. No worries.

Originally posted by BroncoRob:
<STRONG>Well, engines are one area I have yet to mess with. The 351W in my 94 Bronco has got 110000 miles on it and still runs great, but I don't expect it to last forever. It seems that most built engines are running carbs. I guess I'm spoiled and don't want to start messing with carbs. You can do a stroker with fuel injection can't you?</STRONG>