351W Stroker question
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Freshman User
Joined: Feb 2003
Posts: 29
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From: Tyler, Texas
351W Stroker question
I am planning on building a bullet proof 351w based stroker, but can't decide between a 392 or a 427. Both the 392 stroker crank and the 427 stroker crank are the same price, so I'm left with a headscratcher. Do I go the conservative normal route and build the 392? Or do I go Hog Wild and build the 427? What are the pros/cons for both variants?
Elder User
Joined: May 2001
Posts: 692
Likes: 1
From: Coon Rapids, MN
351W Stroker question
it really depends on what you are expecting to get out of the truck.........
Is it going to be a strip/drag truck?
work truck?
recreational truck?
Going over 4" of stroke in a 351w block presents minor problems that will decrease driveability to some degree. However, there is many mustang owners that run 427w's to work every day and dont complain. If you are looking for 100k+ mile turn key comute to work reliabilty it would be best to stay with the shorter 3.85" stroke.
Talk to some professional engine builders that have experience in the stroking world and ask them what they think would be the best in your situation. Many of the problems created by early generation stroking have been solved in recent years and they will be able to shed some light on these areas better than me.
Is it going to be a strip/drag truck?
work truck?
recreational truck?
Going over 4" of stroke in a 351w block presents minor problems that will decrease driveability to some degree. However, there is many mustang owners that run 427w's to work every day and dont complain. If you are looking for 100k+ mile turn key comute to work reliabilty it would be best to stay with the shorter 3.85" stroke.
Talk to some professional engine builders that have experience in the stroking world and ask them what they think would be the best in your situation. Many of the problems created by early generation stroking have been solved in recent years and they will be able to shed some light on these areas better than me.
Posting Guru
Joined: Mar 2002
Posts: 2,070
Likes: 2
From: Boise, Idaho
351W Stroker question
393's are cheaper. They use the stock 351 rods, and stock 302 pistons. Most kits for 408/418/427 Windsors use custom rods and pistons. The 427's also require reduced-base-circle cams to clear the connecting rods.
Trying to keep the compression down is going to be a challenge. What heads will you use? You'll probably want dished 302 pistons. I think Keith Black makes some inexpensive hypereutectic dished pistons for the 302. Reverse dome is probably a better description; they match up to most closed chamber cylinder head chambers. This makes for good quench characteristics.
If this is a truck engine, you might consider using 5.0 (302) E6SE heads; closed chambers but 69cc volume. Small valves so this is a low speed head for sure.
Did you know you can retrofit a 5.0 SEFI roller cam setup into the 5.8/351 block? Killer torque with roller cams. I'll bet you can spook some 460's with that setup.
Trying to keep the compression down is going to be a challenge. What heads will you use? You'll probably want dished 302 pistons. I think Keith Black makes some inexpensive hypereutectic dished pistons for the 302. Reverse dome is probably a better description; they match up to most closed chamber cylinder head chambers. This makes for good quench characteristics.
If this is a truck engine, you might consider using 5.0 (302) E6SE heads; closed chambers but 69cc volume. Small valves so this is a low speed head for sure.
Did you know you can retrofit a 5.0 SEFI roller cam setup into the 5.8/351 block? Killer torque with roller cams. I'll bet you can spook some 460's with that setup.
