400 Strokers
Thread Starter
|
Post Fiend
Joined: Jan 2003
Posts: 10,323
Likes: 2
From: Montana Territory
400 Strokers
i was wondering about turning my motor over to fuel injection I have heard that you can gain about 100 horsepower for about $800 for a new one. I dont want to spend that but will a factory fuel injected 429/460 intake fit. I thought they were pretty close it would be better if i could find a 400 FI but I havent ever seen one.
Elder User
Joined: Sep 2001
Posts: 887
Likes: 1
From: Jax FL
400 Strokers
>i was wondering about turning my motor over to fuel
>it would be better if i could find a 400 FI but I
>havent ever seen one.
probe industries will make a efi intake for you. the cost is about $758.
i cant remember if its a 351C torker 2 intake or not. if it is you will have to use the weiand intake plates.
>it would be better if i could find a 400 FI but I
>havent ever seen one.
probe industries will make a efi intake for you. the cost is about $758.
i cant remember if its a 351C torker 2 intake or not. if it is you will have to use the weiand intake plates.
Elder User
Joined: Feb 2001
Posts: 829
Likes: 0
From: Porterfield
400 Strokers
>Is your motor nitrous assisted? 799 hp would be 1.8 HP Per
>Cubic Inch which is high for a naturally aspirated
>engine.Not saying i DON'T BELEIVE IT. Just curious.
>Thanks...
NO it's not nitrous assisted... But you can make lots of power from any engine if your able to take advantage of all it breathing capabilities.Put a 1000 Cfm Carb. on it and use all 1000 Cfm to fill this motor and you'll make power.
>Cubic Inch which is high for a naturally aspirated
>engine.Not saying i DON'T BELEIVE IT. Just curious.
>Thanks...
NO it's not nitrous assisted... But you can make lots of power from any engine if your able to take advantage of all it breathing capabilities.Put a 1000 Cfm Carb. on it and use all 1000 Cfm to fill this motor and you'll make power.
Posting Guru
Joined: Jun 2002
Posts: 1,099
Likes: 0
400 Strokers
It's hard to say how much potential is left in ShaZam's motor. I would think that Yates, Blue Thunder, SVO, Ultra Flo Machining, CHI, and Arao would flow more air than the cast iron heads with port plates.
I'm wondering what the power limit is for the block.
As far as long stroke motors are concerned, it sound archaic like the old flatheads, but in reality, it's a modern practice with Ford Modulars.
The 5.4 and 6.8 V10 use a 3.55" bore with a 4.17" stroke. They make excellent low speed torque. The R model Cobra uses a 5.4 with 4 valve heads. This is not a low RPM motor! Since the block is 10.08" tall, they can use long rods that reduce the rod to stroke ratio. The pistons are also very short, so their light weight puts far less strain on the crank and rods.
Correct me if I'm wrong, but I think the Chevys are a lot more limited by a long stroke because of the 9.8" deck height.
400 & 460 are 10.3".
The 4" stroke and 6.58" rods give a 1.645 R/S ratio.
A 4.17" stroke with 6.795" rods is a 1.630 R/S ratio.
That's only a 1% difference.
I'm wondering what the power limit is for the block.
As far as long stroke motors are concerned, it sound archaic like the old flatheads, but in reality, it's a modern practice with Ford Modulars.
The 5.4 and 6.8 V10 use a 3.55" bore with a 4.17" stroke. They make excellent low speed torque. The R model Cobra uses a 5.4 with 4 valve heads. This is not a low RPM motor! Since the block is 10.08" tall, they can use long rods that reduce the rod to stroke ratio. The pistons are also very short, so their light weight puts far less strain on the crank and rods.
Correct me if I'm wrong, but I think the Chevys are a lot more limited by a long stroke because of the 9.8" deck height.
400 & 460 are 10.3".
The 4" stroke and 6.58" rods give a 1.645 R/S ratio.
A 4.17" stroke with 6.795" rods is a 1.630 R/S ratio.
That's only a 1% difference.
New User
Joined: Jan 2003
Posts: 14
Likes: 0
400 Strokers
I wanted a 4.250" stroke with a 6.8" rod. Custom piston. I could sacrifice some rod ratio and go 6.535" rod with a cheaper common 1.600" piston for a 440 CI stroker. People say it'll be crap.
I had dropped down from my original idea of a 4.500 stroke 4.040 bore for 461 CI. I elected to build an actual 460 instead. However, 4.5" crank would have been custom ground. Also, I was told the bore speed would increase with the long stroke and cause a lot of heat / wear & tear. There is a company coming out with one for the Windsor. I may go back to this idea and use a 351W harmonic balancer and add weight to the crank if that'll work.
"D"
I had dropped down from my original idea of a 4.500 stroke 4.040 bore for 461 CI. I elected to build an actual 460 instead. However, 4.5" crank would have been custom ground. Also, I was told the bore speed would increase with the long stroke and cause a lot of heat / wear & tear. There is a company coming out with one for the Windsor. I may go back to this idea and use a 351W harmonic balancer and add weight to the crank if that'll work.
"D"
Posting Guru
Joined: Jun 2002
Posts: 1,099
Likes: 0
400 Strokers
I don't know where you can find a 4.250" stroke crank unless it's custom ground. If you do get one, there's no guarantee that a 6.535" rod is long enough for the piston to clear the 4.25" crank counterweight.
Proline was supposed to come out with a 4, 4.25 & 4.5" cranks for the 351W. I haven't found any info about pricing or when they'll be available. They would have to be ground for Chevy con rods.
Proline was supposed to come out with a 4, 4.25 & 4.5" cranks for the 351W. I haven't found any info about pricing or when they'll be available. They would have to be ground for Chevy con rods.
Thread Starter
|
Post Fiend
Joined: Jan 2003
Posts: 10,323
Likes: 2
From: Montana Territory
400 Strokers
Well this forum is the 335 series engines (I hate Windsors) so post it in the windsor lineup. I dont want to pay $758 for custom FI. So I was wondering if ford ever made this engine in either M or C with FI, again I havent ever seen one but if they exist I don't think that $350 is out of line for a used FI intake. So does anybody know if Ford made this intake in FI and if so will all three fit interchangeably? Thanks
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Hotshot
Joined: Oct 2002
Posts: 18,488
Likes: 22
From: The Big, Oregon
400 Strokers
You will never find an M block, or a C block for that matter, with factory EFI. The 351m/400 was discontinued in 82, and the 351c disapeared in 74. One thing you can do, however, is get a 4BBL intake, have an adaptor made, and run CFI/TBI on it. That is the only way you will be able to get EFI on this motor for cheap, but still, you are only talking about 500CFM of airflow.
Lead Driver
Joined: Nov 2000
Posts: 6,623
Likes: 342
From: Albuquerque
400 Strokers
Don't expect higher peak hp from fuel injection. You may get more area under the curve, beter fuel economy and throttle response but not peak power unless it's a race set up.
Also in the last copy of Hot Rod (I think) the had the result of an engine builders contest. A 307 long stroke chevy finished surprisingly high competing against 350ci limit.
You have to take generalities with a grain of salt. Also everyones entitled to their own stupid opinion. :P
Also in the last copy of Hot Rod (I think) the had the result of an engine builders contest. A 307 long stroke chevy finished surprisingly high competing against 350ci limit.
You have to take generalities with a grain of salt. Also everyones entitled to their own stupid opinion. :P
Thread Starter
|
Post Fiend
Joined: Jan 2003
Posts: 10,323
Likes: 2
From: Montana Territory
400 Strokers
Ok no FI for me because I have better things to spend $800 on. Like a Demon. The one I have on a 390 in a '68 kicked das Scheissen out of the edelbrock and holley that were one there before. Ive already got an aluminum 4 bbl intake so all that I need is the carb and I should be set. I don't need to complain about a 400 not making enough power, this one already pulls the pants off of a 460. thanks
New User
Joined: Jan 2003
Posts: 14
Likes: 0
400 Strokers
That's what I'm interesting in doing.Building a 400 that will put the hurt on a 460 at a small block ford weight of 480 lbs or less. I'm trying close in on the cubic inches advantage it has over the 400's 402 cubic inches. 58 CI of displacement difference. The aftermarket support is so great for the 460 it really makes it hard.
"D"
"D"
Thread Starter
|
Post Fiend
Joined: Jan 2003
Posts: 10,323
Likes: 2
From: Montana Territory
400 Strokers
yeah I hear you "D" I think that you can make a lot more power and save a lot of weight if you go with the 400 over the 460 But i hope this doesnt cause a run on the yards. oh well they yards are littered with tons of 351M/400M engines and they both make very respectable power.
Thread
Thread Starter
Forum
Replies
Last Post
PSC19933
335 Series- 5.8/351M, 6.6/400, 351 Cleveland
5
Jun 18, 2003 06:30 PM
