400hp
Freshman User
Joined: Sep 2001
Posts: 31
Likes: 0
400hp
Ok guys, I want to know everyones ideas on how to get 400hp 500 ft/lbs torque out of a straight six. Lets just say money is no object. It will be a fuel injected 1987 300. With the HD Engine. Gas Mileage dont mean anything. Any help would be appreciated.
Senior User
Joined: Jul 2001
Posts: 470
Likes: 0
400hp
Boost... Lots of it.
Its kinda tough to get that kinda HP N/A on these old motors, so boost is just about the only wayto go...
Figure a 260's cam with large valves, drop the compression (perhaps my opening up the head vs low CH pistons so you can get larger valves in there) a single turbo matched to your engine should do it. The EFI intake should flow more than enough air, huge injectors (36lb/hr injectors bumped up on the pressure to flow 38 or more), programmable EFI (SDS or perhaps Electromotive) and a completely prepped engine.
-=Whittey=-
Its kinda tough to get that kinda HP N/A on these old motors, so boost is just about the only wayto go...
Figure a 260's cam with large valves, drop the compression (perhaps my opening up the head vs low CH pistons so you can get larger valves in there) a single turbo matched to your engine should do it. The EFI intake should flow more than enough air, huge injectors (36lb/hr injectors bumped up on the pressure to flow 38 or more), programmable EFI (SDS or perhaps Electromotive) and a completely prepped engine.
-=Whittey=-
Elder User
Joined: Nov 1999
Posts: 780
Likes: 1
400hp
150-lb./hr. injectors?
Aeromotive fuel system?
Massive intercooler?
Custom, better-flowing larger-CFM intake (Cliffy/Offy 4 bbl.)mated to a TO-4?
Cliffy 3/8" stroker setup?
And let's not forget...the Bottle!
Eddie
Aeromotive fuel system?
Massive intercooler?
Custom, better-flowing larger-CFM intake (Cliffy/Offy 4 bbl.)mated to a TO-4?
Cliffy 3/8" stroker setup?
And let's not forget...the Bottle!
Eddie
Freshman User
Joined: Apr 2001
Posts: 49
Likes: 0
400hp
Just use a NOS fogger system, I am sure you could get 600+ horsepower out of one, if you get a good set of head gaskets. :-)
78 F150 400m, c6, holley carb and intake, cam, and some other goodies
87 F150 460, c6, 2800 stall converter, eagle hbeam's, eldelbrock intake carb, crane cam sat spec., balanced and blue printed, 10.5-1 compression, heads ported and polished, full msd setup, everything but roller, aluminum heads, and laughing gas(as for now).
55 F100 stock 292 3 speed (as of right now..heh)
97 Exped stock
[a href="http://projectbigred.150m.com/"]Project Big Red[/a]
78 F150 400m, c6, holley carb and intake, cam, and some other goodies
87 F150 460, c6, 2800 stall converter, eagle hbeam's, eldelbrock intake carb, crane cam sat spec., balanced and blue printed, 10.5-1 compression, heads ported and polished, full msd setup, everything but roller, aluminum heads, and laughing gas(as for now).
55 F100 stock 292 3 speed (as of right now..heh)
97 Exped stock
[a href="http://projectbigred.150m.com/"]Project Big Red[/a]
Posting Guru
Joined: Dec 1999
Posts: 1,903
Likes: 2
From: Copley, OH
400hp
400HP from a 300? Eddie's right you'll need a power adder or two to get there. A turboed engine is going to have a BSFC of about .55, so you'll need 220 lbs of fuel per hour. At a 90% duty cycle you need 42#/hr. injectors. You'll also need 155 LPH fuel pump(s)and would probably be better off with 190. Forget about the EEC-IV, you're looking at a tunable aftermarket EFI system
I don't have a clue how you're going to get an engine strong enough and thirsty enough to ingest all that stuff, but keep us posted
I don't have a clue how you're going to get an engine strong enough and thirsty enough to ingest all that stuff, but keep us posted
Freshman User
Joined: Sep 2001
Posts: 31
Likes: 0
400hp
I really like the light weight of the inline 6 with all it's torque. I can go witha 460 but it weighs more. I will have to look into it more.
Trending Topics
Senior User
Joined: Jul 2001
Posts: 470
Likes: 0
400hp
Ahh, I was assuming .5 BSFC for injector sizing.
http://www.turbofast.com.au/turbomap.html
T04E "50" trim
5000rpm, 20psi, 80% VE (easily possible with head mods) 70% compressor efficiency, 30c day, air-water intercooler with 30c water and 50% effeciency (low for an air-water).... At 6000 you'd be real inefficient with that particular turbo, but up to 5000 it looks pretty good.
Actually, with a T61 your lookin at a hp/torque of 541 @ 5252rpm.... now this is just airflow, not actual horsepower. You still need to deal with a cam to get there. A stock cam probably will limit you to less than optimum at 5000rpm. Something like a warm street cam should do well in those higher RPMs with forced induction.
-=Whittey=-
http://www.turbofast.com.au/turbomap.html
T04E "50" trim
5000rpm, 20psi, 80% VE (easily possible with head mods) 70% compressor efficiency, 30c day, air-water intercooler with 30c water and 50% effeciency (low for an air-water).... At 6000 you'd be real inefficient with that particular turbo, but up to 5000 it looks pretty good.
Actually, with a T61 your lookin at a hp/torque of 541 @ 5252rpm.... now this is just airflow, not actual horsepower. You still need to deal with a cam to get there. A stock cam probably will limit you to less than optimum at 5000rpm. Something like a warm street cam should do well in those higher RPMs with forced induction.
-=Whittey=-
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