Dyno numbers
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Mountain Pass
Joined: Feb 2005
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I dont know, I think stock is what, 8.4-8.6? Im thinking of adding some boost, so I dont want to sacrifice 3 or 4 pounds of boost for 10-20 HP gained by bumping the compression, but I might.
Im really looking for some high perfomance rods for a build so this motor will be capable of revving without throwing a rod.
Im really looking for some high perfomance rods for a build so this motor will be capable of revving without throwing a rod.
Cargo Master
Joined: Feb 2003
Posts: 2,341
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From: Sacramento
Originally Posted by javi2001
Don't put a Donkey in a horse race...
also don't put a Heavy load over a Horse...
I6 are usually slow but strong, V8 are fast...
also don't put a Heavy load over a Horse...
I6 are usually slow but strong, V8 are fast...
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Mountain Pass
Joined: Feb 2005
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Hmm, an engine is nothing but a means of getting air and fuel in, an burning it off, why couldnt it rev, ive heard the problem is the rods, SO im adding stronger rods given I can find them. Im not planning on hardcore racing or anything, just some added power for a show truck. Remember that these rods would be going along with the biggest port and polish job that money can buy, Im talking big. the air will be supplied by dual bored out throttle bodies in a custom intake manifold, with dual cold air intakes feeding them, and the exhaust into a long tube header. It should breathe quite right at any RPM. Im also going to put a nice cam in there with a 290 or 300 degree duration.
Senior User
Joined: Sep 2003
Posts: 310
Likes: 1
Originally Posted by Jefftopgun
Hmm, an engine is nothing but a means of getting air and fuel in, an burning it off, why couldnt it rev, ive heard the problem is the rods, SO im adding stronger rods given I can find them. Im not planning on hardcore racing or anything, just some added power for a show truck. Remember that these rods would be going along with the biggest port and polish job that money can buy, Im talking big. the air will be supplied by dual bored out throttle bodies in a custom intake manifold, with dual cold air intakes feeding them, and the exhaust into a long tube header. It should breathe quite right at any RPM. Im also going to put a nice cam in there with a 290 or 300 degree duration.
With matched perting and flow testing, you might build a screamer. Some time ago, there was a post on Fordsix about an Aussie that built a turbo'd six that put out over 900 HP, IIRC.
I don't remember that RPM number but it was obviously high given the engine. He killed the engine on the stand when the throttle stuck and the engine ran away and threw a rod through the block.
IF you do plan on that agressive of a cam, I'd love to hear some sound clips once it's running.
There are a few drag guys running the six with one of them being the FrenchTownFlyer over at Fordsix.com that are running engines with the stock head and putting out some very nice numbers. FTF has a 300 race only head for his rail and also races a truck with the 300.
I'm sure he could point you in the right direction for rods and may be able to answer other questions about turning the 300 into a higher HP engine.
Regardless, good luck with your build.
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Mountain Pass
Joined: Feb 2005
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Ive heard they are only good for about 5K of revving I dont know what Im doing now, but Id like to get a couple 6K runs in first or second gear.
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Senior User
Joined: Dec 2004
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From: centeral Ohio
I'm not sure but, i've heard the rods are very strong also and have heard that they are good for 6k stock. What i would do is upgrade the fasteners all to arp studs and grind some off of the crank. If you are revving a 300-6 that high you want to make everything as light as possible because, an inline 6 of this size has huge rotating mass. Just my opinion though for all it's worth (isn't much).
Postmaster
Joined: May 2002
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From: Broken Arrow, OK
Originally Posted by Jefftopgun
It should breathe quite right at any RPM.
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Mountain Pass
Joined: Feb 2005
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I dont want peak power at 6K Rpms, but I want it to pull nicely until then. 6K in an inline would be the same as asking a V8 to go to 8400 RPMS (30% more than 6K), I know its high, but they do it with some crazy heads. Remember depending on how well of a beast this thing is NA, I may consider forced induction, something minimal like 2 PSI will probably cover the shortcomings of the heads flowing 8 cylinders worth of air through 6.
Postmaster
Joined: May 2002
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From: Broken Arrow, OK
The rpm really doesn't matter. If you flow 600 cfm through the engine you are going to make about 400 hp, if you flow 300 cfm through the engine you are going to make about 200 hp. The rpm you turn just determines how much torque you will have for a given power output. I think building the 300 with a specific power goal is usually a mistake. A better plan is to build for torque and let the power take care of itself.
Posting Guru
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From: Conyers
My old 300 setup: Clifford intake and carb
Blueracer 270*intake and 282* exhaust cam
2.5" dual exhaust
DS2 dizzy
timing at 13*BTDC on pump gas
C6 tranny
3.55 gears
33" tires
Slight port job to the heads
169hp@4500rpm....I can't find the sheet anywhere but I don't remember the torque.
Blueracer 270*intake and 282* exhaust cam
2.5" dual exhaust
DS2 dizzy
timing at 13*BTDC on pump gas
C6 tranny
3.55 gears
33" tires
Slight port job to the heads
169hp@4500rpm....I can't find the sheet anywhere but I don't remember the torque.
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