300/6 performance?
Posting Guru
Joined: Sep 2004
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P.S. I ended up shelling the 5 speed in that truck and never bothered to get a replacement. Other projects were more pressing. When i took it to the tranny shop they informed me the case had been warped and asked to dyno the motor so i said sure. came out to 620 torque. Dont remember the horse power.
620 tq, stock internals w/t a cam and stock heads with larger valves......someone lied you.
32lbhr injectors + stock engine = not the best idea.
New User
Joined: Jun 2005
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Just so happens i have a 460 that puts out way more than 620 lbs torque. However its a bit more... extreme...
With the 300's its all about matching the intake to the cam to the power band.
Oh and i looked through my engine specs today i was wrong about the stock internals. Forged everything with a higher compression racing piston. the valves were more than a little over sized also. Sorry for any confusion. My price however was correct. But this was six years ago.
With the 300's its all about matching the intake to the cam to the power band.
Oh and i looked through my engine specs today i was wrong about the stock internals. Forged everything with a higher compression racing piston. the valves were more than a little over sized also. Sorry for any confusion. My price however was correct. But this was six years ago.
Postmaster
Joined: May 2002
Posts: 3,241
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From: Broken Arrow, OK
I don't care what you do with the intake and cam, you aren't going to pull 620 ft-lbs out of a 300. Not gonna happen without artificial aspiration and nothing you can say will change that. Forged everything means nothing when the block tends to split in two about the 500 ft-lbs mark. Are you going to come back now and tell us you used an SVO block with a main girdle to keep it alive? You've either been grossly misinformed or you are full of crap. Which is it?
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From: Almost Heaven
I don't care what you do with the intake and cam, you aren't going to pull 620 ft-lbs out of a 300. Not gonna happen without artificial aspiration and nothing you can say will change that. Forged everything means nothing when the block tends to split in two about the 500 ft-lbs mark. Are you going to come back now and tell us you used an SVO block with a main girdle to keep it alive? You've either been grossly misinformed or you are full of crap. Which is it?
Jeez, SS.
Senior User
Joined: Feb 2008
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From: Lincoln, Nebraska
I am surprised. Just when I was about to start a thread on the principle that maybe we are looking too hard to make our "Torque Monsters" more refined. I mean we have been so spellbound with hi performance that maybe we should look at how to detune and try to keep a resectable amount of torque and go for the all out best gas mileage. What say Ye?
Postmaster
Joined: May 2002
Posts: 3,241
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From: Broken Arrow, OK
I am surprised. Just when I was about to start a thread on the principle that maybe we are looking too hard to make our "Torque Monsters" more refined. I mean we have been so spellbound with hi performance that maybe we should look at how to detune and try to keep a resectable amount of torque and go for the all out best gas mileage. What say Ye?
Posting Guru
Joined: Sep 2004
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To kinda put a different perspective out there but say the same thing as SS, for a mpg build, its generally considered ideal to put the peak TQ at or near the rpm you will be using the vehicle most.
Take a look at corvettes, trans ams using the "LS" engines, making nice hp in stock form, yet 30mpg is very much realistic.
On the flip side, take a 5.3/6.0 engine, which is the LS1/2/6's little brother but makes considerable less power, stick it in a "light" s-10 or fbody, and youd probably consider 25mpg to be the norm.
Take a look at corvettes, trans ams using the "LS" engines, making nice hp in stock form, yet 30mpg is very much realistic.
On the flip side, take a 5.3/6.0 engine, which is the LS1/2/6's little brother but makes considerable less power, stick it in a "light" s-10 or fbody, and youd probably consider 25mpg to be the norm.
Elder User
Joined: Oct 2006
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I don't care what you do with the intake and cam, you aren't going to pull 620 ft-lbs out of a 300. Not gonna happen without artificial aspiration and nothing you can say will change that. Forged everything means nothing when the block tends to split in two about the 500 ft-lbs mark. Are you going to come back now and tell us you used an SVO block with a main girdle to keep it alive? You've either been grossly misinformed or you are full of crap. Which is it?
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