My 300 has the factory log manifold and a two and a quarter straight pipe on it with a turndown at the rear axle. It sounds gnarly and mean at low RPMs, especially when cold, with a nice crackle to it. It sounds less good when warm; mostly just low frequency noise, and it drones horribly. I suppose putting the tailpipe all the way to the edge of the bed would help. The log manifold does give it an uneven V8-kind of sound. I've pushed that motor over 4000RPM with this setup, and it just gets quieter and quieter as the revs climb.

I'm upgrading to EFI manifolds, Walker pipe, 2.5" Catco cat & 2.5" Dynomax single catback. Not sure what it's gonna sound like yet; I mainly just want it to not drone, and I already have the parts available from miscellaneous other projects, so that's how it's gonna be. :-)

 

I would not listen to those people who say they "can" rev up 6500 rpm... Thats Impossible if you do that, you'll blow the motor, and the piston will come out the block.

I just shift mines at 2500, and 3000 rpm at the "most", 4000 is to much for stock IMO.

For as far exhuast is I have no cats on my f150 and what it all comes down to is a flowmaster 40 series and single out from the side. It has a rumble to it when I start it. It isn't going to be any louder without making it sound like ****. "Oh yeah my truck sound bad ***, and I got straight pipe out the back". IMO that makes the exhuast sound "poppY" "pop" "pop" "pop" no tone. I know should of not got rid of one of my cat in the front the "y" one. I got rid of it the nice tone went away and more "pop!". See you want a good sounding exhuast, you want a nice tone exhuast not no "poppY exhuast"

Also IMO v8 our louder because more explosions in the engine. Think about it... I told some people about it and they said "oh, no bra it just in a diffrent tone" Yeah Right! more like a lower volume tone. I don't know about some of you but I like tone, I don't like "pop!"

 

Well, in my 95 I've touched the 4K mark, but other than that, It would have to be seriously built (balanced crank, rods, a good set of pistons, and definatly have some head work done to make it breathe) to accomplish 6500, for sure.

I'm planning on getting a good set of long tube headers from clifford, with a Y pipe and a 70 series flowmaster (to give it a really deep sound). This should help performance and make it sound pretty good.

 

i like the tractor sound

 

No doubt bobscot000, I bet it would sound mean as hell through that 7.3 diesel, I mainly did it for the look and was just hoping it would sound good, I lucked up and got both imo, but diesel would be great.

 

Mtthwvn73, I sold that pickup (like an idiot) several years ago so forgive me for my lack of specifics on the engine. I'll give it a shot though...

Block:

Sonic tested and pressure checked
Bored .060 over

Rotating Assembly:

Keith Black hypercruetic (sp?) 351 Windsor pistons with valve reliefs gave 10.5:1 compression
Stock crank and rods were shot peened, polished, balanced and matched to the flywheel and harmonic damper
Stock flywheel was lightened
Rings were chrome moly and took FOREVER to break in

Head:

Decked .030 to assist with compression
Machined for ARP screw in rocker arm studs (must have for this RPM!)
Valves big enough to almost touch eachother... I want to say they were for a Chevy 350 application. Memory is failing me here
Full port and polish / port matched to intake and header

Valvetrain:

Crane Gold Race roller rockers 1.7 ratio I believe $$$$
Crane triple coil valve springs, all exhaust spring to get rid of the stupid spacer on the top of the intake spring.
Clifford performance keepers valve locks etc etc...
Clifford performance push rods
Crane lifters
Crower 292 cam. I don't remember the specific duration but the advertised powerband was from 3000-6500 if i'm not mistaken. It was big enough to necessitate a vacuum can under the hood to assist with the power brakes. With out the can ... no brakes! This engine didn't make enough vacuum to run them

Induction:

Offenhauser C series open plenum aluminum intake
Edelbrock 500 CFM 4V with mechanical secondaries, choke flap and bar removed.
1" Edelbrock phenolic spacer

Exhaust:

Clifford long tube dual collector header (NEVER SEALED WELL!)
X pipe after the collectors
Dual in / dual out Flowmaster 40
Dual side exhaust infront of the passenger rear tire, edges of the chrome exhaust tips flush with the step on the stepside bed. (so beautiful!)

Ignition:

MSD 6AL box (POS)
MSD 8.5mm? wires
MSD Blaster 2F coil
7000rpm rev limiter module in the box

That's just about all folks. And no I didn't take it to a dyno lol... I built this truck when I was in highschool to beat a punk with an 80's shortbed regular cab Chevy with a built to the hilt 454. He was your typical Ford basher so I decided i'd beat him with a six cylinder to really rub it in. His friends were around to watch the events unfold and I was the lone ranger hehehe. He didn't even have a chance against my light weight pick up. We'd line up almost everyday and he get beat every day all day long. Punk.

Almost forgot... To the person that said not to listen to anyone that say they can rev their 300 to 6500 rpm... you're absolutely correct. It's total BS with a stock 300. Actually a stock 300 doesn't breathe enough to even rev high enough to throw a rod as you described. I'd say about 4200 on a dead stock 1V carbed motor is about as high as it'll go in gear... and about 4500 for an EFI truck with it in gear. In neutral... it'll probably hit the fuel cut off at 5000-5250ish? The carbureted 1V truck won't even rev that high so don't worry about it.

Sorry for not clarifying that my 300 was built for 6500, because on a stock motor that is just foolish to make a claim like that.

 

It's the uneven firing order that gives the V8 its unique sound. It's like having two 4-cylinder engines, but because they are joined at 90 degrees, they are not syncronized. The unevenness is because part of the firing order alternates between cylinder banks and part doesn't.

For example (351 V8): 1,3,7,2,6,5,4,8 Nnotice that the 1,3 and 6,5 are where it fires twice in a row on same cylinder bank. The rest alternate.

The 302 and 460 are 1,5,4,2,6,3,7,8. Different firing order, but 4,2 and 7,8 are on same banks. Rest alternate.

 

Man, that's alot of work/money to be putting into a straight 6. I didn't know you could use 351 pistons. That makes looking for pistons a whole lot easier! I'd like to fix mine up really nice, but I'd like to keep EFI, which is going to hinder my choices. I don't want that much compression, but about 9.0 should be good for a DD.

Thanks for the Info CJsteak, I'd like to know how much power this thing was actually putting out. Anyone have a Desktop Dyno???

Matt

 

I don't see how mufflers can cause "pop" in the exhaust. Maybe someone can explain?

The "pop" is fuel burning in the exhaust because the mixture is too rich when the throttle plates shut during deceleration, right? The AIR pump is diverted from the cat to the exhaust manifold to help alleviate this condition. How does muffler choice affect that?

Option B would be that timing is retarded. Again, I don't get how that is a function of the mufflers installed on the vehicle.

 

Yeah, my bronco had NO exhaust...the only thing that was left of it was the Catalytic converter, and the guts were beat out by a sleever bar. I would rev that thing WAY past what I thought was the limit of that motor (I didn't really care about it, I was getting ready to pull the motor which I'm in the process of doing right now). I never heard any popping sounds comming out of the exhaust. It might had been because it was a 351, too...I don't know.

matt

 

. IMO I say bs 6500 rpm on 300 inline 6? Unless someone can prove me wrong by showing a video. Shoot, it'll hit 5500 and then piston will go fly to the moon.

Even in a 302 6500 is to much for stock, I don't know about some of yall but go ahead and rev it up at 6500 rpm, don't be surprised that the engine blows.

 

evilperson86u,

Fine call BS, call me a liar. I've written up the engine build. Do your homework on the components listed above. BTW the main cap studs and the connecting rod studs were all ARP. Top of the line.

If Evan, aka 82F100SWB is still roaming around this site, he can vouch for this engine. He helped me with some more of the technical aspects of the build, years before you were a member on this board. Actually Evan may even remember some of the other guys that assisted with the engine from this board as well as the guy that I purchased the cam from... also from this board. Evan also heard my engine rev over the phone when I was trying to pinpoint a miss at 6000.

After all this, who cares, too much effort to please you.

My race engine exploded at 4k and i'm a liar. All six pistons came flying out of the block and one hit me in the head and another killed my neighbor 5 miles away. I have absolutely no clue as to of what i'm talking about and the 4500 bucks I spent on the engine to make it reliable at 6500 was all a big lie too. I tightened down the connecting rod caps with 99 cent pliars and I left every other rocker off to save weight.

Almost forgot... I drove this thing not only without a hood but also without a valve cover to keep the engine heat to a minimum. I also shifted the 4 speed that was in it with a flat head screwdriver because I didn't know how to put the shifter back in it when I removed it from the truck.

If you play the Earnhardt crash in super slow motion you'll see my 300 powered F100 floored at a glorious 3500rpm nudge him into the wall as I took a win. Be sure to watch the victory slide I did.

My truck won the Baja 1000 5 times too.

It also goes back in time. One time I went back thousands of years ago and power braked it so much the smoke blocked out the sun and caused the Ice Age to come about.

My 300 killed dinosaurs.

I'm done with this thread.

Have a goodnight chief.

 

http://www.inliners.org/race/race11.html

His blew at 4k too.

 

cjsteak two words "prove it" talk is cheap anyone can talk. Show me a video of your truck reving 6500 rpm thats stock 300 Inline 6 .

Good, so go ahead rev it up 6500 rpm .

And if you prove that I'm wrong It'll take it all back ,man. I mean, all of it.....

 

Can you not read? His 300 is far from stock. The list is as long as my arm of the mods he's put into it.

Stop poking the beast. He may just eat your brains. O_o