Good Streetabe Power

[273]

Be interesting to see how this one fits into this discussion-

318 build with dyno session

Definitely, whatever the results, should be interesting and useful info.

I also like to see a dyno of junkyard 5.2l magnum stock cam, 215 and a 230 (basically like 5.9l 380hp create), I asked Richard Holdener but he wasn't down but has since mentioned he might play with one.

Seeing the results of similar builds in 302,327,350,360 etc.. even though there all 4" bores I have a hard time believing a 318 will be radically different especially with an overbore.

Here's a 500 hp 307/311 with a 3.905" bore

Long Rod Chevy 307 = Big Power

 

[Swinger 340]

You will never convince me to build a 318. lol
If I'd have known what I know now I wouldn't have junked all of them 360's and 400's in the early 80's, at least a dozen or so. lol

If only we knew. I also tossed a 273 (65'), kept the rockers, shaft and 4 bbl intake. A couple 225's, a couple upper 60's 318's, one 340 that needed a sleave and a couple mid 70's 360's. One 413 (1961). Had no inside storage at the time for them. All complete motors, including intakes and exhaust manifolds. I did sale many parts at a 50% discount, so others could have fun. Wish I still had them now. LOL

 

[Swinger 340]

stop light to stop light streetable, my money is on the stock 375 hp 440 by a mile. lol
oh that's right we're not racing, the 302 and 318 won't be running steep gears and a high stall convertor.
There I go comparing apples to oranges again. lol

Same HP, the 318 being lighter, I would think would have the edge, from streetlight to streetlight. The set-up is also a big factor, not just the HP.

 

[Swinger 340]

I like him a lot too. He just likes to stir the pot. Probably why I like him. lol

Some stir the pot, some hold the pot. You all make a good team. LOL

 

[Swinger 340]

It was a blast to drive!! 3rd gear roll on burnouts, hanging onto the steering wheel as the car changes lanes on its own. Fun times for sure... And comments aplenty

Funny, that you say that. I just took my 69' Dart 340 Swinger out for my monthly drive yesterday and the car also did it's own lane changes. Yes, I always keep both hands on the wheel, unless I'm changing gears. Does not ride like my newer rides, but it does make the drive more interesting.

 

[fishmens67]

Same HP, the 318 being lighter, I would think would have the edge, from streetlight to streetlight. The set-up is also a big factor, not just the HP.

You haven't driven a 440 powered car lately. It would be over before the cars pass the second building. lol
The 440 carries hp and torque at street rpm, setup? how about a set of stickers, will that work?
I assure you the 340 wasn't a big block killer on the street either.

 

[Swinger 340]

You haven't driven a 440 powered car lately. It would be over before the cars pass the second building. lol
The 440 carries hp and torque at street rpm, setup? how about a set of stickers, will that work?
I assure you the 340 wasn't a big block killer on the street either.

Someone did say "same HP", not stock HP. Even at stock, the 340 @ around 325 HP and the 440 @ around 375 HP, it would still be a good light to light run. I drove both and the 340 is a much better controlled motor. You are correct, I have not driven a 440 in over 50 years. That is why I own two 340 vehicles.

 

[fishmens67]

it would still be a good light to light run.

it wouldn't be close.

have not driven a 440 in over 50 years

In my 63 years I've driven a couple 340 and 360 cars, wasn't impressed with either in stock form, a 440 powered a-body is a different beast, B -bodies are no slouch either.
I've built big block powered A-bodies and B-bodies since the late 70's, 1st one was dropping a 383 in my 67 fastback.

I drove both and the 340 is a much better controlled motor.

Please explain.
I'm comparing "streetable horsepower" useable rpm range hp, not a 1/4 mile run

 

[273]

If your goal is to beat every car in your area than a 318 probably ain't the wises choice, if your just looking to have a little fun a 318 or whatever engine might fit your requirements, Where I live there's not a lot of street machines rolling around and or much street racing.

 

[fishmens67]

Where I live there's not a lot of street machines rolling around and or much street racing.

If I was building a cruiser, I would leave it stock with the exception of a nice exhaust system, probably a newer 318 or 360 if I had to start from scratch with an engine, stock that is.
A cruiser to me could be a 63 Dart with a slant 6 push button drive, had one of them as a parts runner, should have never sold it.

 

[33IMP]

Someone did say "same HP", not stock HP. Even at stock, the 340 @ around 325 HP and the 440 @ around 375 HP, it would still be a good light to light run. I drove both and the 340 is a much better controlled motor. You are correct, I have not driven a 440 in over 50 years. That is why I own two 340 vehicles.

I drove a friend's Duster 340, stock, but with headers, many many years ago. I was impressed, it was stout.
My 350 powered 57 that I had at the time would have cleaned his clock. But then mine had the 360hp LT1, and lots more gear. Not really a fair comparison.

 

[273]

375 hp 318 vs 440

The way I see it, torque is mostly a byproduct, yes torque and rpm make power and power is what's needed, unlike power torque can be multiplied by gearing, tire size etc..

If you look at similar hp engines, torque, displacement, rpm and gearing are interconnected, basically a ratios of one another, engine size is roughly gonna fix where the rpm's that powerband has to be made at depending on torque which is heavily tied to cid, which generally lives in a fairly narrow range of torque per cid that with gearing that's necessary to optimize that powerband for the task which basically will put similar torque to the ground and more importantly hp to the ground at any given mph, why I see torque as a byproduct.

So a similar HP 318 and 440 geared optimally should be putting similar hp per mph to the ground same with torque but the thing with street cars most aren't gonna gear properly so what gears people generally run will typically favor the larger engine. aka 440.

 

[Swinger 340]

375 hp 318 vs 440

The way I see it, torque is mostly a byproduct, yes torque and rpm make power and power is what's needed, unlike power torque can be multiplied by gearing, tire size etc..

If you look at similar hp engines, torque, displacement, rpm and gearing are interconnected, basically a ratios of one another, engine size is roughly gonna fix where the rpm's that powerband has to be made at depending on torque which is heavily tied to cid, which generally lives in a fairly narrow range of torque per cid that with gearing that's necessary to optimize that powerband for the task which basically will put similar torque to the ground and more importantly hp to the ground at any given mph, why I see torque as a byproduct.

So a similar HP 318 and 440 geared optimally should be putting similar hp per mph to the ground same with torque but the thing with street cars most aren't gonna gear properly so what gears people generally run will typically favor the larger engine. aka 440.

So you have a 440 with a 323 gear and a 340 with a 391 gear, both with the same HP, who is the winner in a quarter mile? I would think the 340. Top end, the 440 is the champ. I get it!!! I stick to my saying, the lighter motor with the same HP is the winner, if everything else is the same.

 

[273]

So you have a 440 with a 323 gear and a 340 with a 391 gear, both with the same HP, who is the winner in a quarter mile? I would think the 340.

Top end, the 440 is the champ. I get it!!! I stick to my saying, the lighter motor with the same HP is the winner, if everything else is the same.

It's not as simple as that, your engines Hp is it's potential (power to weight)
If both engines have similar powerband curves just at different rpm's then they should have similar capability. As to which one will win a race it all depends on a ton of variables.

 

[85glht]

I Googled the GLH and they made 175 horsepower with the turbo.

That was the Shelby version... stock. My car wasn't the Shelby version, 145HP stock. My car was way beyond stock. Took many years and head gaskets to finally get it to run as good as it did

 

[85glht]

W8 first drive

I drove it on the street does that count?

Yup!!

 

[toolmanmike]

"I drove it on the street"

 

[273]

"I drove it on the street"

Looks like a daily driver to me

 

[toolmanmike]

Looks like a daily driver to me

He has a "pit crew" to prep it to run.

 

[Oldiron440]

Streetabe? WTF

This topic is tiring because in one form or another it gets done over and over again constantly. And setting and duration limit as street able or streetable HP is ridiculous because heeds, displacement, variations in bore and stroke all handle duration differently. All things the same a 360 should have a cam with 10 degrees more duration at .050 than a 318 just because of displacement alone plus it’s all relative to the total drivetrain combination.

 

[toolmanmike]

Streetabe? WTF

This topic is tiring because in one form or another it gets done over and over again constantly. And setting and duration limit as street able or streetable HP is ridiculous because heeds, displacement, variations in bore and stroke all handle duration differently. All things the same a 360 should have a cam with 10 degrees more duration at .050 than a 318 just because of displacement alone plus it’s all relative to the total drivetrain combination.

Exactly!

 

[Swinger 340]

"I drove it on the street"

Insane to drive that car on the street. My son was a 1,300 HP Hellcat (Demon) and I say the same to him.

 

[65 Cuda 340]

FWIW, back in the day, my 65 Barracuda 340, stock except for intake, carb and mild cam would run even with Dad's 62 Dodge convertible with a stock 440. Both 4-speeds and 3.23 gears. Both stock hi-po exhaust manifolds. Both high 13 second cars. The 62 Dodge was 400 lbs heavier, though.

We didn't try top end, but I believe the Barracuda would have been faster, because the 62 Dodge was about as aerodynamic as a brick with a snowplow bolted to the front. I know Dad got smoked on top end by a Super Bird on I-16 outside of Macon, Georgia.

 

[273]

Streetabe? WTF

This topic is tiring because in one form or another it gets done over and over again constantly.

This is for the people that may not know exactly how too, to give them some ideas.

And setting and duration limit as street able or streetable HP is ridiculous because heeds, displacement, variations in bore and stroke all handle duration differently. All things the same a 360 should have a cam with 10 degrees more duration at .050 than a 318 just because of displacement alone plus it’s all relative to the total drivetrain combination.

There's no duration limit, yes the examples at the begin run 224 cams, the point is you can build power without having to cam the crap out of it. Point is not to use X duration.

Look how many ask help to pick a simple RV cam or build 200-400 hp out of X engine, not like everyone knows this stuff.

 

[273]

All things the same a 360 should have a cam with 10 degrees more duration at .050 than a 318 just because of displacement alone plus it’s all relative to the total drivetrain combination.

Curious, So if a 360 over a 318 allows you run 10 more degrees with same idle, vacuum etc.. is that the same for ever 42 cid bigger ? 402, 444, 486, 528, 570

so a 280 @ 0.050" in a 570 idles like a 220 in a 318 and a 200 in a 234 cid engine ? so a 280 is an RV cam for a 572 ? Or is it not so linear ?