Thread: sbc400 with a 144 blower

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So What Motor Would You Guys Recomend For The 144

350 would work good . but what are you trying to do hp there may be better setup like a blow tru. if you have the blower then build a 350 with good parts some heads that flow good on the ex side and ex mufflers x pipe and a blower cam like 00980 crower

Originally Posted by pat mccarthy

350 would work good . but what are you trying to do hp there may be better setup like a blow tru. if you have the blower then build a 350 with good parts some heads that flow good on the ex side and ex mufflers x pipe and a blower cam like 00980 crower

that is the cam that iam buying the 00980 my heads are going to be ported and polished and gasket matched and iam going with a 3inch exshaust and x-pipe and i have sum 5140 350 rods the hp im tryn to get is sumwhere around 425 to500

sound good get your self a good set of head gaskets like some cometics or fel-pro racing heads gaskets that have a ssfire ring not stockers

Originally Posted by pat mccarthy

sound good get your self a good set of head gaskets like some cometics or fel-pro racing heads gaskets that have a ssfire ring not stockers

thanx 4 the advise that i will get!

The 144 is for looks. Its to small to build much power I believe. Would work on a small small block. Sorry, just my opinion though.

Originally Posted by DADNOVA

The 144 is for looks. Its to small to build much power I believe. Would work on a small small block. Sorry, just my opinion though.

144 is great for street engines. 5-7 PSI boost on anything will help. they give 50-60% more HP at that psi

I thought he is trying to build a race car with the short gears and posi rear end. And a 144 on 400cubic engine is to small. Call Weiand and ask them what to use, they would be the best ones to ask.
When I called them on my 400 engine in my Nova they told me a 144and 177 both are to small to really do anything for racing and to go to a 671.
I will go with the Pro Charger one day as I don't want to go through the hood. And they make more power.

I do agree with you as far as the tuner cars go. We should be aloud to run them over as I am tired of them cutting me off in my truck to get off the freeway when there are miles of road behind me. One day I will find out just how much you can crush a tuner with a semi.

why would u want low comp? i thought the more was better to a point. i have a 355 with a not supercharger but a blower or scoop would the same, low comp. principle take place here to?

Originally Posted by #1firebird

why would u want low comp? i thought the more was better to a point. i have a 355 with a not supercharger but a blower or scoop would the same, low comp. principle take place here to?

The lower the static compression ratio, the more boost you can blow into the motor without it detonating on pump gas. It's pretty simple to build a 8.0:1 static compression ratio motor that will support 8 lbs of boost on pump gas. It's the old "8 for 8" rule. A 10.5:1 motor would be limited to 2 lbs of boost to run on pump gas. Why bother? On the other end of the scale, a 6.5:1 motor could tolerate 14 lbs of boost on pump gas.

supercharger, blower, turbo- same principle applies, the lower the compression the more you can force feed it producing more HP. A scoop to me is just an air induction devise, it doesent force feed the air into the engine. High compression engines are for those who are running engine only with no air forced in but letting the pistons suck the air in as the valve opens as the piston is going down.

ok i understand a little more but the scoop forces the air into the motor at higher speeds of course not at idle. so the lower the comp the more boost you can fit into the cylinders, in a sense the boost makes up for the comp? but y cant you fit any in a high comp motor? the motor will just comp. the boost i thought.

It just doesn't work that way. If you boost a high comp. engine you just blow the heads off along with other damage.
With high a compression engine your compressing the air and fuel let in through the valves due to suction, with a low compression engine and boost weather it be turbo or blower your pushing more air and fuel then what could be sucked in, plus adding compression along the way. That's why a forced fed engine car goes faster then just high compression.
Make sense?
Just for simplicity. If an engine will only hold lets say 15 to 1 compression or it will explode. Normally aspirated 15 to 1 engine takes in 2 oz of fuel and a cup of air into a cylinder compresses it to 15 to 1 then spark explodes the fuel. Pow. Now a 8 to 1 engine is forced fed 5 oz of fuel and 2 1/2 cups of air forcing it to 15 to 1 compression and the spark goes POW due to the extra fuel and air.
Does that help clear it up?

sure does......................

The scoop really doesn't force feed the engine, what it does do and why you see so many hood scoops is it allows cooler air into the engine rather then the heated air from the engine compartment. Cold air makes more HP then hot air. Sample: if you poor hot water into a hotter frying pan you get some steam, if you poor cold water into a hot frying pan you get more steam. The same principle applies to the fuel when it goes into the hot intake. That's also why some guys run the fuel through a cool can filled with ice, to get the fuel as cold as possible. Gas doesn't burn the vapors do, the more vapors the bigger the burn.
The coldest air when driving is at the base of the windshield behind the hood at the angle between the two, for air turbulence cools the air in this area.