qwiketz

For instance on my ysi blown 383, would it make a difference between a 58mm and a monoblade? One flows 1100 cfm and the other flows 1300 cfm I believe.

Obviously, I'd probably upgrate to a victor efi and lsx throttle body if I were serious about switching but I'm curious what you guys think. My car isn't a max effort type deal; more of a fast street car with some mile racing down the road.

nitrous2fast

iTrader: (2)

lol this is always a funny topic because the flow rating changes with pressure. the 1100 cfm isn't a static number when boost is involved. The typical to see if it is a restriction add a boost gauge in front of the tb and see if it compares to the map sensor reading. if it drops more than 1 psi it could be causing hp loss.

Jazz-LT1

iTrader: (2)

The answer is that it MIGHT, and MIGHT NOT. How much boost, how much flow etc. If it were a turbo application and it was boost dependent it would matter which side of the blades you were taking the boost from. If you are taking it on the manifold side I'd say it probably doesn't matter much (other than small friction loss) since you're taking the reading after all the loses have occurred.

Shownomercy

iTrader: (1)

Compare your comp outlet pressure to what your MAP is telling you. If its bad, well there you go.

Honestly, spin it harder. Thats cheaper and easier than a single plane, elbow, +90mm TB etc.

qwiketz

That's the goal but I need a better cam to rev higher than my current one. I'm already using a 2.75" upper pulley

96capricemgr

iTrader: (1)

A monoblade isn't going to be worth the hassles caused by losing IAC distribution and such.

BIGCAT7274

It's going to depend on the application. But yes there's some power there. How much will depend on a the combination. I am in the process of switching from a lt4/58mm setup to a single plane with a 104mm.

za355tx

iTrader: (108)

This seems to be the consensus. I ran a monoblade on a 550ish FWHP car and had fun getting the thing to idle right. I did get it down just wasn't fun. No telling if it was worth anything extra over a 58mm. AI has said theyve made 5-10 hp more on some stout setups, but they've also made no gains with a monoblade on similar builds. IMO not worth the hassle but if you're patient and have a really good tuner and you're digging for every last horsepower then maybe give it a shot. Resale on monoblades is usually pretty good though if you decide it's too much trouble.