F1X.EXTEVAN

Hello short run down dart 427 , F1X pretty big pulley 17lbs , 1060 to the tire & 6800 ,i understand peak horespower doesn't mean poo when your out racing its getting shifted relatively quick , and it’s consistently coming short of my expectations , its loosing to PD blower cars like there no tomorrow off the hit they jump out and the car does hit but once i shift at 7000 the car just gets so far out of power whatever car i’m racing walks away like nothing , im wondering would putting spray on the thing help or just spin the mf harder , cars rated to handle 1300 , but , i feel like this 1050 is really 850 until im at 6000+ , the power band is just so linear it’s a gift and a curse , it was hard enough to put the 1050 down so turning it up is not small task , just wondering how other Centrical cars get out so hard on the hit

winters97gt

Overspin the heck out of a small blower. Took down a few F1-A/C cars with my Novi 1500 12-15 years ago.

Al_Scrap

Pulley for 30lbs and bleed for 17lbs can help

thehulk

Bigger stall converter will help if Auto.

We're also going to be experimenting with a small pully & Wastegate to get the most out of it.

Stay tuned.

jenavet

yes..you left out if its auto or stick?

rykerwolf

The post pretty much says it’s stick, and for the op what was said above is a good idea. Pulley for more and find a way to lose what’s not needed, moving the targeted peak boost lower in the rpm range. There’s a few “boost controllers” on the market for blower cars. Note this will be inefficient on the blowers part and lead to higher iats.

The “right” answer is to get a smaller blower, the f1x is overkill for 1050ish

thehulk

Yeah you know I didn't even register he's got the F1X, good catch. He needs to trade it in for an F1A94.

PSSSSSHC6

Pulley way down! F1X is a big unit. You will need to **** it off to make it happy or drop down to a smaller unit.

F1X.EXTEVAN

it is stick it’s a Z06 , T56 car taking off in second from a roll , about 4600 rpm at 60 mph , which is around 750 ish so say a pd blower car off the hit is going to automatically jump out on you and your playing catch up w a stick car , not ideal , i just need the power to come on earlier , i feel like the F1x is too big in all honesty i had got tore up by a YSI car the other day granted he made about 100 more wheel but the instant hit was pretty deciding , i wouldn’t mind having the 1150ish on top just to get the midrange i need , option 2 was spray it off the hit and keep the same peak numbers just have the midrange be able to eat w a progressive shot that dies off up top . obviously a pulley would be a lot cheaper then a whole nitrous outlet system

Al_Scrap

I have a YSI with a TR6060 and with a third gear pull I did a 4.14 60-130 in the same gear.

I30

Pully down and add timing on the hit.

F1X.EXTEVAN

i believe it’s like 25 degrees of the hit it’s just really the power band , it leaves at only 700 and ramps up to almost 1100 just such a big variance i think spinning it harder will just have to be the only choice for low range , i’ll figure out how to bleed it out up top probably take some timing out

c5mtl

simple easy fix nos

FourG63 97GST

You either put it on the bottle or overspin and wastegate the coldside. and imitate the powerband you want

gsx1300rrr

That's moving!!

Al_Scrap

Thanks, probably have a 3.99 in it with some nitrous to light up the low rpm. I work on this, its a time on the street btw.

JetstreamGS

Too much blower you'd be better suited with a F-1A

jayyyw

Do you have a dyno graph? Putting a smaller pulley might have the opposite affect that you want. It could induce traction issues. Personally, I would raise the engine rev limiter to ~7500rpm. This will make more power up top and then fall back into a better spot on the shift that will help you keep accelerating. As for the hit, step down the pulley in stages to see which gives you the best traction from the hit and does not go over the MAX impeller speed your head unit is rated for, with the increased engine rev limit. Either way, you're going to need a retune. You can probably put on the smallest pulley you think you're going to use and tune on that one. Then you can step up in sizes and not have to retune the car.

Hope that's coherent, lol. It'll likely never be ideal without a ton of work arounds. You just have too much head unit for what you are trying to do.

Is this the black c6z from central texas?

F1X.EXTEVAN

yes this is the black one from Austin , the valve train is all set up to handle it the limiter would be not a bad start just to spin it a little higher , my tuner had stopped at 6800 on the dyno and no matter what i spin it till about 7050 rpm , the graph is as follows , it does grab 2nd at 60 on a 17 Et street R , but it could be close to its limit on traction , but ofc even with a bigger pulley i can dummy down timing to get it to grab then put it back in up top , a lot of ways to approach it but i do agree a F1X is overkill for my low 12XX wheel i’m stopping at so the motor lives.

jayyyw

7500rpm shifts will get you an extra 3-400rpm on the shift drop. It'll help some