Pulley combo with ported eaton and long tubes

[dmjarosz]

I have a Steiegemeier Stage 6 ported Eaton blower and Stainless Works long tube headers. I know the headers are worth 40-50 rwhp but Im not sure what the blower porting is worth. What lower pulley is good to run with an upper that measures around 3.6"? I think thats the stock upper? I'll be running this on a stock block.

[martyo]

No matter what you will be at 425 rwhp if you are find of your current motor.

[dmjarosz]

I am very fond of my current motor, especially in its assembled state. Whatever happened to the less than 450 rwhp rule?

[cer0413]

No matter what you will be at 425 rwhp if you are find of your current motor.
Don't mean to derail the ops thread but can you give me an estimated rwhp# with a 3.6 pulley, no headers and p1sc?

[RubberCtyRauder]

I had 411 Rwhp with 3.6 pulley on vortech , no inter cooler , stock motor. I believe member Pat is around 425 with same set up plus he has a nitrous shot available above that. Intercooler should add 40-50. But remember centri builds at higher rpm, less at lower rpm. Intercooler will help keep iat lower as it gets warm. IAT above 150 and timing starts to be pulled .

[cer0413]

I had 411 Rwhp with 3.6 pulley on vortech , no inter cooler , stock motor. I believe member Pat is around 425 with same set up plus he has a nitrous shot available above that. Intercooler should add 40-50. But remember centri builds at higher rpm, less at lower rpm. Intercooler will help keep iat lower as it gets warm. IAT above 150 and timing starts to be pulled .
Thanks man.

[Zack]

You can make 500 on a stock engine as long as the AF is fat and it doesn't ping

[65fastback2+2]

headers are not even close to worth 40-50 rwhp....more like 10ish.

id run a 4lb lower and if you've done a terminator swap, make sure to run a underdrive alternator pulley.

[RubberCtyRauder]

Headers on a marauder (long tubes) are worth 25 and up hp

[dmjarosz]

Nothing is installed yet. One of the last few things I need to buy for the Eaton swap is the lower pulley and belt. Id like to get the sizing right the first time and not have to switch out pulley to get the power I want. Just under 450 is where I'd like to be.
My initial guess was a +2lb lower.

[rauder88]

headers are not even close to worth 40-50 rwhp....more like 10ish.

Even on an N/A Marauder long tubes are worth 25 rwhp, more on FI cars. These numbers are dyno proven, time and time again.

[dmjarosz]

That's why I'm nervous about going too big a pulley right off the bat. And who knows what the ported blower will do...

[RubberCtyRauder]

what injectors and fuel pump do you have

[Vortech347]

Stock lower and 2.76 is a good combination with ported blowers. Its what I run on my Terminator. But with a stock higher comp Marauder engine? **** will go boom.

I'd suggest like a 3.2.

[dmjarosz]

what injectors and fuel pump do you have

Stock Cobra 39# injectors

Aeromotive 340 Stealth p/n 11142 fuel pump with upgraded FPDM and 12ga wire from the distribution box to the inertia switch to the fpdm. I still need to figure out wiring from the fpdm to the pump itself, including going thru the fuel hat.

[dmjarosz]

Stock lower and 2.76 is a good combination with ported blowers. Its what I run on my Terminator. But with a stock higher comp Marauder engine? **** will go boom.

I'd suggest like a 3.2.

Id like to keep the stock 3.6 upper if possible. Saves on having to swap parts. Im thinking I can accomplish this just by changing lowers. The only issue I know of with the stock upper is it can rub on the hood liner but that can be easily remedied. Or is there something Im missing?

[RubberCtyRauder]

I was just checking to make sure injectors or fuel pump were not undersized for the job. I have trilogy so not sure of eaton pulleys. most end up around 420-435 rwhp from what ive seen.