What is better for a 305 G92

Slp Runners Siamesed.
Length- 6.625
Diameter- 1.600


TPIS Runners
Length- 7.625
Diameter- 1.660

Stock Runners
Length- 7.250
Diameter- 1.470

Please I just had one of my friends check out SLP for the order @ an auto parts store. I dont care about the price but from what i just read the stock runners are worth more than slps. Thank you

 

Stock runners.

 

SLP

 

stick with stock runners. make a custom plenum if anything.

 

I dont know I hear different stuff everywhere I go I'm kinda looking for results and someone with a profound knowledge of TPI. I know that the longer the runners, the better the torque curve and greater the torque. And as anyone who is into cars knows that a greater cfm rate generally equals more power unless you over do it.

So my point is even though the SLP's are cheaper and come highly recommended would the TPIS runners be better? More flow, longer runner though not siamesed.

My final intent for the tpi is to eventually change the lower intake manifold probably again look into tpis, because they have the highest flow rate i have seen for a true tpi system, the manifold is port matched, even though im not a big fan of edelbrock. Plus the polished aluminum will always get me over natural cast. Then, have the plenum polished and ported and have all of the interior blockages air brushed away. 52mm Holley Throttlebody and I haven't seen anything for fuel rails. If anyone can show me the pros and cons to my current plans please explain.

I do not want to lose the cars low end torque but I would like to definitely increase high end horsepower. I am definitely still learning and know very little but I do believe this could add at least fifty horse if not give it the potential for it, then I can finish the exhaust and port the cylinder heads. Thank you for your time.

 

Mcdamit:

Your plan above is just fine, EXCEPT for the 52mm TB. A 52mm TB will get you nothing on a 305. Save the money on the 52 TB, keep the stock TB and spend the money on a good cam. You are guaranteed (sp) to get much more gain from a cam than a 52mm TB.

My 2 cents worth.

 

BTW, IIRC, TPIS runners are from ASM.