Running more than one Phenolic spacer ?

I'v got a one incher on my gt40 and I just about clear everything. I touch my breather on my drivers vc

The only issue I see with 2 is eventually having to worry about more gaskets leaking vacuum. Otherwise, not sure if the spacer removes a lot of HP? My cousin is convinced his 1" spacer on his stock 302 (E303 + GT40 intake) gives him 20hp...

Are you still running the stock PCV valve in the rear of the lower intake? If so the breathers are hurting you, block both of the breather holes in the valve covers or run a closed breather on the passenger side and use that as your oil fill, block the driverside. Run one spacer only if you need it, adding a lot of additonal runner length to the Cobra is not really ideal or needed.
BOSS351...20hp hell see some gain but lowering the heat transfer which they do well, but 20hp would be a HUUUUGE stretch....more like 5-7hp.

You're going to hate those stamped steel valve covers after a few thousand miles when your header flanges are covered in oil. My AFM ones were the worst! But I probably just overtightened the bolts and warped the mounting flanges

Rick 91GT said:

BOSS351...20hp hell see some gain but lowering the heat transfer which they do well, but 20hp would be a HUUUUGE stretch....more like 5-7hp.

Click to expand...

Yeah, he's got some ricettitude for sure. Tells me electric fans = 15hp, underdrive = 15hp, spacer = 20hp, E303 cam = 30hp, plus other things... Basically he has a 400hp 95 Stang, that runs mid 14's on a good day.

He congratulated me on buying electric fans this year for my ride. I didn't do it for "power" I did it to clean up the engine bay. He has no idea why I got a QuarterHorse or larger injectors though... LOL

Typical SN95 owner

Son of a bitch, does that mean the flame stickers I bought aren't worth 4 hp each????