luckythirteen13 said:the thicker the spacer, the higher up in the rpm band it will move power.
18mustangs said:Perhaps my physics is a bit rusty, but doesn't a thicker spacer (which creates slightly longer runners) equal more power down low and shorter runners (like the box type intakes) equal more power in the higer RPM band?
Trefty said:I'm looking at getting a spacer for the purposes of having enough room between the mainfold and my valve covers, so any added power is purely a bonus. Do the kits include everything that is needed?
z9_87 said:Yeah lowers the powerband a tad. They're not exenisive so a couple of extra horses makes it good hp/$ I also need one for Intake to valve cover clearance.
z9_87 said:Well I put the sn95 cobra upper on my car for hood clearance issues(it's shorter) but then it's so low that a little valve looking thing (don't know the name) on the bottom of it puts a hole in my valve cover over time as it wears on it. Needed the extra 1/2", but not the 3" the 86-93cobra/gt-40 gives.
As for the other guy, I'm going to guess he just has tall valve covers. Don't the 351's have much taller valve covers?
luckythirteen13 said:ive been pretty dislexic (sp?) this week so you may be right. i know for a fact that it will move the powerband. i bought mine for the sole purpose of clearing tall valve covers. it came with bolts and gaskets. two of the bolts were too short so i had to go to the local hardware store for a couple of longer ones