so i got the plenum replaced as some of you may know, heres the thing..i notice more power at higher RPMs and really dont notice any difference at lower RPMs. anybody had any different results? lemme know

 

With a badplenum gasket, theintake mostly sucks oil at decceleration from high rpm's. This is when your intake vacuum and oil pressureare the highest. Thehighrpm gain you are perceiving may come from the fact that when you are upperrpmranges, taking your foot out of it and then reapplying the throttle you simply have an a/f mixture instead of an a/f oil mixture.

 

sounds like it makes sense

 

Just geussing really. I know that a faulty plenum gasket sucks oil out of the lifter gallery during deccell, but, when I changed mine, the only thing I noticed was less oil consumption.

 

just seems to me like a lot of work i did for for little result you know

 

If you think about it, it's really more of a repair than a mod. You did a good thing by fixing it. Decarbonizing the combustion chambers would be another good step toward a smoother running more efficient motor as well.

 

mine has stopped pinging on regular gas, and just seems to have more low rpm torque, especially daily driving up and down hills. i didn't have bad oil usage.

 

What's it usuallycost to fix the gasket.

 

if all you do is put on the hughes kit, its not too bad at about $150 shipped.

if you have any other problems, such as water pump or lots of age on your hoses, etc, then you have to decide whether to leave/ignore old parts or replace them while you're in the neighborhood. so if you go completely overboard, like i did, and don't plan ahead and buy from rockauto, then it can really add up.

hughes plenum $146
water pump (new, not rebuild) $63
bypass hose $10
antifreeze, 2 gal $16
hitemp teflon sealer $3 used on the bypass pipe, block drain plugs
oil filter and oil $14
black hitemp rtv $4
rear main seal, felpro, $15
new torque wrench $20
1 1/4 socket $6
htr hose connector $7
timing set Cloyes C-3072, $50
timing gasket kit, felpro $18
oil pan gasket, felpro $28
valve cover gasket, felpro $37 ouch, but they are real nice.
oil pump $35
rad hose, upper $16
rad hose, lower $16
2 molded htr hose, $14 ea ***take your old htr hose and try to match them, or buy at dealer, pass side needs 90* on engine and driver side needs a 90* at firewall and 45* at water pump. cut them to length as needed, i spliced on the 45*
rotor $4
cap $12
good wires $41
tb gasket $2
coolant temp sensor $14
oil press. sensor $35 ouch!
blue thread locker $11 ouch, recommended by hughes, so i used it. locktite would have been fine.

total $607

 

such as...seafoam maybe?