The Wood Hauler

Rhino, your mechanical genius is only surpassed by your extensive ms paint talent, you should pursue a carrer being one of those guys who draw the lines on the tv during football games.

I would say something about the build, but Ryan pretty much has it covered, so I'll just go on doing what I do, which is shell out precious cash.

onebadrubi

HAHAHAHAH ROTFLMAO!!!!!!!!! Anybody else get dizzy tracing the lines with your eyes?

Snake Eater

What kind of power difference do you get with those intakes? Any gain in TQ/HP down low like for towing?

The Wood Hauler

I think its power range is something like 3000-7000 rpms, so I wouldn't say its good for low end power, but we're looking at (hopefully) a 45-75 peak hp increase.

1slow01Z71

iTrader: (36)

From the dyno charts I have seen posted you will loose hp down low but gain alot starting at about 5K.

Snake Eater

All that money and goodies, and your running IRON heads!!!!!!!!! Whats up with that?

Rhino79

iTrader: (7)

Haha, he was on a budget when assembling the 408, and it had the iron heads with the motor, so we went with them temporaily, it's about to get some aluminum heads though. As far as the low end power, I doubt it will be much different from 3000-4500 or so, but the truck has a 4000 stall so thats not a big issue. What was hurting it bad was not being able to use the entire rpm range, and this setup should definetly solve that problem. Looking for about a 6700 shift point or so, the sam should peak around 6300 or 6400 so maybe shift between 6500 and 6700.

TurboGibbs

iTrader: (6)

Keep in mind that it is an intake built for a carburetor and the reason for the 3000+ power band is that at lower rpms and a large runner, open plenum intake a carbureted engine will loose low end power due to the lack of velocity and the fuel actually falling out of the air. With a MPI system you don't have that problem when the fuel is being sprayed at high psi on the back of the intake vlave. You will see more low end tq with fuel inj on the same intake vs a carb.

Rhino79

iTrader: (7)

Thats exactly what the guys at Edelbrock to me! The rpm range of 3000-7000 is not the rating for a EFI engine.

Rhino79

iTrader: (7)

Well tonight I messed with it some more and I found the mystery whistle......it's coming from the pcv valve. I don't know if it's because of the way it is tee'd with the vent on the other valve cover or what, but it whistled when above idle. Well I pulled the pcv out of the valve cover an the whistle instantly stopped, and I left it out for a bit running the throttle from under the hood, and could not get it to do it again. So I put the PCV back in and within a few seconds, the whistle was back. I might try a different pcv valve or just put a breather in it, but that is the problem. I checked all over for vaccum leaks, none found using starting fluid.