"SteetMaster 390" intake manifold

[matt]

The best price for the streetmaster i found was from dscmotorsport and they were asking $170. I paid about $280 for the perfomer new but dsc also has them used for 160. So it would be a pretty even trade as long as the streetmaster is in great shape because this peformer is like new. Please check it over for the obvious stipped holes and stuff please. Check out this web site http://dscmotorsports.com/.
Just in case your interested here are what the factory intakes are. c5ae-9425c 6e31 and c4se-9425a 4b4 don't know if they would be good for what your looking for but there probably someone on here that can tell you all about them.

[Dragon]

DSC has not updated the website I bought that StreetMaster over a month ago.

[Alvin in AZ]

DSC has not updated the website I bought that StreetMaster over a month ago.

LOL :)
You recognize it? :)

Matt, email sent. :)

Read over and over how the Performer 2105 performs like a plain-Jane stock intake,
just lighter is all. That sound right to you guys?

Alvin in AZ

[Dragon]

Yes That sounds all right.

The RPM is more like a hot factory intake. If you have the time to get inside and grind either then they really wake up. The Victor is more like a true after market toy. Every buddy did it. Low end just nearly factory.

You would think that a 2-4v would work great since the carbs are up higher and have more of a straight shot into the heads. Not true the manifold people would make ones that did not work with out a lot of work. Offy is gone. Except for the Dual port for the I6 fords nothing I bought from them nothing works with out tons of work.

[68muscletruck]

I'm building my 390 right now as we speak... a friend just built a 428, i've got the performer 390 manifold from Edelbrock and he's got the RPM performer... aside from the rpm performer being a higher rise and having bigger runners, the ports that match up to the heads were actually pretty close in size, so as mentioned, they run great over a stock cast iron intake, but when you take the time to match port them and do some grinding to open up the ports then they really wake up and scream... i ran mine just as it came from checker before we tore it down and it would run up to 5500 as mentioned, so i can only imagine how much smoother thats going to feel with bigger ports on the end of em. as to make up for the difference in rise, we're just gonna get a spacer for mine, so if you have time to grind it out, trace the ports from the gasket out on the intake and grind away the sides and roof but leave the floor alone... if you don't have teh time you'll still notice a difference just plopping it on there but will wish you'd taken the time to grind it

[Alvin in AZ]

I'm a tinkering fool! :)
Of course I can't leave well enough alone! LOL :)

Port matching is in the works whether it's a fancy aluminum one or a rusty
old iron two barrel. :)

I don't care what it is I'm trying to "improve" ...tinkering is tinkering! LOL :)

When it comes to messing with vehicles I've always felt like a cross between
a do it yourself-er (oil, filter and spark plug changer) and a "racer", but for
sure, don't fit worth anything in either category.

Thanks for the help you guys! :)

Alvin in AZ

[matt]

e-mail returned.


I never ran the factory intakes so i can't compare them to the performer but for what your describing you won't go wrong with the performer
it was a complete tork monster in my truck. The truck ran out of gas around 4800 rpm but the cam was very conservitive also.

[68muscletruck]

considering you're after a really tight torque/power combo down low in rpms... are you just running a stock cam or have you considered doing something aftermarket for it? cause the cam really changes the whole heartbeat of the motor

[Alvin in AZ]

considering you're after a really tight torque/power combo down low in rpms...
...have you considered doing something aftermarket for it?
cause the cam really changes the whole heartbeat of the motor

An aftermarket cam for sure! :)
Got any suggestions? :)

Right now I've got a '75 F150 + T18 360FE 2100 2v with a
252/252 Comp Cam + "opened up Y" 2+1/2" straight pipe

I know from stroking motorcycle and old Bug engines that
when letting off the gas the stroked engine provides much
greater braking action. :) Does more going the other way
too tho! LOL :)

Alvin in AZ

[matt]

If you are really for low end torque the cam you have picked or
Manufacturer's Part Number 06501LK
Part Type Camshaft and Lifter Kits
Product Line Lunati High Efficiency Cam and Lifter Kits
Summit Racing Part Number LUN-06501LK
Cam Style Hydraulic flat tappet
Basic Operating RPM Range 800-4,500
Intake Duration at 050 inch Lift 201
Exhaust Duration at 050 inch Lift 201



But i ran a cam simalar to these and was a little disapointed just make sure this is excactly what you want. And you will be satsfied. One thing i over looked was compresion. When running cams with really low intake duration it increases cylinder pressure and detination under loads can occurr.

[Dragon]

Sorry but cam simulators is like plotting bullet ballistics to a 1000 yard target by a computer. Too many minor variables. Everytime I used a simulator the performance was way off in reality.

If you want massive low end torque that cuts off at 5200 rpm but starts at 1200 rpm get a Baja Beast cam from Crower.com. Or the more powerful same rpm PowerBeast cam.

[matt]

Sorry but i never said anything about cam simulators
But crower does have a nice line of cams for the fe.

[Dragon]

Similar sorry. Crower is in the winning circle more often than not.

[68muscletruck]

I"m putting the Mutha THUMPR from COMP in my 390 this week, going off what my machine shop has said about dyno results with this cam in other fe's and other motors, they said they thought it was gonna be all sound and no power, but after reviewing the dyno charts, they said they haven't seen many cams with such a straight torque curve... so i'm hopin for the best with that but my buddy with a 72 Gran Torino has a truck and a ranchero too, 2 clevelands and an fe and he said he's had good experience with comp, but everything he expected and more has always come from Crower