I'm getting ready to drop close to $2000 on a set of Edelbrock heads,
head bolts and rocker bolts/studs , gaskets etc...
my question is,
can i use my current Edelbrock street master intake manifold with these heads
next year i can afford/justify dropping another $450 on a performer rpm manifold
i just put about $1300 into my 9" rear end, and budget is getting tight..
Ross (my427stang) hopefully you see this...Thx..
With your combo, the Streetmaster is arguable just as good as the RPM. They are within a couple of HP and equiv avg torque on a 400 hp engine, I see no reason to change at all. In fact if you follow Edelbrock's directions to port, the Streetmaster generally wins. You can find it on the internet, it used to come with the manifold. FYI it is a med riser intake and it matches the RPM heads well, just a bit smaller at port opening.
The Streetmaster and Holley Street Dominators are great manifolds. I really like those small single plane intakes. As far as Edelbrock vs BBM, you are gaining 40 cfm of intake flow and more on the exhaust side, those Edels will make it run real well. However the chambers will likely be larger than the C8s even though they claim the same size, be sure to run a 1020 gasket not an 8554 which is way too thick. The BBMs would gain even more, but it adds cost.
Do you have headers that will fit the CJ exhaust pattern? FWIW it's different than the C8AE-H, the exhaust port is about .250 lower when measured against the bolts.
One last thing, not that the SM or SD intakes have a low end problem, but with your 3.06 1st gear, you will have a lot of torque multiplication, so don't be afraid of the single plane. 3.06 X 3.70 = 11.33 SLR, that is equiv to a Ford wide ratio toploader with 4.07 gears, and that's before the torque multiplication a converter provides that car should launch hard