Eddie Hansen

ok I have posted my engine build but basically a 455, 30 over, harlan 1.6, approx 9.5 compression ratio, 3.08 posi 4 speed, cam I am getting some advice on (sig erson), was going to use a performer, with a quadrajet but saw a holley street dominator on fleabay, the price is right ( for now) anybody have any history with these seems the rpm range is about what i am looking at ( idle to 5200) just thinking out loud.

cutlassefi

IMO Performer all the way.

Eddie Hansen

okey dokey LOL...thanks Mark,

citcapp

x2

Warhead

I will go AGAINST the grain here-
performer is a step up from stock for power,
SD is a better manifold though, for a higher output engine IMHO.
I would wait for the performer rpm to come out, though.
Jim

cutlassefi

I am waiting as well but that manifold is not the right one for his application, too tall of a gear and it won't develope enough hp and/or rpm to warrant a single plane imo.

citcapp

I am waiting for the RPM as well. Damn its taking them a long time after all the hype

Olds64

I have a Performer on my 455. It is a champ!

Eddie Hansen

I will get the performer, maybe get the airgap? I would love to get an oldsmobile stock aluminum manifold but the price is a little steep for my blood....

Warhead

You mean that the single plane will not allow him to smoulder the tires from a dead idle leave. Torque is not an issue with either manifold here, but you can never have too much of it.
For the gear, a performer is a good choice, it will have MORE torque at low rpm's, but will give up power above 3500 rpm.
It will be fun.
Jim

cutlassefi

Jim I obviously agree with you to a great extent. However it doesn't have to be limited above 3500 with a dual plane. If you do a few things, cut the center divider and add some plenum volume via a spacer, it'll breath better past that no problem. Like this;

firefrost gold

There is a street dominator on ebay looks like a nice set up knowlton thunder heads said they did a 455 set up with a street dominator said it was a good intake for the street.

Warhead

Ya know Jim, my biggest gripe with the Holley manifold is aesthetics.
It's just does not look as good.
Funny, eh?
Jim

firefrost gold

what about an old school tarantula with the twisted carb mount?