zrc3john

What's the best dual plane manifold for a 383 stroker? Would prefer dual plane since I hear it is better for low end and mid range power.....

gkull

Look up the dimensions of your head port and buy a manifold with the same size.

NewbVetteGuy

If you've got the hood clearance, I've heard the Dart SHP Air Gap is a great intake with far fewer quality / casting issues than the Edelbrock Air Gap.

No idea on gasket size; it's 2.00 in. x 1.25 in. -not sure what FelPro # that is...

https://www.summitracing.com/parts/drt-42811000

I'm curious what others come up with.

You said "Best" though so, so if money's no option: http://www.jegs.com/i/AFR-Airflow-Re.../4804/10002/-1

Adam

mikem350

But, check hood clearance!!!!!!

cv67

Damn they are almost $600 now?
They are nice and all do like the ability to switch up but wow.

Must be getting old or bought too many used ones over the years

Sometimes holleyperformance on ebay has some good deals on returns, blems etc. Picked up a 300-25 and the impossible to find 300-110 that will eventually find its way on my 383 for $250 shipped total.

The ones cast overseas now are not anything like what you could order up in the 80s. Port alignment sucks, bolt holes are hit and miss and not much metal to work with if you enjoy using a grinder. BUt...cheaper and definitely lighter. Get what ya pay for I suppose
Dist location is right on the money all I really cared about

zrc3john

My 73 vette has the clearance...The 350 block that's in there now houses an Edelbrock dual plane manifold with a three inch air cleaner and it's ok....The Dart should fit...

Jebbysan

The Dart is an excellent piece.....

https://www.summitracing.com/parts/drt-42811000

Jebby

BlowAMouse

I use the Edelbrock RPM Performer on my 73 blown 383 strocker

May not be "The Best" choice for my application but works great so far

Jebbysan

This article is referenced a lot and has a lot of good info including heights.......

http://www.hotrod.com/articles/dual-...d-comparisons/

Jebby

MotorHead

Hands down the RPM Air Gap is the best dual plane intake out there, partly because of the cutdown divider between the two side allowing better high RPM HP.

I did a side by side comparison with the Vic Jr intake and the numbers were almost identical up to 6000rpm+ where the Vic Jr gained a couple of ponies

Jebbysan

Yep......it flows well to that point.
I find the Air Gap to peter out at about 530 horsepower or so.....
The Victor works better at this point.....
The Victor also works better all around on large cube small block that are semi-radical....like my own. Get too radical and you need an HVH space on the street to signal the carb.....

Jebby

fishslayer143

Edelbrock RPM Air Gap on mine...with port matching .. 525 HP at 6300 RPM

zrc3john

So you port matched the intake to your heads I imagine.......I'm sure it's pricey.....I paid 1,000 dollars to port my intake and I/Hs on my C4 ZR1.......Added around 35-40 horsepower ...

Dont think if you port match the intake on a SBC to the heads it won't make that much of a difference....

Im running a RPM dual plane w 190cc heads on my 350 and it's fine...Did not port match the heads....

BLUE1972

Weiand - great fit and real nice even pull through the entire RPM range. Even the engine builder was impressed when it was on the dyno meter ...

fishslayer143

was not suggesting OP or you to spend money to port anything.. simply giving him an idea of what power range can be achieved with an RPM Air Gap on his 383 .. its also making 498 ft lbs of torque.... I suggest he leave single plane manifolds for the track

zrc3john

Yes I hear good things about the air gap manifold.....Funny thing is I have the 383 short block covered up on an engine stand in my garage for the past three years......You would think by now I would just swap out all my parts from my 350 to that and be done with it.....

Stroker is fully forged with SRP Pistons, internally balanced,O ringed with a custom grind flat tappet cam and is bored .30 over......Thing is my 350 runs so good I guess that's why I'm delaying.....

I will put up the specs of my 350 in there now on another post and maybe you guys can give me an idea of what it's worth just for the short block....If I do the 383 , all the parts from my present 350 will go on the 383 short block........

So for sale soon will be my 350 short block with the intake......I know it's blueprinted,.40 over with hypereutectic pistons and has a nice healthy Lunati cam......Has around 15,000 miles on motor....

ajrothm

Edelbrock Performer RPM Air gap is a proven intake, throw it on and forget about it.....it's proven itself time and time again. If you have the hood clearance, you could also throw a 1" open spacer on it and gain a few extra HP.

Now if you are talking a 525hp+, 6500rpm+ 383", then I would go Vic Jr with some work and a spacer.

pauldana

BEST???

AFR..... but it going to cost you... But you did say BEST..

I have the AFR single plain,,,,, 0 none nada zilch heat transfer...


$600

http://www.airflowresearch.com/sbc-t...-street-strip/

A test of several different duel plain manifolds,,, AFR best

http://www.hotrod.com/articles/dual-...d-comparisons/

I am making 650hp with the AFR titan..

ignatz

I'd been running the factory Z28 aluminum hi-rise 3932472 on my 383 forever. Any info (or opinions) on how it might stack up against any of today's intakes? Pretty good back in the day on a 302. And it fits under the stock hood.

JoeMinnesota

I've researched for a 383 and now sticking with a 355ci build but going with the Weiand Street Warrior to fit it all under a stock SB hood. Depending on your cam etc. if you read the comparisons, there is not a gigantic difference between the better dual planes from 2900-5800 rpm. I think changes in weather alone can swing your tq and hp more than some of these intakes. Performer Airgap and Summit house brand are among some of the others that scored decent numbers.