The pic says it all. I'll be sending the same picture to Edelbrock today.

 

That does not surprise me. I bought one new that had the injector hold down screw holes drilled crooked & went clear through into the intake port creating a nice vacuum leak. Whats worse is the at the time, Edelbrock had the replacement on a 6 month backorder. I had to bite the bullet & spend another $150 on a Accel base.

 

Yeah I actually hit one of thsoe injector screw holes on one port while I was grinding. The hole is ver small and I'm just going to JB-Weld it over, especially since I keep those holes plugged with screws anyway.

 

Might just be me, but I wouldnt put JB weld in the port, reguardless of the size of the hole, if that stuff cracks or brakes after it has been heated up and cooled down a bunch of times (which I have seen it do) it will most likely kill you valves on its way through. Even my Superram base has its flaws and potential vaccum leaks with bolt holes appearing after porting it. There may be better ideas but I just put Ultra black silicone sealant around the bolts when installing them and so far, no vaccum leaks.
Good luck!

 

Hmmm...good call. Maybe I'll just use some silicone also.

 

Rick, what does your car run in the quarter?

 

That's tuning, dude. Edelbrok has obviously figured out that some cylinders need more air than others in order to optimize the engines potential.

 

Hey Paul,
I remember a thread of yours from a while back about a cam swap in that 383. Are you going to be swapping that out while your intake is off? There will never a better time than now! If so what cam did you chose?
Tony

 

Just to clear up what might be some confusion....one of those ports is stock Edelbrock and the other is after I ported it....that's why it's so much bigger.

Tony I did the cam swap yesterday actually. I switched over to the LPE 219 cam. Today I started putting everything back that goes infront of the engine...until it started to rain.
I also dropped my entire intake setup and valve covers off to be powdercoated. I should be up and running again by next weekend although I'll still have to make some adjustments to my chip.

 

Good to hear that you're going to be trying the 219 cam, Paul. Maybe the Edelbrock base I've been running is part of the reason why my car never ran right. I actually ported it before it ever went on the car. My leakdown results endend up showing that three of my cylinders were losing 23% of the compressed air which =a rock of a motor. This is why my 383/SR/AFR/219 setup only ran a best of 13.2 at 102mph with a 1.9 60 ft. Good luck with the cam install and if you can still try and do a leakdown test on all of your cylinders. That way if your car still doesn't run as it should with the new cam you'll know why. Your setup should be putting 340rwhp and 450rwtq with the 219 cam and near-perfect tuning. Accept no less or not much less than these #'s. A member with a vette with your setup and iron dart heads puts 360rwhp and he probably has less compression.

 

Then what's the issue with the intake? Must be my untrained eye can't pick it up from the pick.

 

The picture shows how much of a restriction there is in Edelbrock's supposed "high-flow" intake. There is a wall about a half inch into the intake where the runners attach that I ground out. It opened each port by almost 3/8 of an inch.

 

Hmmn, still flows more than the stock base, doesn't it? If so, then I'd assume Edelbrock made it so it could be ported to suit.

Not sure you really have a beef with'em, IIRC, AS&M is the same base, but opened up...could be why the cost difference is so much.

 

Paul,

What you are demonstrating is the difference between the Edelbrock unported and the TPIS ported base. the TPIS is just an Edelbrock w/porting and their name cast on the top.

The difference here is you bought the Edelbrock and ported it yourself.

 

Last time I checked, and it was over a year ago, TPIS doesnt port their manifold anymore, unless you spend extra for it. So its a higher price, and its the same stock casting as the Edelbrock.