Recommended manifold for V8 Weber/Edelbrock conversion?

Hello, before I invest in the Weber 500 / Edelbrock conversion for my '72 P6 V8, can someone kindly tell me the best inlet manifold to use? Edelbrock or Offenhauser? Many thanks

I used the Offenhauser dual port with a weber 500. It was on the car when I bought it, but apparently the dual port bit means it is basically two manifolds one on top of the other. This keeps the air speed up and stops the fuel condensing, especially on a small engine like the 3,500. I think that's what it's about but I may have made that up

Thank you for the information. Is anyone using the Edelbrock Performer manifold on their P6 conversions? Is bonnet clearance an issue with the Performer manifold? Thank you

There's no issue fitting an Eddie Performer manifold under the bonnet of a P6. It'll fit fine. You could top it off with any suitable four barrel carb, or try a fuel injection set-up such as the Holley Sniper. I used to have a 390cfm Holley on a Performer intake in my V8 P6, and it made for entertainingly brisk acceleration, but saw me visiting the petrol station very frequently!

Thank you Sir, that was exactly the answer I was after.

mrtask said:

There's no issue fitting an Eddie Performer manifold under the bonnet of a P6. It'll fit fine. You could top it off with any suitable four barrel carb, or try a fuel injection set-up such as the Holley Sniper. I used to have a 390cfm Holley on a Performer intake in my V8 P6, and it made for entertainingly brisk acceleration, but saw me visiting the petrol station very frequently!

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Surely the Sniper using two throttle bodies is inherently inferior to simply using the Hotwire sequential system, especially when mapped and using newer 4 hole injectors.

@PeterZRH In all honesty, I haven't a clue! I've no experience with Rovers own Hotwire EFI, nor of these new-fangled Holley Sniper systems. I'm not going to pretend to fully understand how either system functions. I gather that there are Sniper systems which mimic a four-barrel carb, using four injectors, and four throttle plates, that they're supposed to be quick and easy to install, and tune themselves! Whether or not they would function well on a 3.5 litre V8 I cannot say. Sure looks neat'n'tidy, and maybe requires less effort to tune than an older four barrel carb. Changing the jets in my Holley 390 was a bit of a pain.

I'm running the Rover Hotwire system run by megasquirt, but it's not sequential, it's batchfired. It's certainly more adjustable than a four barrel, and produces a better tune than my old Weber, but it's really complicated to do and takes a whole heap of learning.

I use the Weber 500cfm and Edelbrock performer manifold, simple to fit, performs well, night and day compared to SU's.
No clearance issues but it pays to fit the heat kit gasket and heat isolate the carb mounting bolts as well.