Dual quad intake to fit under smooth hood

[FrankJohnson69]

Dan, I have an ERA with a smooth hood. My intake is an old Holman & Moody medium riser with 600's on it. the only thing you will have to worry about is the rear molded bracing on the hood that will just barely touch the air cleaner. Just trim that back (neatly prior to painting) about .25" and you will be good to go. If you'd like I can send you pictures measurements or what ever you need.

Regards,
Frank

[DanEC]

Originally Posted by FrankJohnson69

Dan, I have an ERA with a smooth hood. My intake is an old Holman & Moody medium riser with 600's on it. the only thing you will have to worry about is the rear molded bracing on the hood that will just barely touch the air cleaner. Just trim that back (neatly prior to painting) about .25" and you will be good to go. If you'd like I can send you pictures measurements or what ever you need.

Regards,
Frank

Frank, that would be helpful. I can handle trimming the hood inside frame if necessary.

I wonder if there is any relatively fixed point on a manifold that the height up to the front carb pad could be measured - and then compared to another manifold. Like to a valve cover bolt or something. My engine builder is trying to help but he's primarily into engines and not ERA street cobras and he doesn't have a good yardstick to compare to.

I finally figured out these 390 HP heads are pretty much the same basic casting as the 427 LR head, except for smaller valves. Port dimension appears to be same as for both MR and LR 427 heads. But, from the posts by Anthony and Barry above and from what I can find - It sounds like the MR port is physically raised a little higher up in the head. I guess I really need a LR 2x4 intake if I can find one. It doesn't sound like a MR intake should even match up with these heads (?)

Thanks - my FE education continues.

Dan

[Sizzler]

I don't know why you care about the intake ports on the head.

"Low-riser", "Medium-riser", "High-riser" all pertain more to the intake than the heads and describe the angle of the runner between the head and carb flange.

Low riser's had the carb mounted relatively low, to fit under T-bird hoods. High-riser's had a straighter shot from the carbs into the chamber due to the raised carb pads on the intake...they were much higher than a low-riser's.

Medium risers were just that. They mounted the carb somewhere between the extremes of the high riser and low riser intakes. They also reconfigured the runner shape. A low-riser's intake port in the head is actually taller than a medium-riser's port.

The only way to answer your question definitely is to lay a straightedge along the carb pad, and measure. Or rely on your builder. Just make sure your builder knows specifically the application the motor is going to be installed. I would think Keith Craft might have a few measurements available to him as well as a little experience as to what will or won't work/fit.

[DanEC]

If I better understood the interchangeability of FE heads and FE intakes I probably wouldn't care as much. But on the theory that a litlte knowledge is a dangerous thing and that there appear to be short port, medium height port, tall port, standard floor, and raised floor heads - not to mention the TP heads, it's all been quite confusing. I fear paying a good sum of money to have a nice engine built only to find I can't close the hood. But - it appears to all be boiling down to needing a LR dual quad intake. Or, as the builder put it - looking for a needle in a haystack.

Dan

[DanEC]

Originally Posted by FrankJohnson69

Dan, I have an ERA with a smooth hood. My intake is an old Holman & Moody medium riser with 600's on it. the only thing you will have to worry about is the rear molded bracing on the hood that will just barely touch the air cleaner. Just trim that back (neatly prior to painting) about .25" and you will be good to go. If you'd like I can send you pictures measurements or what ever you need.

Regards,
Frank

Frank - from looking at your photo gallery that intake actually looks pretty tall. Bob P. sent me some photos of a medium riser with the air clearners sticking up in the hood scoop about a 1/2 inch, maybe 3/4 inch. Sounds like you found the right combination. Did you mill the carb pad any?

Dan