351w intake manifold height

[HCP 65 COUPE]

Does anybody happen to know the max overall height of the intake manifold for a 351w in a gen2 coupe? Or could maybe tell me combinations that for sure fit. Im building a custom intake and dont have the engine back from the engine builder yet, so I can't mock it up just yet, but want to get the cad work nailed down before hand. Searched for a few days here and on the other forum but to no avail.

[Garry Bopp]

65 coupe,

I've got an older coupe, #031. I'm running a stroked 351W with the poly engine mounts. My manifold is an Edelbrock Performer (not the RPM or AirGap) and a Holley 770 Street Avenger Carb. Air cleaner assembly is the standard Stelling & Helling round unit. I have roughly 1/4-1/2" clearance with the hood. You can check the Edelbrock website for actual height of this manifold. It is considered a low-rise, dual plane manifold. I've been told that a running change was made to the bubble of the hood several years ago that raises it about 1-1.5" to allow slightly taller manifold/carb combos. Would be best to check with the tech guys at FFR.

Garry

[HCP 65 COUPE]

Thanks for the info on this one I will check the edelbrock site to get the height I need.

[CJBergquist]

I have the Torker II and the same air cleaner and I have about 3/4" clearance

[tirod]

The issue is that hi rise manifolds were yet to be developed at the time the Daytona was designed.

This picture demonstrates part of the issue, and a potential solution. Although a Chevy small block setup, it gets the point across: http://www.hotrod.com/techarticles/engine/hrdp_0811_edelbrock_pro_flo_xt_efi_install/photo_02.html

[STLMARSHALL]

The issue is that hi rise manifolds were yet to be developed at the time the Daytona was designed.

This picture demonstrates part of the issue, and a potential solution. Although a Chevy small block setup, it gets the point across: http://www.hotrod.com/techarticles/engine/hrdp_0811_edelbrock_pro_flo_xt_efi_install/photo_02.html

That is a good solution for the chevy, but the Ford's front mounted distributor means the intake has to be turned to the side. I believe the Ford solution to the same problem is a bit taller to get between the distributor and the valve covers.

[HCP 65 COUPE]

Garry/All

My current design is 9in tall over all if I have the height of your setup right it is 9.825. The torker2 is just .10 taller than the performer.

The pro-flow xt style wont work in this app because im building an ITB setup. The distributor is a non issue because its gettting converted to c.o.p.

[Stengun]

Howdy HCP,




The pro-flow xt style wont work in this app because im building an ITB setup. The distributor is a non issue because its gettting converted to c.o.p.

What's an ITB setup?

What's your plans for the distributorless COP ignition system?

I have a stroker 351W in my Spyder and I'm running EFI w/ a Edelbrock Victor Jr intake ported for injectors and a distributorless Coil Near Plug setup. I haven't got it started yet but I'm working on it.

Paul

[HCP 65 COUPE]

Stengun,

An ITB Is an Individual throttle body injection setup.

I'm planning on running ls1 coils mounted to the valve covers so it's not exactly cop.
Going to run mega squirt in full sequential.

[tirod]

Stacks is ok, the Pro Flow for the Ford just tilts the intake to clear the distributor - some. Edelbrock would like to sell a special one to help.

I've been looking into the COP, too. Uses the 3.8 cam sensor, and clears the manifold fine. How close the coils are is a bit relative - COP coils use a 4-6 inch spring conductor, they aren't direct contact. And a V8 has heat issues with manifolds in close proximity.

[ Went back over this in the Megasquirt tutorial and was reminded the LS coils have ignitors - 12VDC and circuitry to load the coils without having to use current from the ECU. That makes it less a burden. They also recommended the LS2 truck coils with heatsinks as being better. Look purty, too. There's a lot out there to learn. ]

351W was phased out in 96 just before COP was fielded, so it's a bit workaround to achieve. It has a lot to offer with more dwell for better spark, and much shorter wire runs for less crossover.

As for height, Edelbrock says its about the same for all the models. That picture tells the story - a high rise manifold takes up a lot of space the roadster or Coupe were never designed to need. Mostly the reason so many production sedans use hood scoops.

[Stengun]

Howdy,

I'm using the MSD LS1 coils myself and I'm going to mount them on top of the valve covers too. Here's a bracket that I'm working on to hold them......

http://i222.photobucket.com/albums/dd248/stengun/1348357240_zps92870913.jpg

I'm also using a MSD cam sync plug ( cam position sensor ) and a DIY 36-1 crank wheel ( it arrived today ).

Yep, the LS1 coils have a power wire that runs to each coil and only uses the signal from the ecu to fire the coils.

For a computer I'm using a Ford EEC-V and a Quarterhorse to reprogram the ecu.

I'm hoping to have a test start this weekend.

Paul

[tirod]

Very interested in your success. This is a technical tour de force, as somebody has to design a system the factory never did. The whole project is the epitome of hot rodding - putting together parts nobody ever knew would work together.

Having coils over the valve cover pretty much hides them. I know it's just window dressing, but the finished car is all about expressing our ingenuity and creativity. We may not be into the show car scene, but the dry industrial look is still a look. And we probably shouldn't have things bouncing around over the coils when the hood is up. Non conductive would be a plus, ventilated, and possibly an appropriate color. A grid structure that copies the Cobra covers with floating bars and letters over the coils would work. New school and retro at the same time, and gets that look back on top where we are used to seeing it.

A 3D printer could knock those out easy. The polymer would need to be heat and oil resistant.

[HCP 65 COUPE]

Thought I would give a little update to my Big/Little project.

I have machined most of the difficult parts for the ITB setup and have a few pics to share.

All the parts you see in the pic's where machined from Billet Including the base of the Intake.
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[Garry Bopp]

HCP,

You've got me drooling all over the keyboard! Do you have your own CNC cutter? That is incredible work!

Garry

[HCP 65 COUPE]

Thank you for the compliment My father and I own a machine shop in CT. All the parts where machined on Haas 5 axis machining centers.

[CHOTIS BILL]

Having made a few manifolds myself I can truly appreciate all the time and effort it takes to under take such a project. Very nicely done it is a work of art.

Bill Lomenick

[68GT500MAN]

That is a piece of art!!

[HCP 65 COUPE]

Thx Guy's the comments really encourage me to keep going its been a pretty long road so far and was starting to doubt my reasoning with this project, there will be more to come as I move along stay tuned.

[skullandbones]

I'd love to see the linkage that will operate the throttle bodies! Have you worked on that yet? WEK.

[HCP 65 COUPE]

The linkages are only partly done so far, Hoping to get most of it or all of it done this weekend. We will see.

[HCP 65 COUPE]

Here are some more pics. These pics are of the lower linkage one at full throttle and the others at idle. Eveything is ball bearing supported and so far itsas smooth as glass.
17017 At Idle

17018 Close up at idle

17019 Full Throttle

It feels pretty progressive down low and up high and the cable cam is changable, and reversable as well, that will allow the cable to come in from the front or back.

[Rodster]

HCP -
Beautiful machine work - keep us posted and share lots of images, please.

-wayne

[Jacob McCrea]

I've seen a ton of exceptional work on this site and this is right up there with the very best. Thanks for sharing.

[HCP 65 COUPE]

Here are some more pics of the linkage to check out.

The linakge is working far better than I expected, the TPS return spring is almost strong enough to return it to idel.
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[HCP 65 COUPE]

More pic's for your enjoyment.

This week I machined a custom timing pointer and crank trigger sensor mount.


17494


I installed the March Style Track Serpentine conversion that looks awsome but a pita to install.

17493

And I machined a bushing to convert a 3.8L v-6 cam sync to the 351w block.

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