Efi 409

[lnirenberg]

Well laid plans gone somewhat awry. The porting on the new aluminum heads is almost done and the hydraulic roller cam with full roller setup is ready to go. The build was to include a Mass-Flo EFI setup. This system requires a single plane intake that to date has never been cast. One of the 409 gurus in the wilds of Alberta has designed and is attempting to have a single plane intake cast for the W head motors but is having difficulty finding a foundry who can cast his design. As it was supposed to be ready around the 1st of the year and is only marginally closer to fruition than early spring I am looking for other ideas for a sequential system that will fit under my stock hood. Any ideas would be most appreciated.

[GetMore]

I know one option that could work is a sheetmetal intake, but that'll be expensive.
You could also try making a modern design version. Front throttle body, long plenum, straight runners. Since the throttle body would be on the front you will have room that the "carb" and air cleaner would have used.

[Jim Craig]

Hilborn Injection is working right now on a EFI stack injection unit for the 409 -- call their east coast EFI tech Andy Starr. I bet it will fit under the hood of an early Chevy.

[jfaria78]

I second the hilborn, plus it looks cool!

[ProTouring442]

Have you checked with Lamar Walden? http://www.lamarwaldenautomotive.com/id6.html

While you're there, you can pick up one of his 482ci kits! :yum:

Or how about an all aluminum 409!?!

Shiny Side Up!
Bill

[lnirenberg]

We have solved the problem and I should have my mass-flo unit by the end of the month. I'm running a stock stroke 1965 passenger car iron block with stout internals and a full hydraulic roller setup. The edelbrock aluminum heads have spent a lot of time being ported and on the test bench to get them to flow some serious air because they are pretty rough out of the box. All that said, Lamar's stuff is geared towards racing engines and his EFI system, also a piece of art, works with his racing heads. His scratch built engine uses a World aluminum big block modified to accept his heads. The only thing they have in common with my engine is the scalloped valve covers. As to the hilborn system, it is a beautiful piece but major overkill regarding its fuel/air limits as stock stroke 409s have design limitation regarding how much fuel/air they can actually use. Early on in the planning I got a quote from Inglese for a complete soup to nuts electronic stack system and it was close to $15k. Given the fact that for my use either stack system would ultimately be eye-candy, very very nice eye-candy, I have gone with a more bang for my buck approach to hp & ft/lbs. I think in the end my EFI 409 and other enhancements will be very unique, pro-touring in the sense that it will have a modern induction system and updated suspension for enhanced roadability but with an old school feel. Blah blah blah--sorry, I sure can ramble.

[GetMore]

Blah blah blah--sorry, I sure can ramble.
I'll say! :razz: I read your post and I have no idea what you are going with.
Then again, I just want pics when you get it!

[lnirenberg]

I'll say! :razz: I read your post and I have no idea what you are going with.
Then again, I just want pics when you get it!
409s are a different animal than the majority of motors here but as a Chevy guy they have a nostalgic pull that I am unable to resist. Basics--an iron 409 block from a 1965 full size Chevy, 10:1 compression, stock crank, ross racing pistons, new edelbrock aluminum heads, comp cams hydraulic roller cam, Mass-flo EFI setup, BSs new 409 serpentine system, aluminum radiator and dual electric fans. Goal is 500 hp & ft/lbs on pump gas. I will post many pics once we start the work under the hood.

[Jim Craig]

We have solved the problem and I should have my mass-flo unit by the end of the month. I'm running a stock stroke 1965 passenger car iron block with stout internals and a full hydraulic roller setup. The edelbrock aluminum heads have spent a lot of time being ported and on the test bench to get them to flow some serious air because they are pretty rough out of the box. All that said, Lamar's stuff is geared towards racing engines and his EFI system, also a piece of art, works with his racing heads. His scratch built engine uses a World aluminum big block modified to accept his heads. The only thing they have in common with my engine is the scalloped valve covers. As to the hilborn system, it is a beautiful piece but major overkill regarding its fuel/air limits as stock stroke 409s have design limitation regarding how much fuel/air they can actually use. Early on in the planning I got a quote from Inglese for a complete soup to nuts electronic stack system and it was close to $15k. Given the fact that for my use either stack system would ultimately be eye-candy, very very nice eye-candy, I have gone with a more bang for my buck approach to hp & ft/lbs. I think in the end my EFI 409 and other enhancements will be very unique, pro-touring in the sense that it will have a modern induction system and updated suspension for enhanced roadability but with an old school feel. Blah blah blah--sorry, I sure can ramble.


I believe you might have missed my point -- Hilborn is coming out with a stack EFI injector and it'll work perfectly with a stock 409 or an "out of control" 409 and I would suspect that it will be considerably less expensive then the "imposter" Inglese.

But congrats on getting you system figured out.............

[lnirenberg]

I believe you might have missed my point -- Hilborn is coming out with a stack EFI injector and it'll work perfectly with a stock 409 or an "out of control" 409 and I would suspect that it will be considerably less expensive then the "imposter" Inglese.

But congrats on getting you system figured out.............
Even at 1/2 of Inglese its 2X what I'm paying. The 409 will never be the air pump that a modern LS engine is so any extra juice a stack system would provide would not translate to hp or ft/lbs at the rear wheels.