5.7 with hilborn injection

-
Dorian

Dorian

dorian
Joined
Jan 28, 2006
Messages
854
Reaction score
101
Location
Medicine Hat, Alberta, Ca
Hi everyone
Been playing around with the idea of refreshing a 5.7 hemi and installing the largest cam I can find and putting a hilborn stack injection on it. I want to run it in my 67 Cuda, weight 2700# 4:88 gears, ladder bars and an altercation front end. all of this running on alcohol.
I know you will probably want more info
But any ideas on what I might run with this setup? Guesstamit on HP?

Thanks

Dorian
 
I guess the first question is, where you gonna get a hillborn intake to fit a 3G hemi?
 
Hilborn offers an efi version for 6.1 intake ports. Here is my forged 5.7 with hilborn:

CEE567AD-EC6A-4432-B256-05F9D8C3B5D0-3381-0000044154EC60C8_zpsca421956.jpg


I have not been on the dyno yet. I will be within the month.

FYI- most of the high rpm drag race guys are running the drag pak intake with great success. They are running 25x/26x cams.

Also, you mentioned 'refreshening' a 5.7- are you talking building a forged bottom end or using factory components? You can't run a very big cam with factory pistons (22x/22x). I don't know if anyone has fly cut the pistons and tried to run more- most build a forged motor if they want more.

And are you talking hilborn efi or hilborn- pump style?
 
You could probably also use an Indy ModMan intake and make your own custom top plate to accept individual throttle bodies and stacks.
 
Uhcoog1 said:
Hilborn offers an efi version for 6.1 intake ports. Here is my forged 5.7 with hilborn:

CEE567AD-EC6A-4432-B256-05F9D8C3B5D0-3381-0000044154EC60C8_zpsca421956.jpg


I have not been on the dyno yet. I will be within the month.

FYI- most of the high rpm drag race guys are running the drag pak intake with great success. They are running 25x/26x cams.

Also, you mentioned 'refreshening' a 5.7- are you talking building a forged bottom end or using factory components? You can't run a very big cam with factory pistons (22x/22x). I don't know if anyone has fly cut the pistons and tried to run more- most build a forged motor if they want more.

And are you talking hilborn efi or hilborn- pump style?
Click to expand...


I was planning on stock internals for now with the largest cam available for it. I will be using the mechanical fuel injection (pump).

A stroker kit with bigger aftermarket heads will be in the future but for now just the stock set up.
 
I haven't run it at the track yet. Killed the computer, don't have it back yet, still need to dyno tune, yada yada yada. Hopefully soon.

Wiseco pistons, k1 rods, 6.1 crank, stage 3 heads, 11.6:1 compression. 218/224 on 113 with .580/.580ish lift.
 
There are a number of companies that make Individual Throttle Body kits for the Gen III Hemi. Though I know of no company that is making a dedicated mechanical fuel injection setup, you might consider contacting Hilborn's technical representative to clarify if their electronic setup could be modified for use as a mechanical setup.

If you were to adapt a mechanical fuel injection setup you would need to use a standalone controller like the one from MSD for your ignition as the Gen III hemi doesn't have provision for a mechanical distributor.

If you look at the Uhcoog1's setup it appears as though it is a mechanical setup with the fuel lines running to the outside of the throttle bodies. These "fuel" lines are actually vacuum lines that allow for sending the manifold vacuum signal to the computer. The lines give the setup the old school mechanical fuel injection look.

Here is a list of some of the companies that sell Individual Throttle Body Systems for the Gen III Hemi:

http://www.hilborninjection.com/product.asp?Id=405&CatId=177

http://www.borlainduction.com/v8_kits/hemi_kit.html

http://www.extrudabody.com/servlet/the-288/V8-Kit-cln--Hemi-5.7ltr/Detail

Keep in mind when pricing various systems that listed prices frequently don't include the price of the ECM.

Finally in my opinion you would be much better off with electronic fuel injection as opposed to mechanical fuel injection.


Best of Luck with your Project.

Regards,

Joe Dokes
 
Hilborns efi can be used as a mech as you stated. I talked to them and they said the same thing . I would use the MSD controller too. Just wondering how it would perform in a 2700lb racecar.
 
Mind sharing what that set-up cost you complete--Just the intake,stacks etc.-Thanks Steve
 
Dorian said:
Hilborns efi can be used as a mech as you stated. I talked to them and they said the same thing . I would use the MSD controller too. Just wondering how it would perform in a 2700lb racecar.
Click to expand...

I'm thinking beautifully. A 6.1 with a nice cam, a set of headers and a Hilborn setup should have at LEAST 525 HP at the flywheel, 575 would not be unreasonable.

Using several online calculators: Assuming 550 HP in a 2700 Lb. car 9.90s to 11.00s in the quarter should be possible. I think it's safe to assume optimal gearing and traction would be necessary to run get into the 10s.

Regards,

Joe Dokes
 
as long as its your money we are spending,,,go the complete old school look,,, arrington has a conversion kit to make the gen 3 hemis use a distributor,, mopar performance was also slated to make one available with a mechanical fuel pump port,, i doubt ma mopar came thru with the goods,,, the arrington piece is not cheap,,,
 
Ya but they have nice stuff! Herb is getting a 426 build with electronic fuel injection on alchohol. They are custom grinding the biggest cam to date for it and they figure it should make about 650 at the rear wheels.

Will keep you posted when I find out exact specs. Again not cheap
 
You must log in or register to reply here.
-

Back
Top