Holley Terminator EFI?

[schaferstephen]

Does anyone here have experience with this setup?

I'm building the 250 that I've been talking about on here for years... FINALLY about to stop bothering yall with my changing plans and actually get it done. Looking at Mike's head with some port/polish work, a 274/274 108 hydraulic cam, a T5 mated up to a limited slip 8.8 3.27 rear end, 5 lug all around with disc in front, DUI ignition for now but maybe a MSD box later... Considering either the oil through 1.65 rockers, or the roller tipped 1.6 rockers.

I'm thinking about doing the Terminator to fuel the beast... Does anyone have any experience with this? Or other suggestions?

Thanks guys... Will post pics as it comes together.

EDIT: I was calling it the Avenger... Should be Terminator. Duh.

 

[62Ranchero200]

@schaferstephen,

I can't offer you any experience with the Holley EFI setup, but I am VERY interested in your build, because your engine will be almost identical to mine, although I'm running a C4 with a stall speed converter. I also have a 250 with the aluminum head, 1.6:1 rockers, the 274/274/108 cam and a DUI. Two key differences:

1. I'm running a "500 CFM" Holley 2300 2 BBL. Currently in the process of trying to tune the carb with some professional help;

2. I'm running "early" 300 rods, which are 1/3" longer than 250 rods with nearly identical journal bearing size and pin size, and very short custom forged pistons. This gives near zero deck height, promotes much better "squish" and thus more efficient combustion, and discourages detonation.

I'm interested in your build because one day, if I feel I have extracted as much power as I can from the 250 with a carburetor, I may consider fuel injection.

Thanks
Bob

 

[schaferstephen]

That sounds really cool, I'm interested in your build, mainly in your pistons. Compression is one fear of mine. I'm not afraid at all of running Premium gas, I feel like if I leave my compression lower I may miss out on a good bit of performance. Can you give me a bit more detail on what/where you found your rods and pistons, cost, and if you have any clearance issues with the high ratio rockers and the effective zero deck height?

Thanks bossman!!

 

[62Ranchero200]

That sounds really cool, I'm interested in your build, mainly in your pistons. Compression is one fear of mine. I'm not afraid at all of running Premium gas, I feel like if I leave my compression lower I may miss out on a good bit of performance. Can you give me a bit more detail on what/where you found your rods and pistons, cost, and if you have any clearance issues with the high ratio rockers and the effective zero deck height?

Thanks bossman!!

The rods were just stock 300 rods, although they were refitted for ARP rod bolts. "Earlier" 300 rods have rod journal and piston pin sizes very close to the 250 rod; "late" 300 rods could be used but are not as compatible, so would require more machine work. The 300 rod is .3297" longer than the 250 rod, which requires the custom piston.

Compression height = 1.300, pin diameter = .912, the same as the pin diameter from a 250. A set of six forged pistons costs $575 + freight from RaceTek Pistons (owned by the former owner of JE Pistons). I ordered my pistons with a 15 cc dish because I wanted to be able to run on pump gas (93 octane super unleaded). If you decide to go that route, I can get you in touch with the machine shop that set up the combination, and/or get you a copy of the custom piston build sheet.

Thanks
Bob

 

[schaferstephen]

If you could, I'd really appreciate the info. Feel free to send me a PM. Not 100% sure what I'm going to do, but I really would like to have the info so I can really consider it. Thanks!!

 

[rocklord]

The 300 rods you want are from the 65-68 engines, the 69 and later rods have the 0.975 pin size.
Here is an eBay auction for the early rods:
http://www.ebay.com/itm/4-9L-300-1965-6 ... true&rt=nc

Look for the casting code beginning with C5TE-A

Hope this helps.

 

[schaferstephen]

Just to update y'all.... I have talked to both Holley and Edelbrock. They both told me that their EFI systems are designed only for V8's, and will not work with the Inline 6's... Bummer.

 

[bmbm40]

A couple of guys on here have made EFI setups using Tempo throttle bodies and Megasquirt. You would think with all the v6 Ford EFI vehicles (throttle body) it would be reasonably easy to do- and not too expensive. Also at least one guy on classicbroncos.com has one on his 250 that he pieced together.