I'm working on a rebuild of my '85 F150. The engine had been swapped by the previous owner, so I knew nothing about it. After taking it to the machine shop, turns out the 300 was actually a 240. I've purchased a 300 crank and rods to put into it. I've got the EFI exhaust manifolds and an Offy C intake for use with the 2 bbl Holley sniper system. My next question is what are some good cam recommendations? I've looked at this Lunati cam ( https://www.lunatipower.com/voodoo-hydraulic-flat-tappet-cam-ford-6-cylinder-240-300-250-256.html ) are there any other good suggestions?

 

Talk to your machine shop that is re-doing the head. You want a cam that will drop in with no modifications to the cylinder head. Ford valve trains are not adjustable. Some aftermarket cams require adjustment at the rocker arms, and to achieve that requires some parts and machine work to the head which is nice, but not cheap. See what they say and if they know of a cam that will drop in.

 

It would benice to talk ot the machine shop to see what they have to say but any change in the cam lift or milling of the head, decking the block is going to change how long the push rod you will need, most likely shorter.

But what I see as a issue is " 2 bbl Holley sniper system."
How nice dose it play with any cam that is not factory stock?
Ford's early EFI did not play with any cam that was vary close to stock but dont know if the Holley sniper system is like that?

You may want to check out the straight six motor area if you have not done so.
There is a few post on the Holley sniper system and 1 member has a built up motor just dont know what all he had to do to get it streetable?
https://www.ford-trucks.com/forums/forum52/
Good luck
ps you running a auto or manual transmission?
Too big a cam and auto you then need to change out the converter and can run into on vacuum to run power brakes or HVAC.
Dave ----

 

About a month and a half ago we had a '85 F150 come in with a I6 with the feed back carb and the EEC IV distributor. We gutted the emission system on the stock spec engine that was rebuilt earlier this year and swapped the distributor out for a non computer distributor and threw on a Holley Sniper 2V. It ran beautiful with no issues, the owner loved it cause the engine never started nor ran that good before.

I myself was wary of the 2V snipers but seeing how that one worked out I am contemplating running one on my V6 equipped El Camino if they have one that will fit the dual jet bolt pattern.

As far as stock vs non stock goes, at work we've installed snipers on everything from bone stock spec engines to very hot engines that are more race prepped. On the Sniper page on social media lots of people run them in drag cars with excellent results and the man that I will be paying to do the tune on mine has tuned snipers for stock to wild applications. There should be no issue with the sniper long as you pair the proper size sniper, the 2V sniper for example is only good to like 200 hp I think it is which is fine for a stock motor but wouldnt be for a non stock motor. the 4V 4150 stealth I have is good to 650hp and anything over 650 you want to look at the super sniper rated up to 1250 hp and if thats not enough theres the 4500 sniper that is rated up to 1500 hp.

 

Then it sounds like it would work with a hotter cam.
Just did not want him getting a cam that may not work with the Snipper EFI is all.

IIRC the Snipper will adjust timing so if you have a TFI distributor you could use it because the timing is locked on that distributor where you cant use the vacuum type distributor.
Dave ----

 

Of course, and if he was wanting to stick with the OE EFI system, Holley with their Terminator series sells a EFI kit that plugs and plays with the OEM EFI but you toss the OE computer for their computer that you can tune no different than with the sniper. I personally may be doing this if the sniper gives me trouble long term as a daily driver I will switch to OE EFI and just get their OE upgrade kit.

On the TFI distributor he can use it, all snipers come with a coil driver for this kind of use. Many people have RFI issues when running the Hyper Spark or Dual Spark distributors from Holley and we know its not because of the installation cause they didnt have RFI until after they upgraded to the distributor. Why Holley strongly recommends getting your EFI running perfectly first before you introduce timing control.

I personally wont be using timing control, I am still waiting for DUI to finish building my DSII Distributor with a steel gear for roller cam application. I may upgrade to timing control at a later date but for now I dont want to lose my OE tach which the timing control tach output I dont think is the same as OE tachs. If I can get Dakota Digital to put out a cluster for our trucks in their Retro series for the OE look I would gladly take my truck to a chassis dyno to get the timing curve set. People who have done it and had no problems with the timing control talks about how smooth the idle is, how much more responsive the engine is and some even claimed to have seen a increase in fuel economy.

Just a bit of extra information on the sniper, while yes the sniper is self learning, this self learning is just for the fuel map while driving. It wont self learn hot restart fuel map, it wont self learn the cold start fuel map, etc. It is strongly recommended to have it tuned or tune it yourself via laptop to get the best performance. I personally will be paying to have Mad Science Motor Sports here in Texas to do my tune, he also does world wide remote tuning as well. Every tune he has done has seen a substantial increase in fuel economy as the Sniper like all of Holley`s products are tuned to be on the rich side as a rich tune wont harm a engine unlike a lean tune. It has been said numerous times from the tuner that his customers with his tune is seeing between a 6 and 9 mile per gallon increase in fuel economy over the sniper wizard fuel map tune.