Suggestions for Carb, Intake, cam, lifters. Timing chain, headers

[Ferris95]

1968 F250 390 2bbl. Looking for an aluminum intake and a 4bbl carb. Thinking Edelbrock Performer and Edelbrock AVS2 1906 carb.
Or maybe even the Sniper2 or ProFlo 4. Any thoughts on that?

Also thinking of changing the cam and lifters and maybe timing chain while I have the heads off for a valve job and more. Want to keep it pretty stock or maybe a bit more. But I want to keep the non-adjustable rocker arm rail. Not sure what the lift and duration the stock cam is. And will a double roller fit inside the existing cover? And benefit of getting a double roller? Has rusty Hedman semi-long tube headers on now and want to get silver ceramic coated ones. Any advantage to changing to a different maker? Hear good things about Sanderson. Will out power steering on it and hope not to hit the Ford PS gear!

I appreciate any help with recommendations on any of the above parts. Been a while since I worked this deep on a car, but it’s getting fun!

[Jbarnes79]

I just finished installing my 390 that I had the shop build. It has the Performer heads and intake, Erson roller cam, running a sniper1 setup. On the dyno it put 365 hp and 473 ft. lb. at the crank with just a base tune on the sniper. Also using flowtech long tube headers.

Cam specs are 0.521 lift and 290 duration.

I really enjoy the sniper but it does take some time and learning to get it dialed in right. I've still got a ways to go to get it where it should be.

[Ferris95]

Hey Jbarnes, so you have a Performer RPM intake and heads, or a regular Performer intake and Performer RPM heads? From what I’ve gotten from Edelbrock, they only make the heads for FE engine in the RPM type.

So I assume I couldn’t do that cam with the regular non-adjustable rocker arms? I don’t want the truck to sound like a big cam makes vehicles sound.

Yikes, so the sniper is a lot to get dialed in? Did you have to drop your gas tank to put something in it? I was loooking at the sniper 2, but I like the idea that the Edelbrock ProFlo 4 has where I don’t have to put anything in the gas tank, and it’s basically port injection. Heard anything bad about it?

[Jbarnes79]

Both the intake and heads are RPM. I believe you're correct that you can only get the RPM type heads for the FE's.

That cam won't work with non-adjustable rockers so I ran with these.

https://www.summitracing.com/parts/csp- ... /make/ford

The cam doesn't produce a big cam sound or an aggressive idle but it does give a slight lope. No lunging when coasting at an idle and I'm still able to pull about 16 inches of vacuum for my power brakes.

The sniper allows you to really dial in your air-fuel ratio throughout the operating range. As long as you can learn enough to make sure your base map is ideal then it can be as hands off or as hands on as you would like to be with it. One thing I really like is if I'm having issues with it running the way I want then I'm able to data log it and see what the issue is with the free software you can download.

The fuel return was easy really. I used a brass fitting and drilled a hole for it to fit on the flange of the fuel-level sensor then ran a flex line from the Sniper to under the Cab where I connected it to a hard line I made up that attaches to the fitting on the level sensor.

Originally I planned to go with the Pro-flo but during that time they were having supply chain issues and I believe they were relocating their manufacturing. The wait time to get one was insane so I elected for the Sniper as a result.

I should probably quit being lazy one of these days and update my build thread


Edit: Just uploaded a quick video so you can hear it.
https://fordification.com/forum/viewtop ... 65#p777165

[DuckRyder]

I'd encourage you to head over and talk to some more knowledgeable people, but the Performer is a stock replacement manifold and the ports are actually smaller than some of the factory manifolds, honestly if i thought a performer got the bill i'd just try to find stock "S" factory intake. But yeas the RPM and RPM heads will be fine.

I cannot stress enough to be careful with the cam, you do not want anything single pattern. You really should talk to brent, he does custom cams, it would probably be cheaper than a shelf cam.

You do need to get into the motor and see where you are at, if you get eh heads off and find the cylinder walls or pistons are shagged you don't want to already own a cam based on 8.2:1 compression.

Also, i hesitate the mention this but a lot of 360's became 390's when the are sold, you cant tel them apart without gettin into them (you can measure stroke trough a plug hole.) And you likewise don't want a cam you picked based on 390 CID when you actually have 360 CID (decode vin on truck and then verify it is still ass 390.)

As for the EFi, you can do the Sniper 2 without an intank pump, check out my thread https://www.fordification.com/forum/vie ... 7&start=30 starting about page 3 for how i did it, note many of the things we talk about there on the sniper 1 are fixed on the sniper 2.

[DuckRyder]

Also,

Might want to pick up both of Barry R's Books, Jays book and the Steve Christ book.