The truck: 86 f150 4x4
Engine: stock block .40 over, edeb heads 6037 1.9 1.6 and matching edeb truck efi intake.
Converted over to a roller cam set up using the stock H.O. mustang cam "it was free"
Dynomax long tube ceramic headers 1.5 pri 2.5 collectors 2.5 exh no cats.
Mass conversion using a9p ecu, pro m 75mm air meter calibrated for 24psi injectors
Msd Ignition.
stock rockers.
transmission. Aod, B&m shift kit, 2000 to 2200 stall from an svo mustang
Tires 32 1150 15 Bfg all terrains. 4.10 rear gears.

OK here is break down of times and mods at the drag strip. the very first time i went i had 3.55 gears and did not have the intake, roller cam, or pro m stuff but did have all other items listed.
i went the best of 15.9 @ 85 mph 2.3 60ft
With just the pro m and 24psi and 4.10 It went 15.5@86 2.2 60 ft.
After the Cam/intake best it went 15.2 @89 mph and a lousy 2.4 spinning out of the hole. i did 60ft better with the Rv cam I had before but have midrange and top end with the H.O.
I know i probably have 2 to 4 tenths just by losing the BIG tires and maybe another 2 tenths with a 2800+ stall but thing i am probably leaving a good amount of HP on the table. I would like to get 13.9 to 14.1 out of the truck but i know i am gonna need some rpm to get so please suggest away!

 

Moved to engine forum.

 

Did you give the HO cam a 2 degree advance when you installed it?

 

No I put it dot to dot

 

I haven't tried it with this cam, but I know several in the Lightning community that have done this. It'll move the powerband down (lower) about 200 RPM, 4 degrees advance will move it about 400rpms lower.

 

What size engine is this?

That edlebrock intake is probably a restriction.

 

Its a 302, do you really think the intake is restrictive?

 

I'm in the same boat right now...I'm building a 347 stroker and have been cam shopping lately. There are a number of standard grind cams out there, all with very different specs. So, being the geeky engineer that I am, I've been creating an Excel spreadsheet that tells me the stroke, piston velocity, and piston acceleration, as well as overall cylinder displacement as a function of crankshaft rotation and time (both). In the end I hope to have it tell me how much CFM or air/fuel I can get using different cams, intakes, carbs, etc. That way I can "design" my own combination. I'll let everyone know how it works. I'm sure there is some software out there but I haven't looked too hard for it.

 

If you really want the best cam for YOUR combo, then go with a custom grind. Several cam companies and even some machine shops can grind you a cam. It's a bit more expensive, but it takes the guess work out of cam selection.

 

I do.

The edelbrock intake is designed for stock or relatively stock 302s. When you change the heads and other parts in order to increase airflow, you push the tq higher up in the RPM band. That edlebrock intake is designed to do the opposite, it's ment to be used with an idle-5500 rpm range and it's long runners are really for a low RPM torque style engine. Unfortunately, they don't advertise it very well.

I've got a 393 which I bought the 351 style edlebrock truck intake for, and came to find out it was really not able to be used with the engine because it's intention was totally different. I thought the intake would be able to handle higher hp but with a rating of power from idle-5500 rpm on a 351, it dips to idle-5000 rpm with a 393. It's basically a mismatch of parts.

It was way more restrictive than in your case, but that intake isn't the optimal choice. You'd probably be better off switching to a mustang style intake instead. Depends on what actual version of heads you have. What type are they? If they're really mild than the truck intake would be ok, and you'd want to look into a 4x4 style low rpm tq cam but in consideration of the fact that you have those heads and not stock ones. I'm assuming you're looking to retain as much low end torque as possible. The eddy intake is good for that, but if the heads flow too much than it's too much of a mismatch.

I'm going to revamp my 393, possibly with AFR185s for heads, and a trick flow r series intake, able to support 300 cfm per cylinder (the intake outflows the heads slightly). The heads flow 282 cfm.

You can get a custom cam or save and get an off the shelf cam. There are a couple very popular cam designers around that I can forward you their contacts, but I'm not so sure you need a custom cam. It's your choice really, when you go with the custom cam you'll know a professional chose the perfect cam to maximize your combination. If you want to get an off the shelf cam, you'll save money but will have to put in the time to learn and make a good selection. It's not something you wing, it's probably the most important decision in the engine build. Only a cam designer knows how really complicated it gets.

 

Bout time you let that thing breath!

 

they are the edelbrock 6037-9 with the 1.90 1.60 exh valves. They are advertised to flow some thing like 240+/- cfm a .550 valve lift. For now I would be extemely happy if could get this tank to go 13.9 14.1. For now I am going to get the tranny rebuild, 3000 stall converter, and some 275 60 15
tires. I know I can drop my time alot just by doing that.

I wonder how much air flow this intake flows? I could not find any info prior to purchasing it but now im stuck with it so I have to make the best of what I have.

I have seen posts in the corral forums about alot of guys sticking with the stock cam + 1.7RR . it seems to be a really good combo for driveability and power. I have even seen combos making around 275 to 295 rwhp with a stock cam and an ton of torque. that is the reason I got this cam, free, a roller and good torque.

 

Yeah you could use a stock mustang cam but now that I have a better idea of what you're looking to do I'd suggest a different intake - don't have to but you're leaving power on the table from it.

But which heads are the 6037? I tried to look at the edelbrock website but couldn't put the # to the head. I'm not aware of which head it actually is, like performer 5.0 or RPM, etc. I can look up the flow numbers when I know what heads they are.

Look into it some more...you can always sell it on ebay and buy what you need (that's what I had/have to do).

Yup, but still costs too much $$ for me to do as of yet. That'll be awhile.

I might try to run the heads I have w/ that trick flow intake and the cam I have - it should help out and making some changes will probably get me around 60-80 more hp...but I duno what it's going to be like with small heads/cam and a large intake - it's still a mismatch.

I almost had my hands on the desktop dyno program but it fell through.

 

Are you talking about the 60379's? Those are edelbrock performer 5.0/5.8's...

They flow 223 at .500 lift, and 226 at .600 lift on the intake...
They flow 168 at .500 lift, and 175 at .600 lift on the exhaust...

Call up edelbrock and see what they have to say about you using that truck intake, or e-mail them.

I did, they even said no way for me.