Well Im about to finish up the build on my 5.0 thats going in my 94 F150. I am running flat tops, E7 heads with the exhast ported and EGR bumps removed and pluged in the back of the head, a summit 204/214 .448/.472, ported lower intake(nothing major just gasket matched and smothed out the harsh corners and unshrouded the injector ports), I will port the upper tomorrow (same as lower just a little smoothing and gasket matching), headers, egr block off on TB, smog pump eleminator pully, and I will be running an electric fan and flowmaster exhaust which is on the truck already. Shortly after I will get a Mallory or accel coil and probly an msd box. I am thinking of getting a hypertech chip for the computer (not one of those resistors but a chip or modjule deal) but I havent herd anything about them. Has anyone run any of them?

I am second guessing myself on cam selection. I think I should have went with the next step up in cams but I think I will be pleased with this setup. I may run some 1.7 roller tip rockers later on though. What kind of numbers do yall think I will be pushing, theoredicaly of course.

 

no one wants to chime in huh. No coments? nothing?

 

I'm running a Flowmaster exhaust, Pace Setter Headers, just rebuilt engine. Getting ready to install electric fan, MSD TFI Blaster Coil, MSD 6A Control Box, MSD HELI-CORE wires, MSD Cap and Rotor, MSD Harness Adapter Kit for TFI. Let you know how it goes.

 

no comment-!!

 

i think with the headers cam and 1.7 rockers.. and ported heads maybe you will se 300hp

 

Long as she pulls good Ill be happy.

 

we'll just have to wait and see.

 

ohh yeah she will pull allright


mine with stock internals and custom intake and 3' inch exhuast... with timing at 14 BTDC* and msd everything pulls hard already imagine with cam headers rockers and ported E7's

 

I have this cam in the shop and thought about trying to run it instead. It may be too much for the computer though. What do yall think?

280/280 advertised 224/224 at .50 .468/.468 lift and 112 lobe sep. Do yall think this would be a better cam choice or keep the current cam which is 204/214 .448/.472lift and 114 lobe sep.



<TABLE cellSpacing=0 cellPadding=0 border=0><TBODY><TR height=16><TD width=97>PART </TD><TD width=166>*364381X</TD><TD width=108>ENGINE TYPE:</TD><TD width=240>HYDRAULIC SPECIAL</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=0 border=0><TBODY><TR height=17><TD width=59>


</TD><TD width=64>GRINDN</TD><TD width=491>HIT-280</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=0 border=0><TBODY><TR height=16><TD width=34>


</TD><TD width=92>ENGINE </TD><TD width=490>1962-UP FORD-MERCURY V-8 221-302 CU.IN.</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=0 border=0><TBODY><TR height=16><TD width=124>


</TD><TD width=491>(EXCEPT 1982-UP 302 H.O.)</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=0 border=0><TBODY><TR height=16><TD width=28>


</TD><TD width=134>VALVE SETTING: </TD><TD width=86>0</TD><TD width=76>EXHAUST</TD><TD width=134>0</TD><TD width=156>HOT</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=0 border=0><TBODY><TR height=17><TD width=28>


</TD><TD align=right width=124>INTAKE @ CAM</TD><TD width=9>


</TD><TD width=75>2925</TD><TD align=right width=57>@ </TD><TD width=10>


</TD><TD width=108>468</TD><TD align=right width=110>ROCKER ARM </TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=0 border=0><TBODY><TR height=16><TD width=28>


</TD><TD align=right width=124>INTAKE @ CAM</TD><TD width=9>


</TD><TD width=75>2925</TD><TD align=right width=57>@ </TD><TD width=10>


</TD><TD width=99>468</TD><TD align=middle width=138>1.6</TD><TD align=right width=110>ROCKER ARM </TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=0 border=0><TBODY><TR height=12><TD width=406>


</TD><TD width=210></TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=0 border=0><TBODY><TR height=23><TD width=22>


</TD><TD align=right width=40>LOAD</TD><TD align=right width=58>CLOSE</TD><TD width=2>


</TD><TD width=80>95</TD><TD align=right width=49>LBS </TD><TD width=80>1.703</TD><TD align=right width=20>O</TD><TD width=90>1 45/64</TD><TD align=right width=42>MAXIMUM </TD><TD align=right width=42>RPM</TD><TD width=150>5500</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=0 border=0><TBODY><TR height=22><TD width=70>


</TD><TD align=right width=52>OPEN:</TD><TD width=1>


</TD><TD width=80>252</TD><TD align=right width=49>LBS </TD><TD width=174>1.263</TD><TD align=right width=42>VALVE </TD><TD align=right width=42>FLOAT</TD><TD width=150>6500</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=0 border=0><TBODY><TR height=15><TD width=24>


</TD><TD align=right width=72>CAM </TD><TD width=114>


</TD><TD align=middle width=52>OPENS</TD><TD width=51>


</TD><TD align=middle width=53>CLOSES</TD><TD width=23>


</TD><TD align=middle width=69>MAX LIFT</TD><TD width=24>


</TD><TD align=middle width=67>DURATIO</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=0 border=0><TBODY><TR height=17><TD width=20>


</TD><TD align=right width=17>@</TD><TD width=112>0.05</TD><TD align=right width=49>INTAKE</TD><TD width=0>


</TD><TD width=98>4.0 BTDC</TD><TD width=100>40.0 ABDC</TD><TD align=right width=52>108</TD><TD align=right width=22>°</TD><TD width=28>ATDC</TD><TD align=right width=53>224</TD><TD align=right width=36>°</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=0 border=0><TBODY><TR height=17><TD width=24>


</TD><TD width=72>TAPPET</TD><TD align=right width=30>LIFT</TD><TD align=right width=68>EXHAUS</TD><TD width=7>


</TD><TD width=96>48.0 BBDC</TD><TD width=102>(4.0) BTDC</TD><TD align=right width=50>116</TD><TD align=right width=21>°</TD><TD width=27>BTDC</TD><TD align=right width=53>224</TD><TD align=right width=36>°</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=0 border=0><TBODY><TR height=16><TD width=112>


</TD><TD width=504>FIRING ORDER - 1-5-4-2-6-3-7-8</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=0 border=0><TBODY><TR height=22><TD width=183>


</TD><TD align=middle width=236></TD></TR></TBODY></TABLE>

 

Is your truck mass air? If not it won't run that cam at all, if it is it'll run, but it'll be a complete dog below 3000rpm... way too much duration for a truck motor.. unless all you do is drag race.

 

I'm thinking a lot more research...contact a good cam grinder, let them know your expectations, gearing, induction, exhaust, chip etc...they will tell you what you need, but first you need to know what you want

 

I have done my research and even talked to comp and crane about there cams for this application. Both manufactures recomended a cam almost idenical to the cam I chose, Only the summit cam was a fraction the price compared to the "fuel injection cams". I was just wondering how the computer would hold up to the 224/224 468/468 cam thats all. I am running to 204/214 448/472 cam.

True that is alot of duration but for the sake of argument the tighter lobe centers (though it is only 2*) will lower the power band, also I could advance the cam 3* or 4* and lower it even further. I was just currious how it would do. they say these motors like to rev anyway so it may be a good thing, well for street but not for towing. I fiqured it would complement the short stroke big bore more so than the one I selected, in a carb set up of course. Ohh and yea its a MAF.

Hey ssindey, I have found that most, not all but most cam techs that work for major cam companys are idiots to say the least. I have spoken with several techs on several occations about different projects and I have only spoke to 1 individual who knew what he was talking about. He worked for comp cams and ground me a custom cam to go in my 91 chevy. Opinions are like butt holes, everyone has them and most of them stink, and having said that, cames are the most opinion based part of a build. If you dont like my choice in engine set up You dont have to ride!

 

No.. smaller LSA means more valve overlap which lowers dynamic compression and raises the powerband.

The 5.0 makes better power in the upper rpms, but the heads don't flow hugh numbers so there's only so much you're gonna get anyway. The HO cam produces the widest powerband in this motor, and that's with a 266 advertised duration(211@050"), but the HO motor is weak at low rpms in a heavy truck as reported by several here who have swapped one in. Replacing the whole top end with GT40 parts produces more high rpm power but weakens the low rpm even more. FMS cams like the B303 are a further step in that direction.. there's no beating the physics here. There's nothing wrong with building a motor that works best between 3000-6000rpm, just be prepared to supply gears and maybe a high stall converter to go along with it.

In defense of the guys at the other end of the phone at a cam company.. his suggestion is only gonna be as good as the information provided. If you ask for the max HP for your engine combo he's probably going to suggest a cam that does best at 6000rpm. But if you ask for the most power for street applications in a 4500lb truck you'll probably get something that looks a lot like the Crane 35-255-5. I bet most people phoning in are looking for every last pony they can get out of their combo for race applications, so it's easy for a tech to misinterpret the 1 guy in 100 that asks for something different.

 

for the benefit of all, thanks...

 

What is your piston to valve clearance with those cams? How much closer is going to get with 1.7 rockers?