Hello every one.
I was wanting to upgrade the cam in my truck its a 79 150 she has a new 302 with a 4bbl holley and manifold. All I was wanting to do is cam the engine and install some roller filters. But I know very little about these side of the engine does any one have any Ideas or have done any thing like this before whats a good brand to go with? any help would be awesome thank you =)

 

Call Comp Cams. Tell them what your doing and they will pic the best cam for your application. There very helpful!!!

 

AWesome thank you very much I will give them a call.

 

No problem.
I think you can get a lot more power out of it with a better set of heads. Might want to look into that also.

Merry Christmas.

 

Well I've thought about heads but I really don't have the money for aluminum heads, for the price I could get a long block 351 or a Edelbrock EFI kit. I really don't see the point in those heads other then weight, other then that to me its a waste of money IMP

 

You have no need for aluminum heads. It's a truck...lol
But the 302 heads are very restrictive. They flow like crap.
With a set of ported heads with bigger valves would be worth every penny for the extra power they would make!
You could probably even go with a set of ported 351 heads.

 

Just to add to what Phil said, even a set of E7TE heads from a later motor would help you a lot, your motor is running a very low CR right now because the stock heads have hugh combustion chambers. Combine that with a decent RV cam and you'll see a major boost in power.

 

Oh really Awesome see this is the stuff I know very little about. Like what are E7TE heads? what does RV cam mean? i'm sure it doesn't stand for Recreational cam This is the stuff about engine I want to know, one of my goals is to build a engine I just got tuning holley's down I've read my Haynes front to back and it doesn't sound to to hard. the stuff I dont know is what kinda heads what type of cams and pistons I'm still learning all this. Any more help would be great thanks

 

Hello again. I found two good cams from Comp and Crane I was just wondering which would be the better to go with the comp and crane are just a little different in numbers..
The crane is Adv. Dur.: 266°/274°
Dur. @ .050'': 210°/218°
Lift: .456''/.472''
Lobr Sep.: 114°

And the Comp is
Xtreme Energy XE256H Hydraulic Flat Tappet Camshaft Only
Lift: .477''/.484''
Duration: 256°/268°
RPM Range: 1000-5200


thanks

 

RV does indeed stand for Recreational Vehicle, it's a broad category used to describe cams designed for moving heavy loads or in other words a broad powerband starting at low rpms. The cams you found would fit this category.
E7TE is a Ford casting number for engine components including cylinder heads. It's found on the head gasket side near the intake ports. The E7 translates to '87 the year the casting was first used. This casting is found on most 302 and 351 motors produced after this.

 

I don't know about the Crane, but the Comp is definetely a flat tappet cam and a good one. Did you decide against converting over to roller lifters? I'm not saying that's it's a bad thing, just an observation. The E7TE heads aren't the most desirable for performance, the combustion chambers are large and the valves are on the small side. You want some DO (70) or earlier heads from a 351w or better yet, some GT-40 heads if you can spend a little more.

 

The Roller lifters were to much it would have been close to a grand for the lifters and cam and if I'm going to spend that much then i'll just get a bigger engine. I know where I can get some 351 heads what exactly would puting 351 heads on a 302 do? and would I have to get a new manifold? I found a site where I can get a 351 long block for 1,200 bucks 7 year/70,000 mile Warranty its just I dont have the time for a engine swap right now so i'm just trying to keep it simple =)

 

The 351w heads have larger valves and ports and breathe a lot better. The more air you can move through an engine the more power to a certain degree. The stock version 351w heads can be improved by porting and polishing and installing bigger valves, but that can get as expensive as buying ready to run aluminumn heads. Combustion chamber design and size varies by year, as does valve size, some more desirable than others. What is the code of the heads you are considering buying?(E7TE, DOOE, ect..) It will always be a letter, a number,then 2 more letters.You will be able to use the same manifold, the only thing you may need is different head bolts or sleeves for the 302 bolts. (the 351w uses larger dia. bolts.) I haven't personally done this , so anybody else know for sure?

 

Hmm. Sounds pretty cool, but I think i'm going to run this 302 the way it is for a bit longer, I'm going to upgrade to a 351 or 400 here pretty soon many in the summer or a bit later, I kick my self for paying some one to rebuild my 302 the money I spent on this engine I could have got a 400 long block for a hell of a lot cheaper then the build costed me. but for the time being I'm just gonna get the cam or I might just get a ron francis kit and start building this thing from the inside out now that i've had some more time to think about it and see that the cam really wont do much to this 302 still not sure yet..

 

If you go with the 351M or 400M you will need a different trans and engine mounts much different style block than the windsors. You can tell the difference by the thermostat housing is on the block instead of the intake among other obvious differences. If you have a manual trans you can just change the Bell housing. The 351C, 351M, 400, 429, 460 share the same bell housing pattern. 351M and 400 are great engines just a little thin walled on the cylinders. Watch if you have to overbore it wouldnt go much over .40