I am going to rebuild my 7.5L in my 93 f-250 and was wondering if anyone could help me with my thoughts of running a Crane Hyd. roller cam or a Comp Xtreme energy Hyd. flat tappet in my truck and if the roller is worth the extra cost

 

I know there are as many different opinions as people. But my thought is that the roller cam is the way to go. One big reason in my mind is that today's oils are designed for roller cams. Many have had trouble with flat tappet cams because of several reasons but one being OIL. They have taken the zinc out.
I'm not going to go into a big discussion about it. But I believe if I was rebuilding my 460 in my 86 F250 4x4 I would pay the extra for a roller cam. I think the roller cam is the best for everyday street use. Now if I was to be building a race motor then I might have to use the flat tappet cam to get what I might want.
That is my two cent on this topic. I'm sure you will get many more opinions with differing views.

Craig

 

Thanks for the thoughts, i was leaning towards the roller cam and now i am definately going to use the Crane roller cam

 

Have you looked at the new hydraulic roller "Thumper" series from Comp? And imo, if you can afford it, go roller. It's one of the swaps I have planned over the winter on my 460 (along with the FAST efi system)

 

I was also leaning towards keeping my EFI instead of going to a carb when i rebuild and was wanting to know more about the Fast system you mentioned, i wanted to use Edelbrock aluminun heads and a retro fit roller cam and dump the smog stuff. What do i need to do to my trucks computer to get this to work and will the intake manifold bolt up to Edelbock heads. I know nothing about EFI and was looking for a point in the right direction

 

I am partial to the Trick Flow A290 heads myself. When I started on the motor it was originally a 429 and I spent a fair bit of time on the phone with various manufacturers, and honestly, Edelbrock was one of the worst to deal with. Asked them about their heads and about all the tech guy could say was "uh.. they're made out of aluminum..." No information on flow numbers, etc. Trick Flow as the exact opposite, had the information on flow numbers at various lift rates, alloy mix, etc also, when I ordered my A290's they were on backorder. When they were finally done with them, instead of just shipping them to Summit Racing (where I had ordered thru) they called me up and since I lived in Ohio at the time, asked me if I wanted to come by and pick them up directly from them, since they didn't know where I was on the list with Summit to receive a set. I said "sure" and drove an hour up to get them. While I was there they showed me around the shop and answered questions and were just a class act. Ever since then, I have been a fan of their products.

Comp Cams (they also own FAST) has also been a good one to deal with, whether it was getting goodies for my C6 through TCI (another Comp owned product) or talking duration and timing specs to get 12:1 to be happy on pump gas, to swapping out a cam that had wiped a lobe on another 460 that a friend had, they always had the information to answer your questions and backed their products 100%.

Anyways, the stock EFI intake will not match to the aftermarket heads. Edelbrock has a intake (Victor series) that has the bungs in place that you can machine for putting injectors in. At that point you could use a Holley 950 Commander to control the whole thing. I have also seen some threads somewhere where guys have done modified EEC's to control the whole thing.

As for TBI style injection, one of the reasons I was looking at the FAST vs. the Holley setup is the Holley TBI needs 15psi, so to use the in tank pumps you need to run a regulator to cut the pressure down, also the Wideband O2 sensor is an upgrade, whereas the FAST system is set to take the hi-pressure (45psi) feed to begin with and also comes with the Wideband O2 sensor to begin with.

 

It seems after all the research i have been doing on EFI that it appears to be a rich mans toy when it comes to the 460, after buying aluminum heads, a roller cam set up, a complete rotating assembly and having the motor rebuilt i could not see paying an extra 3 grand on a EFI system when i could put that money towards building something way cooler than a 93 F-250. I think i will go with a carb set up and all the crappy issues that come with them cause EFI is looking like one big expensive headache

 

Thats true.... looking at 1700 for the FAST system I want. That being the case, Aero makes a regulator that you can plumb into the existing fuel lines to cut the psi down for a carb, use a throttle cable from a late 80s carbed 460, and take the fuel pump relay, disconnect the ground wire from the ecm and hook it up to a constant ground, the fuel pumps will still have the safety switch working, and will run all the time the key is in the RUN position.

 

The FAST system you speak of is it everything you need to get started and does it take care of the computer and will aftermarket alum. heads bolt to the intake

 

The FAST system has it's own ECM, and all you need to do is plumb it into the existing supply and return lines. It has a ECM controlled ground wire you will need to hook up to the fuel pump relay, and also controls for electronic fans, etc. Bolts right on top of any 4bbl intake, so you can use the aftermarket heads too.

Mine will be going on top of a Weiand Stealth intake.

Heres the link for the .pdf file with the installation instructions

http://www.fuelairspark.com/Instruct...-%20EZ-EFI.pdf

 

Thank you L. Ward for clearing that up for me, after what you told me i definatly am gonna use this FAST system when i rebuild

 

Unless they started up again ? Crane went out of business some time ago. I wouldn't buy a nos one as there would be no warranty & no customer support.

 

They started back up again. S&S Cycle bought into them. That being said, while I am partial to S&S components on Harleys I play with, I am still partial to Comp Cams for my V8's

 

One thing, BBFs tend to not like hyd roller cams (solid roller yes, hyd roller no) I believe it's due to the canted valve and pushrod angles causing the need for to low of spring pressures to keep from collapsing the hyd lifter and thus can't control a roller lifter on a heavy profile lobe above 5000rpm .

Personall solid roller or just stay with a flat tappet, you will be happier and a LOT less money (and probably be able to get a lot more rpm out of it if you want o)