I agree with Street wize. Calle Comp and same run around from some high school kid on the phone pretending to know something about engines.
Called Cam Motion and liked what I heard, but endced up calling several more people. Really liked Tim at Bullet Cams. His service was really fast and price was better than others.
SO I VOTE BULLET

Cam Motion gets my vote.

Usually speak with Kip, and he is super knowledgable.

Have used others in the past, but Cam Motion definitely gets the nod from me lately.

i have had dwayne spec two cams for me, both comp's and both exceeded my expectations.

Dwayne......mighty smart guy

You need to talk to someone who knows those engines in particular. Listen to Leon.

Excellent question. Many feel that they will benefit more from a special grind verses off the shelf stuff. Just not true, especially if you are using off the shelf parts for everything else and building in the 550 or under HP range. On the second part of the OP's question, it is always smart to get a few different cam vendors opinions when you are looking for a custom grind. Fill out their web sight form and send it in.

This IS the problem. If you don't flow the intake system, don't know all the numbers then off the shelf is probably good enough. But no 2 engines are ever exactly alike.

What I can't grasp is why is it a big deal to pay the same (or even a few $$$ more) to get a cam that is spec'd to YOUR cmbination. If you don't think it's a big deal, make up 3 engines, all with slightly different specs i.e. one with a dual plane, one with big headers and one with 1 point more compression. Then call and get cam grinds called out for each one. Something there to learn.

Under that scenario, all engines should have a special cam?? BTW, it ALWAYS cost more for a special grind cam. I, actually am running a special grind cam from Comp due to my combination ( blower motor, big heavy car, etc. ). When I purchased the cam A few years ago, I filled out the cam form from several cam suppliers. At the time, I was running some cast iron heads that flowed in the 260cfm range. About a year ago I up graded to fully ported aluminum heads that the supplier had flow numbers on - 299 cfm at .600 lift. Everything else stayed virtually the same. Sent a new cam form in with the head changes to the same guys I originally sent to. Got one no reply. Comp replied with a "suggest no changes". Other cam response was " we can't supply anything better than what you are using". Point I was trying to make is, in many cases, that "I need a special cam" is over blown and more of a comfort zone thing for more $. Many cam sellers offer in the range of 15 different off the shelf grinds for any particular cam type, flat tappet, hyd, roller, etc. Covers a lot of different engine combinations and they have already done the work on the matching valve train components to keep many of us out of trouble. I can surely ( and don't call me Shirley ) see special grinds when you are making large HP with many very specialized parts. That's not what I am talking about.

A few years ago I called Comp Cams for a cam for my 360 with stage 2 ported Hughes heads that flowed around 260 cfm and over 12 to 1 comp. They suggested the same cam they told a friend of mine he needed for a stock 440. It was a .520 lift hydraulic cam. I just said thanks and hung up.

There are a lot of different ways to answer your question and it all depends on how serious of an engine that you're working on. For example, picking the perfect lobe is one question but finding someone who can manufacture that lobe might be a different question. Also, some cam companies have really big lobe families while other ones only have a few lobes to pick from.

Anyone on here that thinks they can out design that engine as it was delivered is silly--it was not designed as a drag engine so it is all top end but...they make killer drag engines with the right converter--heading out and thinking that you will make a couple of changes and get a new cam and have the hot lick as compared to what top Nascar guys paid azzloads of well earned cash--testing expensive parts 24 hours a day on three dynos per shop for over 5 years on the same engine is just crazy--you need to be putting in an application at Penske
I bet it slows down with changes--- unless you reach out to P5 gurus and do exactly as they say-
All that being said Bullet first and always--Cam Motion--home of the baddest solid flat tappet cam for big block mopars ever ground if you want bigger than Mopar .590

Ok, after hearing your guys opinion and talking to a few others. I'm going to invest in another converter.

Guys are running mid 4s in 1/8 with only a 250 shot, with stock NASCAR pistons and cam.

I've heard many times you can't spray them, you'll melt the rings right off. 75 passes and running with 250 shot, rings are cheap lol

Well, that ends this thread.