70 RS Camaro

[GregWeld]

I always have this conversation with the engine builder -- because the cam is the brain of the engine - but it has to work in harmony with all the other factors of the motor - compression (static) - head size - desire... i.e, torque or HP - and where do you want that. Power brakes or not... etc.

SO ---- LSA -- WIDE makes for smoother idle and better vacuum... NARROW - makes lumpy and low vacuum

Lift is about so many variables -- but "DEPENDS" -- valve to piston clearance.. rocker arm ratio... valve springs used - street daily driver - or a drag racer.

ME... I'm all about bottom end grunt and great drivability... so I like moderate lifts with moderate duration - and WIDE LSA.... Moderate allows the valve train to live... Moderate duration allows me to enjoy the car in todays traffic with the A/C running.... and the Wide LSA is good for my MAP sensor with EFI and 8 stacks...

Todays cam profiles allow a guy to tailor make / order a cam that can do it all....

So - really - the cam depends on compression - head size - and use... and that all needs to be PLANNED TOGETHER before the very first part is purchased. Then toss in the gear ratio - auto or stick - converter loose or tight... so plan a plan and then plan your plan with the man.... that's building the engine. And even if he's not assembling it -- he's built enough of 'em to be a good guide on the total combination.

[70rs]

Thanks again Greg. That sure gets me going in the right direction.
I have been reading a bit on cam selection and when the time comes to purchase one I will be better prepared.
I really appreciate the input.

[GregWeld]

Here ya go.... sweet dreams!


The THUMPER...

[OLDFLM]

Cam recommendations and grinds are like... well you know...

Decide what manners you REALLY want the car to have before you buy!
What are you REALLY going to do with the car 99% of the time?

Call the cam help lines, discuss with Greg and others who have more experience than both you and I, and then make your purchase.

[70rs]

Thanks Ty,
I had a really good conversation via email with Greg yesterday about cam selections. I also found several really good articles online. Between Gregs help and the reading I am still doing I feel pretty good about choosing the right cam when the time comes.

Based on how I will use the car and what I really want out of my engine, the 268 from the XFI line at CompCams looks like a contender.
I'm still learning. I have a while before I need to buy a cam. In the mean time I am having fun reading and talking about it.

Thanks again to everyone for all of the advice, help and encouragement.

[tones2SS]

Great to see the updates Eric.

[68400BIRD]

Kind of quiet over here Must be some top secret progress going on.

[70rs]

No, nothing top secret. Lol!
I have been getting my dads shop finished inside. At least enough to move the car into it. That should happen in the next two weeks if everything goes ok there.
I have also been gathering parts and tools, trying to get a workstation set up and generally getting organized for this. I hate getting half way into something only to realize I am missing a part, tool or materials for that specific project.
The motor is getting close to finished though.

Progress is still being made, just not much worth posting about.

Thanks for checking in.

[Ron in SoCal]

Originally Posted by 70rs

I hate getting half way into something only to realize I am missing a part, tool or materials for that specific project.

Yeah, good luck w that E...

[70rs]

Originally Posted by Ron in SoCal

Yeah, good luck wthatE...

I know, it's hopeless. But at least it's fun to dream right?