makes me feel great that comp ground my cam atleast AI checked it out before they sent it to me.

 

Pretty simple to figure out wha i meant.

PTV is also controlled by where the Cam Gear is indexed correct? Did he have any retainers break before the PTV issue or maybe a spring fail?

It seems like a CNC machine with a programmed logic would have a hard time not producing the correct lobe profile.

I might be wrong as i have only built motorcycle engines.

 

Well all I know is that he figured that the cam wasn't ground right which isn't a good assumption imo.

 

which is why you should always check PTV clearance when installing a cam...or get pistons cut deep like mine and never worry about coming anywhere near PTV issues no matter what size cam

 

bgray hey buddy I just wanted to give you something to check with the intake before you give up on it. I put one of these intakes on my truck and was having about the same problem just not as bad. But I remembered when I put my injectors back in the bottom of the intake they were crazy tight to get in. So I took it back apart and sure enough it had cut 6 out of 8 lower injector o'rings. So I ended up just finding the correct size o'ring myself and fixing it. Not saying that is your problem but its something to look into....

 

It was about 3 years ago
I narrowed it down to the bad comp batch. All the cams I personally saw with f'ed lobes from comp were from the same timeframe. Other comp cams I installed later with the same springs haven't had a problem. I won't be going with comp anymore for my grinds, probably isky from now on.
You'd be surprised how screwed up a lot of their stuff is. The cnc machine is only as smart as the person programming it and putting the blank in the fixture. I've never had one cut wrong but I know of more than one person personally who had one cut wrong. I bet there would be a lot more cases if everyone actually degreed their cams.

 

I've yet to see one of their truck intakes NOT leak without a good deal of work. It is unfortunate.

 

This is something i wish i would have known before i ordered but i google searched and never really found any complaints out there.

I am putting it on one of your 404ci motors that currently makes 470rwhp with a 78mm setup so i hope mine won't too many issues..

 

Well that's good to know...I've been leaning towards Crane myself (not that I have the dough to buy anything), and Manley Nextek springs...gonna look at Isky's site now also.

Is Lunati owned by anybody else and/or who grinds their cams? Are they done in-house? I know that they used to be owned by Holley but they sold them about 3 or so years ago...

 

Well I was looking forward to getting one of these Intake but not so much anymore. Has anyone else had any problems with their Intake?