Comp XE295HL cam and spring combination

[91r/t]

Maybe, but it's a little hard to think a cam with 82° overlap would idle at that vacuum level, even at +500 cu in. What is the idle rpm?

Here it is running..... it has a little more lope in the video because it was a tad rich at idle but it still bumps around pretty good. I was confused myself about the vacuum considering. It also is quite noisy in the valvetrain which was a characteristic of this cam from people. I added it all up and said wtf maybe it is the cam in the car?!?

 

[91r/t]

you can't check lift at the valve with a hydraulic tappet; especially with valve spring. it must be done with a solid tappet and checking spring. the more you rotate a hydraulic lifter with a valve spring the more it bleeds down. to stay pumped a hydraulic tappet must run in pressurized oil. even some checking springs can start to bleed a hydraulic tappet with multiple rotations of the engine.

Kinda figured that when I saw the indicator bleeding down a bit when I let it sit after rotating the engine around. I don't pound on the car that hard so the chances of me breaking a spring is slim. Maybe this summer sometime I will throw the recommended springs in the car just to be safe. 440 source claims you can run this 295HL cam (purchased from them) with the edelbrock heads and springs, but maybe I will call there tomorrow and talk to their tech guys about some stuff and grab the springs just to be safe. $125 bucks is cheap insurance for a 10k plus stroker right? Appreciate all the info from you guys. I've built engines from scratch and do it all, but the intricate details you guys can provide is a lifesaver to me. Especially when I take over a crazy engine combo such as this without much knowledge of the internals. I'm lucky he kept most of the receipts so I can atleast put the pieces together from them. Thanks again everybody!

 

[wyrmrider]

Quite a few threads but from what I ahve seen those happy with the 285-295 cams were stick shift 3.90 gear cars
those with automatics and 3.23 BVVC
Those with low compression BVVVC

 

[lewtot184]

even if you have the smaller 285hl the 924 spring is recommended. the true rocker ratio with a hydraulic tappet is the killer. hydraulic tappets need more margin for error to be safe than a mechanical tappet.

 

[wyrmrider]

drive it and enjoy it
determine any changes you want
who cares what the cam specs are if they work 4 U
springs should be good for almost any catalog hyd cam
next time you have the intake off you can check with a solid lifter
any old slant six lifter will work

 

[91r/t]

even if you have the smaller 285hl the 924 spring is recommended. the true rocker ratio with a hydraulic tappet is the killer. hydraulic tappets need more margin for error to be safe than a mechanical tappet.

Yup that's why eventually I'll throw the stiffer springs in it. I don't wind this thing past 4000 RPM ever so going to get ice cream and dinner should be fine until then. If it were a race motor spinning the RPM's I'd worry more.