gigas

Hi there..i just got a few questions for you guys out there who knows about cam selection...i sended an email to comp cam asking for a cam with my set up and this is the responce i got:

SPEC CARD INQUIRY

PART NUMBER 12-422-8
ENGINE SMALL BLOCK CHEVY 265-400
GRIND # CS XR270HR-10
DESCRIPTION
INT EXH
VALVE ADJUSTMENT HYD HYD0
GROSS VALVE LIFT .495 .502
DURATION AT
.006 TAPPET LIFT 270 276
VALVE TIMING OPEN CLOSE
AT .006 INT 29 61
EXH 72 24

THESE SPECS ARE FOR CAM INSTALLED
AT 106 INT C/L
INT EXH
DUR AT .050 218 224
LOBE LIFT .3300 .3350
LOBE SEPARATION 110.0 INT MASTER ID
ADVANCE 4 EXH MASTER ID
RECOMMENDED CC VALVE SPRINGS 986-16

Now..my question is if this cam really is going to be a killer for my set up or is there another 1 better...I went to summit and i found it there and also it says they recommended this:
* Lifters: CCA-853-16
* Valve springs: CCA-986-16 (requires machining on cylinder heads)
* Retainers: CCA-740-16
* Valve locks: CCA-611-16
* Valve seals: CCA-503-16 (requires machining on cylinder heads)
I really dont get that part "requires machining on cylinder heads" what does that really means?? and do i really got to buy all those parts??And last...how much HP i will gain with this cam??
Thanks

gigas

Plz people..sorry about this but i decided not to go with this cam..reazon why is this :
"Stock valve train components are not recommended with the use of Xtreme Energy Cams. Imperative that valve springs, valve locks, retainers, pushrods, lifters, rockers and other related components be matched to the camshaft. Also requires thrust button and wear plate."
So i emailed back to comp cam and they send me the list of what i need and no way man...price go over 1k and thats not what i had on mind....

Now..if you dont mind telling me wich cam will be better for my set up i will appreciated...you can c my set up on my sig and here is the info on eng "The four-bolt block has a two-piece rear main seal and features 8.5:1 compression, a cast iron crank with durable LT1 powdered metal connecting rods, cast dished pistons, a hydraulic flat tappet cam (.383 in. intake/.401 in. exhaust lift with a 112 degree lobe separation), cast iron 76cc cylinder heads"...if you need more info just say so plz....Thanks

PS:I'm thinking on getting another set of heads so if you can tell me wich set up is best,do so

five7kid

iTrader: (14)

Before you came back I was thinking of saying not to bother with that cam with those heads.

Comp must have assumed you had an engine of a later vintage, so they recommended a roller lifter type. Get heads set up for a flat-tappet version of that cam (you'll still want the springs, retainers, etc.), and you'll be grinnin' from ear to ear.

84zeddd

With only 8.5:1 compression you really shouldn`t run too large
a camshaft,maybe a comp cam XE-256 or XE-262.

ME Leigh

I have to agree don't go crazy with the cam or it will be a dog.