allenwesley

you can see every thing eals i have done to my car in my sig. and im planning on stroking the motor in the future (after im done upgrading the drivetrane and what not) this is just to hold me over till then... i was wondering if its going to lope real good or if its a decent size? thank you

grind nomber- 268XFI HR13

Duration: 268/276
Duration @ .050" Lift: 218/224
Valve Lift: .57/.565
lsa: 113
Hydraulic Roller

Description

Part Number: Grind Number:
Lifter Type: Hydraulic Roller Lifter Engine Family: GM LT1 & LT4 350 C.I. 8 CYL. 1993-1996
Description: Hydraulic Roller-Good low end torque with exceptional mid-range power for 305 & 350 TPI applications Need upgraded exhaust & aftermarket chip.
Cam Family: XTREME Fuel Injection (XFI™) Hydraulic Roller Camshafts USING 1.6:1 ROCKERS
Specifications Intake Exhaust
RPM-Range: Valve Lash:
Valve Timing: Duration:
Lobe-Center Angle: Duration @ .050" Lift:
Intake Centerline: Valve Lift:
Lobe Lift:
Installation Notes
[2] Requires machining on cylinder heads.

[11] Lifters only, does not include lifter retainers or guides.

[79] In pre '95 engines part #3206 must be used


Valve Timing @ 0.006" Lift: Open Close
Intake


Exhaust BTDC ABDC


BBDC ATDC


Recommended Components
Complete K-Kit Cam, Lifter & Gear GK-Kit Small SK-Kit Cam & Lifter CL-Kit
K07-466-878 N/A N/A CL07-466-87
RPM1318-16
Rocker, Push Rod RP-Kit Lifter Kit Timing Set Gear Drive
RPM1418-16
875-1611 850-16 [11] 3207 [79]
1318-16 N/A
Rocker Arms Push Rods Valve Springs Retainers
1418-16
7940-16 7608-16 26918-16 787-16
N/A
Valve Locks Valve Seals Lash Caps Rev Kit
648-16
503-16 [2] 501-16 N/A N/A
Distributor Gears Stud Girdle RPM kit Spring Locator
N/A N/A N/A N/A
Cam Phaser Limiter Kit Spring Seats Camshaft Break-In Lube
N/A

allenwesley

i Searched for a sound clip and could not find one

kierstyn

iTrader: (5)

Dont know about that cam but i have the cc503 cam in mine and it sounds good. It pulls pretty hard and even harder on the spray!

ss.slp.ls1

iTrader: (36)

+1. That's the same cam I have.

Go back to Comp's website and look up:

Part#: 07-503-8
Grind #: 276HR-12

My95Z

iTrader: (8)

I'm not a huge fan of the xfi lobes, I've seen a few eat good valve springs b/c the lobes are so aggressive. Its comparable to the hotcam, only a little less duration, more lift, and on a 113 compared to a 112. So for the lope, it will some, but not a lot. Should make a little more power than the hotcam though.

You've got all the supporting mods I'd go a hair bigger.

allenwesley

Cool thanks for the info.. valve springs, i know this may be a STUPID question but valve spring, are they the spring’s under the valve covers... im positive they are, i just didn’t know if you were talking about something eals.. but the cam kit came with springs.. they should hold up right? you were saying the stock springs, or it could mess up the springs that the kit come with? and sorry if this is a dome question...

TX02ramair

iTrader: (2)

yes sir thats correct.... ...

myltwon

iTrader: (1)

not a big fan of XFI stuff

I like the XE series more myself

look into a custom grind IMO from LE or AI, an LE custom cam is barely more than an off-the-shelf comp

allenwesley

so the spring it come with should be fine? how do you say it... double springs, or duel springs and im thinking im looking at AI for here in the future for the strocker build

myltwon

iTrader: (1)

dual coil or dual spring typically

what springs are you talking about btw?

allenwesley

My bad their not duel springs their these. (Beehive™ Valve Spring Set; 1.800" Installed Ht. | 1.055/1.290 O.D. PART #26918-16)

And how come every one does not like the cam series XFI... i think it will be ok for now? i mean its only temp, but i will be using it for around 5 months... and thanks for all the help so far

JAKEJR

I don't believe it going to "lope real good", but I believe it's an excellent choice for a 350 size engine.

Now if you're MORE interested in "lope" than in over-all best performance, going up to a 224/230 @ .050 would "lope" better. If you want a REAL RAUNCHY lope, go with 230/236 @ .050, but you'd kill bottom end torque, would need a 3000 stall converter, rear end gears, etc.

One other option is CompCams' new Thumpr series which are specifically designed to give buyers the "lope" they want. Their ads claim torque isn't compromised either. Since so many guys are now jumping on the "lope" bandwagon, CompCams designed a cam series to meet the demand. Give 'em a call and see what's what.

For me, I'm on the opposite end of this issue. I want smooth to barely noticable.

Hope this helps.

Jake

West Point ROCKS!

ss.slp.ls1

iTrader: (36)

Just get the cam I told you to get...

Smokinlt1

I'm happy with my GM846. I lost a lil torque down low but the mid to high rpm pull is awesome. I know it's old technology but it's easy on springs and sounds good to boot. Granted I only went with cam cause it came with motor other wise I'd be running the 503 from the research I've done. I know I posted a sound clip last week and I've been showing it off every where but I'm happy with it. Here it is again, so shoot me, lol.

94LTZ

iTrader: (5)

That cam is kinda big on the lift side, i hope your doing some head work when you plan on doing the cam swap.. Just my opinion but i think it's a waist of time to do a cam with out doing some P&P work on the heads.

RED94Z28

iTrader: (1)

X2
For off the shelf cams the cc503 is hard to beat great midrange with a good topend and a killer idle. The xfi stuff is GAR BAGE imho havent been impressed with it

myltwon

iTrader: (1)

the XFI's have very agressive ramp rates, huge lift (for the average LT1), and ground on a 113LSA.

the XE series of Comp Cams seems to be a nice middle ground between the "lazy" magnum lobes and "aggressive" XFI lobes