is this cam ok?
Thread Starter
12 Second Club
Joined: Mar 2009
Posts: 196
Likes: 0
From: deer park (houston area)
is this cam ok? 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
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
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.
You've got all the supporting mods I'd go a hair bigger.
Thread Starter
12 Second Club
Joined: Mar 2009
Posts: 196
Likes: 0
From: deer park (houston area)
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...
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...
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12 Second Club
Joined: Mar 2009
Posts: 196
Likes: 0
From: deer park (houston area)
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
Thread Starter
12 Second Club
Joined: Mar 2009
Posts: 196
Likes: 0
From: deer park (houston area)
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
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
TECH Regular
Joined: Apr 2007
Posts: 420
Likes: 0
From: Kempner, TX
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!
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!
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
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
12 Second Club
Joined: Jun 2005
Posts: 509
Likes: 0
From: Warner Robins Ga
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.
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.
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
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
the XE series of Comp Cams seems to be a nice middle ground between the "lazy" magnum lobes and "aggressive" XFI lobes
