How about this cam?
02-07-2005 | 12:20 PM
#1
Thread Starter
Supreme Member
Joined: May 2002
Posts: 3,036
Likes: 1
How about this cam?
http://store.summitracing.com/defaul...r+cam&x=19&y=5
if the link dont work heres the info,
Camshaft, Hydraulic Roller Tappet, Advertised Duration 264/274, Lift .480/.480, Chevy Small Block,
Vendor Competition Cams
Product Line Competition Cams Computer-Controlled Camshafts
Cam Style Hydraulic roller tappet
Basic Operating RPM Range 1,200-5,200 RPM
Intake Duration 050 inch Lift 210
Exhaust Duration 050 inch Lift 220
Duration at 050 inch Lift 210 int./220 exh.
Advertised Intake Duration 264
Advertised Exhaust Duration 274
Advertised Duration 264 int./274 exh.
Intake Valve Lift with Factory Rocker Arm Ratio 0.480
Exhaust Valve Lift with Factory Rocker Arm Ratio 0.480
Valve Lift with Factory Rocker Arm Ratio 0.480 int./0.480 exh. lift
Lobe Separation (degrees) 112
Intake Valve Lash (in) 0.000
Exhaust Valve Lash (in) 0.000
Computer Controlled No
Grind Number CS 264H-R12
CARB EO Number (Not Specified)
Quantity Sold individually.
Notes (Not Specified)
Footnotes (Not Specified)
Footnote Legend (Not Specified)
what is the Max lift on the 083 casting 350 heads?
would that cam work well with my set-up?
https://www.thirdgen.org/techbb2/sho...hreadid=276405
Any help would be great!
if the link dont work heres the info,
Camshaft, Hydraulic Roller Tappet, Advertised Duration 264/274, Lift .480/.480, Chevy Small Block,
Vendor Competition Cams
Product Line Competition Cams Computer-Controlled Camshafts
Cam Style Hydraulic roller tappet
Basic Operating RPM Range 1,200-5,200 RPM
Intake Duration 050 inch Lift 210
Exhaust Duration 050 inch Lift 220
Duration at 050 inch Lift 210 int./220 exh.
Advertised Intake Duration 264
Advertised Exhaust Duration 274
Advertised Duration 264 int./274 exh.
Intake Valve Lift with Factory Rocker Arm Ratio 0.480
Exhaust Valve Lift with Factory Rocker Arm Ratio 0.480
Valve Lift with Factory Rocker Arm Ratio 0.480 int./0.480 exh. lift
Lobe Separation (degrees) 112
Intake Valve Lash (in) 0.000
Exhaust Valve Lash (in) 0.000
Computer Controlled No
Grind Number CS 264H-R12
CARB EO Number (Not Specified)
Quantity Sold individually.
Notes (Not Specified)
Footnotes (Not Specified)
Footnote Legend (Not Specified)
what is the Max lift on the 083 casting 350 heads?
would that cam work well with my set-up?
https://www.thirdgen.org/techbb2/sho...hreadid=276405
Any help would be great!
Last edited by NEEDforSPEED; 02-07-2005 at 12:23 PM.
02-11-2005 | 05:49 PM
#2
Moderator
Joined: Jan 2000
Posts: 19,456
Likes: 244
0.480" is right at or slightly over the safe limit of lift on stock heads. I'd strongly advise checking the seal/guide clearance, stud/slot clearance, and for retainer interference. It would be a great time to trash the stock springs and rockers as well.
02-12-2005 | 12:59 PM
#3
Member
Joined: Nov 2003
Posts: 388
Likes: 0
From: Victoria, British Columbia
Car: 1989 GTA
Engine: 5.0 TPI
Transmission: T-5 WC
Axle/Gears: Yukon 3.73
You have touched on a topic I am interested in about safe limit for gross value lift for stock heads. I have a GM rebuilt 5.0 Litre TPI with a Comp Cam that produces about .48” of gross value lift for the intake and exhaust valves with the stock 1.5 ratio rockers. The heads are stock with headers. I am considering 1.6 ratio rockers that would produce about .52” of gross value lift. I have seen camshafts that produce .52” of lift and even more so one would think the valves would not touch the piston at TDC. The other issue is pressed in or screwed in rocker bolts on the top of the heads. The springs need for these, I have been advised, could pulled the pressed in rocker bolts out. What am I missing when it comes to gross valve lift?
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