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#1
05-21-2018, 10:25 PM
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cam id question
I have a cam that I have had for years I can't seem to find the cam card to can anyone help me identify it
the numbers on the cam end are 4030b/4032b r110 e r b 6723 thanks in advance bruce |
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#2
05-21-2018, 10:47 PM
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My guess is Comp Cams lobes 4030 and 4032 on a 110 LSA.
Snipped from the Comp Cams lobe catalog:
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'68 Firebird 463/pump gas/SD 325 E-heads/266-272 SR cam/1050 Dominator/3.73/ET Street Radials/1.37 60'/6.30@108.80/9.93@135.14 Hot Rod Drag Week finishing averages: 2014 - 11.12 @ 118.56 2015 - 10.84 @ 124.97 2016 - 10.56 @ 127.88 2017 - 10.29 @ 130.74 2018 - 10.29 @ 130.53 2019 - 10.16 @ 132.34 2021 - 10.09 @ 132.69 2022 - 10.13 @ 133.07 9.93 run - https://youtu.be/hII0_UlYM4U 
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#3
05-21-2018, 11:22 PM
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The "B" after the lobe number is a roller cam lobe suffix code.
See page 3 here: http://www.compcams.com/Technical/Ca...terCatalog.pdf When ordered with a "B" suffix code after the lobe number it can, but not always, alter the rated duration. Example on Comp solid roller lobe 4876 the Master Lobe Profile Catalog states 292 degrees at .015" tappet lift, but when ordered as 4876B it come ground with 291 degrees. The duration at .050" tappet lift remains the same. Also sometimes a "B' suffix code can, but not always, add an additional 0.001" to the lobe lift. The Hi-Tech .420" Rollers cam cards typically suggest .020 lash. According to Butler they should not be aggressive enough to break lifter bores. .
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'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 ) Old information here: http://www.hotrod.com/articles/0712p...tiac-trans-am/ Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine) 5.14 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension https://www.youtube.com/watch?v=qDoJnIP3HgE |
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#4
05-22-2018, 11:29 PM
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thanks that was the lobes I thought but did not know the b sufix
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