Search found 122 matches
- Tue Mar 19, 2024 7:12 pm
- Forum: Engine Tech
- Topic: My CompCams Cam Card ECL Question
- Replies: 24
- Views: 861
Re: My CompCams Cam Card ECL Question
Just guesstimating, but Comp may have paired non-symmetrical intake and exhaust lobes from different design families that have different offsets from seat timing to .050" timing, in order to achieve your requested specs. I wouldn't panic.
- Tue Mar 19, 2024 7:12 pm
- Forum: Engine Tech
- Topic: My CompCams Cam Card ECL Question
- Replies: 24
- Views: 861
Re: My CompCams Cam Card ECL Question
Just guesstimating, but Comp may have paired non-symmetrical intake and exhaust lobes from different design families that have different offsets from seat timing to .050" timing, in order to achieve your requested specs. I wouldn't panic.
- Sat Dec 09, 2023 2:17 pm
- Forum: Engine Tech
- Topic: How good were caddy 500's really?
- Replies: 34
- Views: 10725
Re: How good were caddy 500's really?
In the late 1960's-early 1980's, the 500-type Cadillac was the powerplant of choice for the airboat crowd in Florida. Lots of low RPM torque, enabling you to step up the prop size and pitch. There was an off-the-shelf Chrysler B piston that provided a compression and displacement increase, with just...
- Tue Oct 17, 2023 3:08 pm
- Forum: Engine Tech
- Topic: Lifter face radius question
- Replies: 50
- Views: 11497
Re: Lifter face radius question
I know one racer that tried the composite wheel Schubeck lifters. He called Joe when he needed help turning the engine over on the engine stand while adjusting the valves. He was told to go ahead and run it. It didn't do very well........ instantly.
- Fri Jul 14, 2023 9:30 am
- Forum: Engine Tech
- Topic: Another way to micro polish parts
- Replies: 13
- Views: 2024
Re: Another way to micro polish parts
Not very detailed, but may be similar to the Mikronite process.
- Wed Apr 12, 2023 5:20 pm
- Forum: Engine Tech
- Topic: cam lobe center/ seperation
- Replies: 151
- Views: 122822
Re: cam lobe center/ seperation
For the most part this thread is low vac cams, idle has been mentioned. A couple degrees of LSA change is nothing when you're tossing up cams with large amounts of overlap. So idle is a duration conversation not an LSA conversation. Idle is an overlap timing/area, so LSA affects that. Yer point was...
- Wed Apr 12, 2023 4:40 pm
- Forum: Engine Tech
- Topic: cam lobe center/ seperation
- Replies: 151
- Views: 122822
Re: cam lobe center/ seperation
With all of these "comparisons", especially for street driven applications, why isn't idle (or cruising ) vacuum ever mentioned? For the most part this thread is low vac cams, idle has been mentioned. A couple degrees of LSA change is nothing when you're tossing up cams with large amounts...
- Wed Apr 12, 2023 12:34 pm
- Forum: Engine Tech
- Topic: cam lobe center/ seperation
- Replies: 151
- Views: 122822
Re: cam lobe center/ seperation
With all of these "comparisons", especially for street driven applications, why isn't idle (or cruising ) vacuum ever mentioned?
- Wed Feb 22, 2023 8:53 am
- Forum: Engine Tech
- Topic: Cam Core Shortages/Small Base Circle Cams
- Replies: 5
- Views: 697
Re: Cam Core Shortages/Small Base Circle Cams
Does the 400" have BBC journals? Otherwise the lobes would be above the SBC sized journals..
- Sat Feb 11, 2023 9:18 am
- Forum: Engine Tech
- Topic: Mating Two V8's, ( Freight Train) vs. Harmonics
- Replies: 39
- Views: 4969
Re: Mating Two V8's, ( Freight Train) vs. Harmonics
I believe that Chet Herbert made a V16 SBC with welded together blocks and a one-piece crankshaft. Don't recall the results?
- Tue Feb 07, 2023 6:08 pm
- Forum: Engine Tech
- Topic: Mating Two V8's, ( Freight Train) vs. Harmonics
- Replies: 39
- Views: 4969
Re: Mating Two V8's, ( Freight Train) vs. Harmonics
On Bob Stratman's series of twice-motored unblown SBC dragsters, we used a double-row chain for a coupling, with matching sprockets on the rear of the front and the front of the rear engines. Could change phasing in a couple of minutes. Some versions "sounded" better than others, but it al...
- Mon Jan 23, 2023 11:37 am
- Forum: Engine Tech
- Topic: Does anyone recognize these cam lobes?
- Replies: 6
- Views: 1195
Re: Does anyone recognize these cam lobes?
It is a Crane small base circle 8620 core. The intake lobe could be a Crane R-268/4467 profile . When ground on a .900" base circle, the duration would lose a couple of degrees, ending up at 266 at .050", and 298 at .020" What is it at .200"? It should be about 190, if that's the...
- Wed Sep 21, 2022 7:35 pm
- Forum: Engine Tech
- Topic: Who has a old Cam Dynamics catalog
- Replies: 6
- Views: 846
Re: Who has a old Cam Dynamics catalog
Anything on the front of the cam?
- Wed Sep 21, 2022 12:27 pm
- Forum: Engine Tech
- Topic: Who has a old Cam Dynamics catalog
- Replies: 6
- Views: 846
Re: Who has a old Cam Dynamics catalog
That's the semi-finished core part number and the heat treat code. Any other numbers?
- Sat Mar 12, 2022 6:31 pm
- Forum: Engine Tech
- Topic: Dumb history question for the carb guys
- Replies: 77
- Views: 12656
Re: Dumb history question for the carb guys
For the record, Mark Campbell was the engineer at Crane who was responsible for the "Quick Lift" rocker arm system . . . . . The history of Holley in the performance arena is very interesting: the Holley brothers began supplying carburetors to engine manufacturers way over 100 years ago. ...