Search found 1137 matches
- Fri May 12, 2023 8:58 am
- Forum: Engine Tech
- Topic: Prove it to me....Camshaft Gear Drive is a HP Killer
- Replies: 54
- Views: 6569
- Wed Oct 12, 2022 5:57 pm
- Forum: Engine Tech
- Topic: XP vs HP main bodies (Holley)
- Replies: 10
- Views: 1345
Re: XP vs HP main bodies (Holley)
The aluminum HP main bodies use the same bleed locations as the XP. The don't have the idle air bleed and they don't have stepped boosters like the XPs.
- Fri Jun 24, 2022 1:39 pm
- Forum: Engine Tech
- Topic: What Happened to Edelbrock's new VRS-4150 Carburetor?
- Replies: 24
- Views: 4456
Re: What Happened to Edelbrock's new VRS-4150 Carburetor?
Engineering at Edelbrock was fun in some ways, but the problems out in the manufacturing shop are too frustrating and demoralizing to design for. I designed an RB Chrysler head for 383,426,440 engines that was a huge improvement over the previous head. The foundry tooling was made by an outside sup...
- Fri Jun 24, 2022 1:36 pm
- Forum: Engine Tech
- Topic: Air fuel ratio tracking rich
- Replies: 1
- Views: 349
Re: Air fuel ratio tracking rich
Your description isn't very clear... what changed between _3 and _4? Was there a carb switch? If so, what was the first carb? Thx
- Thu May 19, 2022 8:30 pm
- Forum: Engine Tech
- Topic: dropped base air cleaner
- Replies: 30
- Views: 2645
- Wed Mar 23, 2022 10:27 pm
- Forum: Engine Tech
- Topic: Statment from Rick Roberts, regarding Speedmaster press release.
- Replies: 15
- Views: 2893
Re: Statment from Rick Roberts, regarding Speedmaster press release.
Had to go re-read the Speedmaster release to see exactly what they stated: "Speedmaster is proud to announce the addition of Fredrick (Rick) Roberts PhD as North American Director of Engineering. Rick is well known for serving 28 years as Edelbrock's Director of Engineering and played an integr...
- Wed Mar 23, 2022 10:11 pm
- Forum: Engine Tech
- Topic: Cam Specs: Seat vs .050"
- Replies: 35
- Views: 2529
Re: Cam Specs: Seat vs .050"
OK, I'll throw in two different things here that *may* fit into the discussion above. First, a bunch of stuff I posted elsewhere about a decade ago re lash settings and measured duration points: https://board.moparts.org/ubbthreads/ubbthreads.php/ubb/showflat/Number/1277696/Searchpage/1/Main/113458/...
- Fri Jan 28, 2022 4:02 pm
- Forum: Engine Tech
- Topic: !970's Pro-Stock Camshaft Spec.'s
- Replies: 41
- Views: 4941
Re: !970's Pro-Stock Camshaft Spec.'s
Thanks to Larry for the Picture of the Roy Hill driven Mopar, and Thank you Mike ( CamKing ) and every body else who contributed to this thread, it was a dream back in time and was enjoyable. Mark H. :) Re Roy Hill; one saw him race once, the U.S. Pro Stock Open in either 1976 or 1977. He and his D...
- Sun Jan 23, 2022 7:44 pm
- Forum: Engine Tech
- Topic: !970's Pro-Stock Camshaft Spec.'s
- Replies: 41
- Views: 4941
Re: !970's Pro-Stock Camshaft Spec.'s
I'm surprised nobody has dug up their dog-eared copy of Grumpy's SBC race engine book from the mid-70s where he goes into a lot of detail on what he ran for cams...
- Thu Jan 13, 2022 10:25 am
- Forum: Race Cars & Parts - For Sale or Wanted
- Topic: BLP RapidJet Metering Blocks (2)
- Replies: 1
- Views: 1077
- Wed Jan 12, 2022 6:07 pm
- Forum: Engine Tech
- Topic: PCV vs EVAC
- Replies: 76
- Views: 7690
Re: PCV vs EVAC
I dug up the following after reading this thread. I don't recall where I came across it, and must not have been interested in whatever "Stage 1" and "Stage 2" were cuz I didn't bother taking screen-shots of them for reference at the time. Similar concept, except the PCV valves ar...
- Mon Nov 29, 2021 2:36 pm
- Forum: Engine Tech
- Topic: Bushed & indexed lifter bores = power improvement?
- Replies: 5
- Views: 1044
Bushed & indexed lifter bores = power improvement?
I did a search and didn't notice any existing threads that talked about this, or certainly nothing recent. Have people found power improvements going from production-line lifter bores to bushed & indexed lifter bores? FWIW, I'm dealing w/ old Chrysler 440 cast iron blocks and solid roller lifter...
- Sat Nov 27, 2021 9:27 am
- Forum: Engine Tech
- Topic: 2.56 Gear, Stock Converter, 4100 Pounds, NA 11s?
- Replies: 175
- Views: 16864
Re: 2.56 Gear, Stock Converter, 4100 Pounds, NA 11s?
What's been done to the trans to handle that amount of power?
- Sat Nov 27, 2021 9:18 am
- Forum: Engine Tech
- Topic: How much to flow heads
- Replies: 91
- Views: 7695
Re: How much to flow heads
No way I could do that in 10 minutes.
You opted to vote with your feet; done the same myself on occasion when the $ vs my expectation of the work involved didn't align.
You opted to vote with your feet; done the same myself on occasion when the $ vs my expectation of the work involved didn't align.
- Wed Nov 24, 2021 12:34 pm
- Forum: Engine Tech
- Topic: How much to flow heads
- Replies: 91
- Views: 7695
Re: How much to flow heads
All that's needed is a shop vac, remove the valve, plug the valve guide, and insert a pressure sensor at the inlet. :D Considering how little value most flow numbers actually contribute to engine performance, why bother with expensive measurement that won't be used? :( I can't speak for others, esp...