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Search found 8718 matches

by F-BIRD'88
Sun May 22, 2022 2:45 pm
Forum: Engine Tech
Topic: milling off choke horn
Replies: 11
Views: 586

Re: milling off choke horn

Most do not dyno test with the air cleaner installed.
Nor dynotest at car speed ,as installed. underhood.
by F-BIRD'88
Sun May 22, 2022 1:48 pm
Forum: Engine Tech
Topic: PCV and a Blower
Replies: 2
Views: 244

Re: PCV and a Blower

On a supercharged engine it is imparative that effective oil separation valve cover baffling be used in the valve covers.. And if needed, a inline oil separator eliminate oil migration up the PCV hose. Especially if the PCV is connected at the carb(s), above the blower. You want to avoid oil being s...
by F-BIRD'88
Sat May 21, 2022 11:29 am
Forum: Engine Tech
Topic: Suggestions for Running a Quiet Solid Roller Valvetrain
Replies: 26
Views: 1059

Re: Suggestions for Running a Quiet Solid Roller Valvetrain

Crane Cams has a series of SR solid STREET rollers that are designed to be quiet running.
They were intended fot engine applications that use a knock detector thus need a quiet valvetrain.
I guess Comp Cams has all the Crane Cams assets so contact them about a Crane SR series street roller cam.
by F-BIRD'88
Thu May 19, 2022 7:29 pm
Forum: Engine Tech
Topic: PCV and a Blower
Replies: 2
Views: 244

Re: PCV and a Blower

All pcv valves have a anti back fire safety valve inside. So if you want you can bench test a pcv valve by applying compressed air to it and see with a pressure guage. how much applied pressure causes the pcv valve to close the anti back fire part of it.... If it does close within the blowers boost ...
by F-BIRD'88
Thu May 19, 2022 1:59 pm
Forum: Engine Tech
Topic: dropped base air cleaner
Replies: 30
Views: 1102

Re: dropped base air cleaner

You want to remove the holley carb choke horn on all of the aftermarket version holleys. The old OEM muscle car holleys had a shorter choke horn height and different down leg boosters. The aftermarket holleys all have the taller choke horn. Cut it off or upgrade to the HP style centerbody. (no chok...
by F-BIRD'88
Thu May 19, 2022 11:14 am
Forum: Engine Tech
Topic: dropped base air cleaner
Replies: 30
Views: 1102

Re: dropped base air cleaner

This is the one I used . Original equipment to a 1969 Chevelle BBC holley carb. https://www.ss396.com/chevelle/ATE-3907.html How close would that lid be to the choke horn do you suppose? I'm looking for a similar solution. You want to remove the holley carb choke horn on all of the aftermarket vers...
by F-BIRD'88
Mon May 16, 2022 9:15 pm
Forum: Engine Tech
Topic: Suggestions for Running a Quiet Solid Roller Valvetrain
Replies: 26
Views: 1059

Re: Suggestions for Running a Quiet Solid Roller Valvetrain

Noticed same same thing with steel roller rockers on a BBC.. , magnum roller.. Rockers sewing machone loud... Got the owner to try tighter .012" lash (.020" normal).. Much quieter but still too loud for a street machine.. Later date on teardown.. Cam good, roller lifters ready for change. steel roll...
by F-BIRD'88
Mon May 16, 2022 1:48 pm
Forum: Engine Tech
Topic: Suggestions for Running a Quiet Solid Roller Valvetrain
Replies: 26
Views: 1059

Re: Suggestions for Running a Quiet Solid Roller Valvetrain

On the Comp extreme Energy solid roller cams the sound of the valvetrain at idle gets noticabily quieter as you run tighter lash.. .016/.018" normal... tighten down to .008"/.014" range and you will hear the difference. I believe on these street oriented roller cams this also gives a minor benefit i...
by F-BIRD'88
Sun May 15, 2022 1:31 pm
Forum: Engine Tech
Topic: SBC Weiand 144 blower
Replies: 17
Views: 627

Re: SBC Weiand 144 blower

The torque converter selection is always critical on small cid. sbc's. , for racing.. If using the same converter that was behind the previous 406 expect abot 800 rpm LOWER flash stall off the line. The lil 283 will want to rev up. You want to launch way way up on the boost curve to leave hard with ...
by F-BIRD'88
Sat May 14, 2022 6:48 pm
Forum: Engine Tech
Topic: SBC Weiand 144 blower
Replies: 17
Views: 627

Re: SBC Weiand 144 blower

In stock as cast form,. no question...

A 350 head is a better start point.
920-336-441-487-. need very agressive full porting
by F-BIRD'88
Fri May 13, 2022 8:01 pm
Forum: Engine Tech
Topic: 383 sbc first dyno experience
Replies: 58
Views: 1579

Re: 383 sbc first dyno experience

The top end power hangs on because of the extra exhaust duration.. In the car, you can gear the hell out of it and buzz it thru the traps at high rpm,. thus take advantage of the gears torque multiplication , on launch to leave hard.... Like a Super Stock car.. This one likes to rev...😁 The generous...
by F-BIRD'88
Fri May 13, 2022 3:36 pm
Forum: Engine Tech
Topic: 383 tapping noise
Replies: 96
Views: 2196

Re: 383 tapping noise

Is the scuff on the cylinder wall located anywhere where the rings travel?
by F-BIRD'88
Wed May 11, 2022 11:28 pm
Forum: Engine Tech
Topic: GM 604 sealed crate motor theory....
Replies: 3
Views: 425

Re: GM 604 sealed crate motor theory....

The port openings at the head on that manifold may be cast a bit on the small side for a GM Fast Burn head.
Matches a as cast Iron 062-906 L-31 vortec head I guess.
I guess crate engine class rule do not allow port matching work on the intake.
by F-BIRD'88
Wed May 11, 2022 9:34 pm
Forum: Engine Tech
Topic: SBC Weiand 144 blower
Replies: 17
Views: 627

Re: SBC Weiand 144 blower

The Eaton blowers are a lit more efficiant design. If going EFI you can make a ton of intercooled power with the various Size choices of the Eaton Superchargers.. 2600 etc But they are not cheap. The Lil 122HH Edelbrock E-Force single 4 bbl 122 cid blower is better than a 144 . Just right for 500±. ...
by F-BIRD'88
Wed May 11, 2022 1:53 pm
Forum: Engine Tech
Topic: SBC Weiand 144 blower
Replies: 17
Views: 627

Re: SBC Weiand 144 blower

If building a 283 I would just bore it .030" or .040"
or .060" if needed. max.
Call it what ever you want..
Put the bigger 177 blower on it and even on pump gas
(low cr) you will exceed the power and net perf of all the foolin with a 144.
It will only pump so much air. efficiently.