Search found 427 matches

by HDBD
Sat Oct 29, 2022 8:15 pm
Forum: Engine Tech
Topic: Dual Plane Dual Quad
Replies: 23
Views: 2541

Re: Dual Plane Dual Quad

F-BIRD'88 wrote: Tue Aug 30, 2022 2:34 am
Geoff2 wrote: Tue Aug 30, 2022 2:29 am Yes! Chrysler did. 426 Street Hemi.
The 426 Street Hemi had 2x4 carb induction.
The 440 Magnum RB and the 340 LA had the Six Pack induction.
Add to the list 1959-61 Mopar 350, 361, 383 "B" engine
by HDBD
Tue Oct 25, 2022 11:04 am
Forum: Engine Tech
Topic: Hydraulic Roller Lifters, Oil Pressure
Replies: 1
Views: 403

Hydraulic Roller Lifters, Oil Pressure

Does anybody have published specifications regarding typical hydraulic roller lifter oil pressure requirements? I realize they vary by type and intended application, but I'm just looking for typical Chevy LS-type replacement lifters with .842 x .700 wheels. Years ago, I had white papers from Delphi,...
by HDBD
Fri Oct 21, 2022 9:28 am
Forum: Engine Tech
Topic: Fun with a L69 305 84 Z28
Replies: 45
Views: 3085

Re: Fun with a L69 305 84 Z28

I have done something very similar to what you wanted years ago. I had a 1985 El Camino that I wanted to look 100% OEM in California, retain emission equipment, and have a smooth stock-type idle. All of this with available OEM castings, nothing aftermarket. I just wanted more skoot with better than ...
by HDBD
Wed Sep 07, 2022 10:31 am
Forum: Engine Tech
Topic: High nickel blocks? Vortec heads??
Replies: 34
Views: 4420

Re: High nickel blocks? Vortec heads??

Old Mercedes 6-cylinder blocks were harder than regular cast iron; I bored them back in the day.
by HDBD
Wed Aug 10, 2022 12:21 pm
Forum: Engine Tech
Topic: Centistoke oil rating
Replies: 19
Views: 1661

Re: Centistoke oil rating

There are many good oils that fall into this category and offer multi viscosity protection such as 15/w40 for example. Probably most relevant for street cars that are subjected to cold weather.
by HDBD
Wed Aug 03, 2022 8:47 pm
Forum: Engine Tech
Topic: Top end oiling issue after hydraulic roller change.
Replies: 28
Views: 1727

Re: Top end oiling issue after hydraulic roller change.

Problems with the lifter feed happens when the oil fill band does not match the feed passage. I have grooved some lifter bands to aid / add to the feed time the passage is exposed to pressure.
by HDBD
Tue Aug 02, 2022 9:08 pm
Forum: Engine Tech
Topic: Top end oiling issue after hydraulic roller change.
Replies: 28
Views: 1727

Re: Top end oiling issue after hydraulic roller change.

There are ls lifters with standard body length and pushrod seat, .700 roller.
by HDBD
Mon Jul 25, 2022 8:22 am
Forum: Engine Tech
Topic: 1969 SBC 350 block questions
Replies: 10
Views: 924

Re: 1969 SBC 350 block questions

That could be a valuable block for a vintage restoration.
by HDBD
Sun Jul 17, 2022 9:46 am
Forum: Engine Tech
Topic: 4 cylinder carb intake.
Replies: 7
Views: 688

Re: 4 cylinder carb intake.

Of course individual runner and weber DCOE would be nice but back in the day this setup helped me take a 2 liter pinto up to 175rwhp while still being streetable. Norris cam and Valley Head Services help on the heads. The falcon holley carbs were very crude but the torque output was a huge jump over...
by HDBD
Tue May 31, 2022 7:39 pm
Forum: Engine Tech
Topic: Valve seat removal techniques
Replies: 11
Views: 3218

Re: Valve seat removal techniques

I grind a groove midway on the id and heat to 150 then use a slide hammer and an internal jaw puller to get them out clean.
by HDBD
Sat May 28, 2022 8:24 pm
Forum: Engine Tech
Topic: ISO 10° Valve Lock, 7MM Stem
Replies: 5
Views: 768

Re: ISO 10° Valve Lock, 7MM Stem

As much as I would like to use those the bead is larger than the Ford mod triple beads.
by HDBD
Thu May 19, 2022 2:23 pm
Forum: Engine Tech
Topic: ISO 10° Valve Lock, 7MM Stem
Replies: 5
Views: 768

ISO 10° Valve Lock, 7MM Stem

Looking for single .055"R. bead lock 10° valve locks to use with CompCams retainers and dual springs. TIA
by HDBD
Sat May 14, 2022 10:16 pm
Forum: Engine Tech
Topic: PipeMax Help Pipe Choices
Replies: 1
Views: 374

PipeMax Help Pipe Choices

I work on primarily Harleys and most of them have a 2 into 1 stepped header with merge style collector into a single baffled muffler, straight through. Can someone lead me to the proper choice for pipe type? TIA
by HDBD
Sat May 07, 2022 10:51 am
Forum: Engine Tech
Topic: Question about the stock 1970 426 Hemi hyd. lifters?
Replies: 13
Views: 1361

Re: Question about the stock 1970 426 Hemi hyd. lifters?

I could be wrong but back in the day I seem to remember hemis having lobes go flat rather frequently. Or was that the excuse to tell dad to change cams? Its a blur now..
by HDBD
Thu Apr 28, 2022 5:43 pm
Forum: Engine Tech
Topic: Lawn mower carb on a v8 41mpg
Replies: 10
Views: 1382

Re: Lawn mower carb on a v8 41mpg

Did something similar when I was a kid to get Hilborne to work on the street. Idle and off idle were with a small engine carb and small feed tubing then the main pump feed and injectors came on.