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by Walter R. Malik
Sun Aug 14, 2022 12:11 am
Forum: Engine Tech
Topic: LS/circle track?
Replies: 2
Views: 116

Re: LS/circle track?

Our track is allowing 5.3 LS and wondering what I can do to get the most out of a stock internal engine. The rules are… 3150 min weight Stock untouched internals 5.3, CT525 cam allowed Max 6200 rpm(rev limit) Aftermarket MSD ignition allowed Untouched 4412 Holley on dual plane intake, Headers allow...
by Walter R. Malik
Sat Aug 13, 2022 10:54 am
Forum: Engine Tech
Topic: Spark Plugs.. Resistor V. Non-resistor
Replies: 5
Views: 311

Re: Spark Plugs.. Resistor V. Non-resistor

The spark plug post got me to thinking. Is there any real advantage to Non-Resistor plugs? The info I found is a bit vague and sometimes conflicting. Anyone have good data? Only SOMETIMES ... if that internal resistor becomes bad or open for some reason, it will still fire but, weakly and power wil...
by Walter R. Malik
Thu Aug 11, 2022 9:39 am
Forum: Engine Tech
Topic: If going to Methanol, do I need to raise the CFM as well?
Replies: 12
Views: 483

Re: If going to Methanol, do I need to raise the CFM as well?

Tom68 wrote: Thu Aug 11, 2022 1:32 am
433ci. 850cfm @ 20.4 inH20 would be a small carby if it's got good heads and a cam wouldn't it ?
It is all about IF that carburetor is able to supply enough fuel for the amount of air it can flow.
by Walter R. Malik
Wed Aug 10, 2022 9:48 pm
Forum: Engine Tech
Topic: Spark Plug Help
Replies: 9
Views: 324

Re: Spark Plug Help

Anyone know if NGK makes .750 reach, gasketed, 5/8 hex non projected, resistor plug in 8 heat range or colder? Or even .708 tapered seat in 8 heat range? Pretty sure the .708 reach doesnt exist. But.....NGK'S numbering system makes me crazy. Only in a non-resistor in an 8 with that package. R5671A-...
by Walter R. Malik
Wed Aug 10, 2022 9:29 pm
Forum: Engine Tech
Topic: If going to Methanol, do I need to raise the CFM as well?
Replies: 12
Views: 483

Re: If going to Methanol, do I need to raise the CFM as well?

Hello Gang, I have another dumb question for y'all... Building the 433 BBC, all info says I should use a carb in the 800-850 cfm range. If I decide to go to Methanol or E85, and the fuel now needs to be doubled (or there about), do I then also need to raise the CFM rating of the carb? Thanks, Patri...
by Walter R. Malik
Wed Aug 10, 2022 9:23 pm
Forum: Engine Tech
Topic: Solid flat tappet
Replies: 4
Views: 316

Re: Solid flat tappet

Hi guys, I recently broke in a solid flat tappet cam for the first time. I have done plenty of hydraulic flat tappet cams in the past with no problems. My question is after breaking in the solid and putting a few street miles on it, I adjusted the valves and found them out approximately. 005-.007 o...
by Walter R. Malik
Tue Aug 09, 2022 8:16 pm
Forum: Engine Tech
Topic: Where can I get these?
Replies: 9
Views: 421

Re: Where can I get these?

3/8 barb necked down to 1/4. I’ve looked around a good bit, no luck so far. See yellow circle 86FF5127-0457-4A28-B595-23C86C9AFD8C.jpeg I have several out there which I have made. Get a proper 3/8" tube and a 1/4" tube with a very short collar of 5/16" tube ... using some silver solder with a natur...
by Walter R. Malik
Sat Aug 06, 2022 11:01 am
Forum: Engine Tech
Topic: Drilling holes in head gaskets = more flow = lower temps: Change My Mind!
Replies: 40
Views: 1296

Re: Drilling holes in head gaskets = more flow = lower temps: Change My Mind!

Adam, BillK stated the Facts very well and RCJ brings up a good point, the Hottest area is between the two center Exhaust ports, and plumbing water from the water pump to each Head or engine Block directly below the two ports is a good move . Mark H. That gasket in the photo is already different th...
by Walter R. Malik
Fri Aug 05, 2022 2:31 pm
Forum: Vintage/Classic/Historical Engine Tech
Topic: Dual Quad tuning tips?
Replies: 28
Views: 527

Re: Dual Quad tuning tips?

Their tuning is slightly different depending upon whether they are "staged", (and which one is ahead of the other), or both open at the same time. Why are you using 20W-50 oil ...? They are 1:1 with each other. The oil? Habit. That's what the guy I bought it from (in 2003) ran in it and I only rece...
by Walter R. Malik
Fri Aug 05, 2022 11:40 am
Forum: Vintage/Classic/Historical Engine Tech
Topic: Dual Quad tuning tips?
Replies: 28
Views: 527

Re: Dual Quad tuning tips?

Hello all - I'm new here. Been reading as much as possible about tuning Holley 1850C carbs in a dual quad configuration - there's so much to know and learn. I have a solid understanding of how carbs and engines work (engineering background) but I'm short on experience and would like to stick to old...
by Walter R. Malik
Fri Aug 05, 2022 11:03 am
Forum: Engine Tech
Topic: Melting 10550ST SBC Oil pump
Replies: 4
Views: 354

Re: Melting 10550ST SBC Oil pump

Hi all, have done a lot of searches on this oil pump and can find no real world experiences since 2018. I have a current sbc build underway / stroked 383, and am looking for advice. The original engine had a bbc oil pump with a custom oil pan. The intended vehicle it will reside in is a HK Monaro w...
by Walter R. Malik
Fri Aug 05, 2022 10:55 am
Forum: Engine Tech
Topic: Adnormal main bearing wear
Replies: 3
Views: 281

Re: Adnormal main bearing wear

Any one experienced upper main bearings wearing a lot more than the lowers? This is on a BB Chev Dart block new build. 1 - 4 have excesive wear , # 5 still like new. Clearance 1 - 4 has .00275", # 5 has .0032". Personally, I would say that the 3rd from the rear counterweight on that crankshaft is n...
by Walter R. Malik
Wed Aug 03, 2022 4:21 pm
Forum: Engine Tech
Topic: Looking for some Help...SBC Oil fouling plug
Replies: 45
Views: 924

Re: Looking for some Help...SBC Oil fouling plug

Tom68 wrote: Wed Aug 03, 2022 3:05 am Can't imagine enough oil getting past a rocker stud even if you fitted it dry.
At over 19 inches of manifold vacuum on deceleration and the constant running at 12/14 inches of vacuum in the intake port will be the cause of more oil dilution in the cylinder than you evidently realize.
by Walter R. Malik
Wed Aug 03, 2022 11:02 am
Forum: Engine Tech
Topic: Questions about ports that stall, and cam lift.
Replies: 32
Views: 1094

Re: Questions about ports that stall, and cam lift.

I stand by what I posted. If a back cut increases reverse flow it WILL lose power. Simple as that. Let's qualify that ... what I have witnessed is IF that back-flow increases MORE than the air flow in the correct direction has increased from that back-cut, the engine will lose power. Most people wo...
by Walter R. Malik
Wed Aug 03, 2022 12:58 am
Forum: Engine Tech
Topic: Questions about ports that stall, and cam lift.
Replies: 32
Views: 1094

Re: Questions about ports that stall, and cam lift.

I'm seeing about a 3% drop from .500" to .600" (254 to 246) . It does rebound approaching .700" though but that's far and beyond the .575" target suggested. Might not be worth thinking about. Thanks. Is this a stock GM head by chance? This is something we run into with classes that have to run stoc...