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by In-Tech
Tue Nov 29, 2022 9:17 am
Forum: Engine Tech
Topic: Harold Brookshire lobes and intake centerline.
Replies: 24
Views: 924

Re: Harold Brookshire lobes and intake centerline.

Hiya, This is a much bigger conversation than ICL. I have picked up 90hp at 7600rpm due to ICL, IGN timing and Fuel curve on a limited carb 4412 360cu in. Not 90hp peak, nor the average added up. This conversation isn't talking about reality when you don't know the lobes nor have a baseline of that :)
by In-Tech
Mon Nov 28, 2022 5:34 pm
Forum: Engine Tech
Topic: Vr1 for breaking in a cam?
Replies: 8
Views: 345

Re: Vr1 for breaking in a cam?

Hiya, Just my opinion, Use some good quality assembly lube on the cam, put a heavy dose of moly grease on the distributor gear of the cam and on the distributor gear so they break in well. I wouldn't be afraid of the VR-1 Racing especially since it's a stock grind with lazy lobes. Again, just my opi...
by In-Tech
Mon Nov 28, 2022 12:57 pm
Forum: Engine Tech
Topic: Harold Brookshire lobes and intake centerline.
Replies: 24
Views: 924

Re: Harold Brookshire lobes and intake centerline.

Shoot Brian, you are forgiving. I check my TDC lobe centerline @ .005" up/down max lobe lift, probably overkill :wink: Max lobe lift is not the real centerline, a lot of times. Yes Walter, we are talking about asymmetrical lobes. But you need to start with one known good point and adjust from there...
by In-Tech
Mon Nov 28, 2022 1:16 am
Forum: Engine Tech
Topic: Harold Brookshire lobes and intake centerline.
Replies: 24
Views: 924

Re: Harold Brookshire lobes and intake centerline.

Shoot Brian, you are forgiving. I check my TDC lobe centerline @ .005" up/down max lobe lift, probably overkill :wink:
by In-Tech
Thu Nov 24, 2022 2:45 am
Forum: General Tech
Topic: New fuel tank
Replies: 2
Views: 74

Re: New fuel tank

Build aluminum, hard coat anodize. Dun.
by In-Tech
Thu Nov 24, 2022 12:40 am
Forum: Engine Tech
Topic: What ll this make? Rammed 496 bbc
Replies: 12
Views: 363

Re: What ll this make? Rammed 496 bbc

Truly, for any of us that develop anything after 5252rpm...it;s about chasing torque where it changes the aftermath :wink:
by In-Tech
Thu Nov 24, 2022 12:36 am
Forum: Engine Tech
Topic: BBC rear main leak
Replies: 31
Views: 1161

Re: BBC rear main leak

Most of the LS/LT stuff says to install dry on the rubbing surface. Hopefully one of these guys/gals here can provide some insight. I always used to lube everything.
by In-Tech
Thu Nov 24, 2022 12:19 am
Forum: Engine Tech
Topic: What ll this make? Rammed 496 bbc
Replies: 12
Views: 363

Re: What ll this make? Rammed 496 bbc

Yeah, props are a whole expensive world by themselves especially these days. I do understand why Merc charges $10-12k per prop. In the early 90's I was lucky enough to have a prop made by Harold Kinsvater(ME airplane prop dude). I don't know crapola about this boat stuff. One of the coolest things h...
by In-Tech
Wed Nov 23, 2022 11:21 pm
Forum: Engine Tech
Topic: What ll this make? Rammed 496 bbc
Replies: 12
Views: 363

Re: What ll this make? Rammed 496 bbc

100mph in that boat is way respectable. The bigger heads and intake will definitely help with more mph. Keep the old gears around, you might find it will respond better to a half inch or so bigger OD and a pitch change, think of it as a bigger tire with same gearing. As you know, marine is a whole d...
by In-Tech
Wed Nov 23, 2022 9:50 pm
Forum: Engine Tech
Topic: What ll this make? Rammed 496 bbc
Replies: 12
Views: 363

Re: What ll this make? Rammed 496 bbc

Something like this is always good in endurance marine to help with valve spring life..
https://www.hardin-marine.com/p-16736-b ... ilers.aspx

I usually put a 40lb check valve on to help low rpm oil pressure.
by In-Tech
Wed Nov 23, 2022 9:40 pm
Forum: Engine Tech
Topic: What ll this make? Rammed 496 bbc
Replies: 12
Views: 363

Re: What ll this make? Rammed 496 bbc

Most people with that combo will make 740ish but I bet with your "rub" work on the heads and intake you should be in the 800 ballpark, might take 6800rpm though. Is this a jet or an I/O?
by In-Tech
Tue Nov 22, 2022 2:30 pm
Forum: Engine Tech
Topic: 268HP iron duke.
Replies: 15
Views: 581

Re: 268HP iron duke.

SpeierRacingHeads wrote: Tue Nov 22, 2022 10:48 am Cam that was in it.
Mini pro stock engine, nice :)
by In-Tech
Tue Nov 22, 2022 2:54 am
Forum: Engine Tech
Topic: 350ci 470HP Peak at 6000RPM
Replies: 74
Views: 2007

Re: 350ci 470HP Peak at 6000RPM

Tom, don't waste your time with the Fbird idiot. Forget about his post count, most have concluded he is an internet idiot re-poster who believes everything he reads. Fbird = self proclaimed whatever. He has a clue, but on average on what he has read and only minimally done.
by In-Tech
Mon Nov 21, 2022 9:03 pm
Forum: Engine Tech
Topic: 268HP iron duke.
Replies: 15
Views: 581

Re: 268HP iron duke.

Chad, I can't see the details of the manifold. In my mind, that isn't what you wanted. I was soooooo pissed when I spec'd this engine and the fool that made the intake manifold I designed didn't do it even near my spec. He told the shop that he was "the guy". I looked at it and said to my customer, ...
by In-Tech
Mon Nov 21, 2022 8:13 pm
Forum: Engine Tech
Topic: 350ci 470HP Peak at 6000RPM
Replies: 74
Views: 2007

Re: 350ci 470HP Peak at 6000RPM

Hiya Tom, I noticed you have been a member here for less than a year. There is a wealth of information on this site. Quite a few have quit sharing information. Of course runner length matters and whether wet flow or dry flow and wherever the wet flow is introduced. Bring apples to apples questions, ...