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Search found 163 matches

by bobmc
Mon Nov 27, 2023 7:40 am
Forum: Engine Tech
Topic: ZZ3/4 intake vs. Perf RPM Q-jet
Replies: 25
Views: 1061

Re: ZZ3/4 intake vs. Perf RPM Q-jet

does the first table for the low manifolds say 471 hp for the ZZ4 and the later table for all manifolds say 451 hp? maybe I can't follow the article
by bobmc
Fri Oct 27, 2023 7:46 am
Forum: Engine Tech
Topic: Chevy 327 Tunnel Ram Idling To Fast When Started
Replies: 12
Views: 708

Re: Chevy 327 Tunnel Ram Idling To Fast When Started

linkage needs to be gone over carefully, maybe disconnect the linkage from each carb leaving a functional return spring for each, I don't know anything about the choke and fast idle setup for that type carb but tinker with them one carb at a time, obviously check the base gaskets for vacuum keaks
by bobmc
Thu Jul 27, 2023 9:18 am
Forum: Engine Tech
Topic: Overbalanced 3.75” SBC crank and vibration
Replies: 28
Views: 1931

Re: Overbalanced 3.75” SBC crank and vibration

is there a cheap from Amazon style tool that will measure vibration?
by bobmc
Sun Jun 18, 2023 6:06 am
Forum: Vintage/Classic/Historical Engine Tech
Topic: Filling blocks
Replies: 22
Views: 2346

Re: Filling blocks

Masterflow 885 grout is commonly used in drag racing with stock type iron engine blocks
by bobmc
Sun Jun 18, 2023 5:58 am
Forum: Engine Tech
Topic: Engine Masters (MotorTrend) Tests Oil Viscosity
Replies: 70
Views: 5368

Re: Engine Masters (MotorTrend) Tests Oil Viscosity

on the Motortrend cable channel the other night they were driving a used up SBC that was going about 10 miles per quart of oil, what current oil and or additive will help with terrible ring seal for let's say a month?
by bobmc
Fri Jun 09, 2023 10:35 am
Forum: Engine Tech
Topic: Low RPM Mark VI 454 Intake and Cam Choices?
Replies: 14
Views: 1062

Re: Low RPM Mark VI 454 Intake and Cam Choices?

how do the exhaust manifolds from a C60 type 427 truck compare to pickup manifolds? manifolds are going to hurt power in the mid range compared to long tube headers
by bobmc
Sun Jun 04, 2023 9:30 am
Forum: Engine Tech
Topic: dished piston quench height?
Replies: 9
Views: 651

Re: dished piston quench height?

most replacement pistons have reduced compression height to account for decked heads and block, if those are stock bore you might use a straight edge ruler and feeler gauge to find out what you have
by bobmc
Tue May 30, 2023 6:16 pm
Forum: Engine Tech
Topic: AFR guideplates
Replies: 4
Views: 409

Re: AFR guideplates

I wanted to order studs, plates, and rockers over the holiday, these no name chinese heads take about .670" thread depth before intruding into the port enough to make me consider cutting some off
by bobmc
Sun May 28, 2023 5:41 pm
Forum: Engine Tech
Topic: AFR guideplates
Replies: 4
Views: 409

AFR guideplates

does anyone know the thickness of their SBC adjustable plate? .090" ? more ?
by bobmc
Sat Apr 08, 2023 5:35 am
Forum: Engine Tech
Topic: Another oil bypass question.
Replies: 43
Views: 2368

Re: Another oil bypass question.

people are reluctant to use the oem filter adapter because it looks cheesy, they feel for the money invested in their engine, it deserves a billet piece, do boats have room for the truck size filter? are there any of those independent tests that have measured the flow for the big filter?
by bobmc
Fri Apr 07, 2023 6:59 am
Forum: Engine Tech
Topic: What flexplate do I use?
Replies: 22
Views: 924

Re: What flexplate do I use?

the whole point of using the crank with bigger counter weights is to avoid external balancing, using the reduced compression height pistons pretty much ensure low piston weight, unless you are going to use power adder pistons with an iron crank
by bobmc
Sun Apr 02, 2023 7:40 am
Forum: Engine Tech
Topic: Quality Flat Tappet Components
Replies: 54
Views: 4631

Re: Quality Flat Tappet Components

what makes a tool steel lifter superior to some other alloy? for instance the 4140 that spring retainers are made of? do they have the same crown as iron lifters?
by bobmc
Wed Mar 22, 2023 6:03 am
Forum: Chassis / Suspension / Body
Topic: tires info
Replies: 5
Views: 1015

Re: tires info

what does leaving at a higher RPM do to your 60' time?
by bobmc
Sat Mar 18, 2023 1:19 pm
Forum: Engine Tech
Topic: Holley 950 Ultra HP Carb
Replies: 108
Views: 6242

Re: Holley 950 Ultra HP Carb

there is no "heavy spring" in that style carb, it must be from something else
by bobmc
Thu Feb 16, 2023 6:52 am
Forum: Engine Tech
Topic: Intake Manifold Porting Show ‘n Tell
Replies: 652
Views: 45612

Re: Intake Manifold Porting Show ‘n Tell

what does that divider in the water outlet accomplish?