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Search found 81 matches

by bigmike
Mon Nov 23, 2020 4:42 am
Forum: Engine Tech
Topic: Big Issues with Cylinder Pressure (DCR)
Replies: 84
Views: 2142

Re: Big Issues with Cylinder Pressure (DCR)

Are we taking 91 or 93 octane pump gas? I guess I'll be the lone wolf here but the flat top 383 SBC with 64cc heads around here never seem to last long. The combonation of west coast 91 octane pump gas and near sea level 200' - 600' and highway gears gets to them even with the timming cranked down. ...
by bigmike
Thu Nov 05, 2020 8:56 am
Forum: Engine Tech
Topic: Weak part throttle performance
Replies: 41
Views: 1178

Re: Weak part throttle performance

What rear end gears and how tall are the tires?
by bigmike
Thu Oct 29, 2020 3:13 pm
Forum: Engine Tech
Topic: guide plates
Replies: 2
Views: 164

Re: guide plates

In the sbc the adjustable guide plates are the only ones I will use these days. Set them right you will have a happy valve train.

So far I've never seen SBC adjustable guide plates that are raised. If they are out there I would look at them.
by bigmike
Fri Oct 16, 2020 10:37 pm
Forum: Engine Tech
Topic: Budget 385sbc upgrades...too much compression?
Replies: 17
Views: 1032

Re: Budget 385sbc upgrades...too much compression?

Compression with the new heads is going to end up around 10.8-1. Do y’all think this will be ok on 91-93 octane pump fuel? I can tell you a couple years ago a guy that I know tried to run a SBC 383 flat top with 64 cc heads in a 1/2 ton pickup with 3.73 gears on 91 octane. It failed miserably only ...
by bigmike
Thu Oct 15, 2020 2:21 pm
Forum: Engine Tech
Topic: LS stand alone ignition controller ?
Replies: 8
Views: 621

LS stand alone ignition controller ?

Asking for a friend. Looking for a stand alone ignition controller in stock for a carburetor equipped LS engine. What are the options? I think his engine going in a older jeep has the 24x reluctor wheel.
by bigmike
Tue Oct 13, 2020 5:43 pm
Forum: Engine Tech
Topic: 350/383 marine scropion cams
Replies: 3
Views: 284

Re: 350/383 marine scropion cams

Is there a fuel pump lobe on all the cams?
by bigmike
Sat Oct 10, 2020 11:31 am
Forum: Vintage/Classic/Historical Engine Tech
Topic: Stock and hopped Z-28 engines here..
Replies: 56
Views: 2176

Re: Stock and hopped Z-28 engines here..

Been a number of years but my mostly stock rebuilt 302 plus .030 over 68 Z/28 made about 351 HP on the dyno with no accessories, electric water pump used on dyno only and headers.
by bigmike
Sat Oct 10, 2020 2:42 am
Forum: Engine Tech
Topic: GM's crate LS427/570 7.0L 570HP engine
Replies: 7
Views: 533

Re: GM's crate LS427/570 7.0L 570HP engine

Mine is the 07 with a LS2 and has the 58x reluctor. What I want to avoid is having it in pieces for 2 or 3 months plus, hence using a crate engine. I got a quote from a local engine builder that wanted a couple thousand plus more for a LS3 style stroker 408. It would have more power but not sure I n...
by bigmike
Fri Oct 09, 2020 4:25 pm
Forum: Vintage/Classic/Historical Engine Tech
Topic: Hydraulic roller cam equivalent to Crane hyd FT 274H06
Replies: 11
Views: 475

Re: Hydraulic roller cam equivalent to Crane hyd FT 274H06

Would this David Vizard spec’d single pattern hyd roller Lunati Voodoo 211/211 @ .050”, 262/262, .515”/.515”, on 106’ LSA be equivalent to the above old Crane hyd FT 274H06? I would say it would not be equivalent to the crane cam. It however would be a good "do no harm cam" for a 305 as far as lowe...
by bigmike
Fri Oct 09, 2020 12:59 am
Forum: Engine Tech
Topic: GM's crate LS427/570 7.0L 570HP engine
Replies: 7
Views: 533

GM's crate LS427/570 7.0L 570HP engine

GM's crate LS427/570 7.0L 570HP engine. Thinking about a some more horsepower for my C6 corvette. Anyone tried one of these out yet? TECH SPECS Part Number: 19420191 Engine Type: LS-Series Small-Block V-8 Displacement (cu in): 427 (7.0L) Bore x Stroke (in): 4.125 x 4.000 (101.6 x 92 mm) Block (P/N 1...
by bigmike
Mon Oct 05, 2020 12:27 am
Forum: Engine Tech
Topic: Top piston ring gap - whats really required?
Replies: 34
Views: 1792

Re: Top piston ring gap - whats really required?

SPEED-PRO PISTON RINGS - DESIGN, FEATURES, and INSTALLATION GUIDELINES Federal-Mogul Document #1205 RADIAL THICKNESS All of the rings in the Speed-Pro line meet original equipment dimensions for proper fit and easy installation. Many modern engines use shallow ring grooves, our sets for these applic...
by bigmike
Thu Oct 01, 2020 2:32 am
Forum: Engine Tech
Topic: Cleaning out the garage...
Replies: 23
Views: 1334

Re: Cleaning out the garage...

Does rust make a valve spring pretty much junk? Some are just light surface rust...others have “chunky” rust. Obviously they would have to be cleaned up, but should they still be useable?
In my experience rust will kill a valve spring even on a near stock engine.
by bigmike
Sun Sep 20, 2020 6:03 pm
Forum: Vintage/Classic/Historical Engine Tech
Topic: Cam advice for a mild 327
Replies: 32
Views: 1124

Re: Cam advice for a mild 327

Crane is not the company it used to be sad to say I used a lot of their stuff back in the day. They filed for bankruptcy in 2009 but they were going down hill before this. At one point S&S cycle bought some of their stuff but it didn't end there. Turned into a mess from my understanding, investment ...
by bigmike
Sun Sep 20, 2020 4:41 am
Forum: Vintage/Classic/Historical Engine Tech
Topic: Cam advice for a mild 327
Replies: 32
Views: 1124

Re: Cam advice for a mild 327

Of the cams mentioned I would go with the Isky 262/270 (208/216, .435”/. 445”, 112 LSA, 42* overlap). I'am just not a fan of the 114 LC on any SBC myself. I would also use some new freash valve springs such as the isky recommended for that cam 205-D. Also use some cam saver type lifters.