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Search found 609 matches

by fdicrasto
Fri Nov 29, 2019 10:38 pm
Forum: Engine Tech
Topic: 4150 to 4500 Intake Conversion
Replies: 8
Views: 532

Re: 4150 to 4500 Intake Conversion

I have a SBC intake made for the 4150 but I need to run a 4500, I have the 2" funnel adapter but I'd like to have a little more hood clearance so I'm wondering if a 1/2" or 3/4" flange plate welded to the top of the intake would work as well as the adapter. Which method would give the best flow? Do...
by fdicrasto
Thu Nov 28, 2019 9:17 pm
Forum: Engine Tech
Topic: Oil drainback holes in pistons
Replies: 9
Views: 889

Re: Oil drainback holes in pistons

50 years ago when I worked for a Chevy TransAm team as "engine monkey" Al Bartz supplied our best engines. When I freshened them the Venolia pistons had 12- .125" holes drilled just below the oil ring groove, 6 per thrust side at 45 degree angle. Of course oil ring tension was lower than we were use...
by fdicrasto
Sun Nov 24, 2019 4:47 pm
Forum: Engine Tech
Topic: Piston pin end clearance?
Replies: 20
Views: 658

Re: Piston pin end clearance?

Of course too little end clearance can lead to problems with heat expansion etc. But too much end clearance can be an issue also when the pin acts as a battering ram due to rod and piston pin bore alignment irregularities. I've never had a failure in this area but everyone on this forum has certainl...
by fdicrasto
Tue Oct 15, 2019 10:35 pm
Forum: Engine Tech
Topic: Under performing 357 sbc
Replies: 33
Views: 1632

Re: Under performing 357 sbc

You need to give more detail on the heads. If I had to put on a blindfold and make a guess I would suspect the heads are way underperforming to what the camshaft needs. Maybe this will get the ball rolling for you.
by fdicrasto
Sat Jul 06, 2019 10:49 am
Forum: Engine Tech
Topic: Mild performance build of my original 327 for my 1964 Corvette
Replies: 47
Views: 1395

Re: Mild performance build of my original 327 for my 1964 Corvette

With your initial plan seems very close to the 340 hp 62-63 vette engines of that era. With 2.02 and 1.6 valves your near the 365 hp engine but down slightly in compression ratio. Totally agree that a mild flat tappet, similar to the 30-30 but less duration will surprise you but be very reliable.
by fdicrasto
Wed Jul 03, 2019 8:23 pm
Forum: Engine Tech
Topic: Block grout
Replies: 9
Views: 775

Re: Block grout

Non catalyzing machinist grout. Cheap and easy.
by fdicrasto
Wed Jul 03, 2019 8:18 pm
Forum: Engine Tech
Topic: 327 help
Replies: 45
Views: 2080

Re: 327 help

Sounds like plugged or restricted exhaust system. Should be easy enough to drop exhaust and check it then.
by fdicrasto
Sat Jun 29, 2019 11:02 am
Forum: Engine Tech
Topic: Spring Tester that made life easier
Replies: 31
Views: 2195

Re: Spring Tester that made life easier

Curious. For many years I have prestressed new valve springs then rechecked and then installed. Is that anything you find worthwhile?
by fdicrasto
Wed Jun 26, 2019 3:30 pm
Forum: Engine Tech
Topic: Spring Tester that made life easier
Replies: 31
Views: 2195

Re: Spring Tester that made life easier

Pretty slick. I won't ask the obvious question.
by fdicrasto
Wed Jun 26, 2019 3:13 pm
Forum: In Memory of Don Terrill
Topic: Progress update on Don Terrill's Speed-Talk
Replies: 29
Views: 2555

Re: Progress update on Don Terrill's Speed-Talk

Sounds good. Will be waiting for the date when i can join the hot pass "club"
by fdicrasto
Sat Jun 22, 2019 12:51 pm
Forum: Engine Tech
Topic: Ignorant young racers...is there any hope?
Replies: 77
Views: 5297

Re: Ignorant young racers...is there any hope?

Having no money and making shit work is the reason we are all here. Me included to a point! How absolutely true this statement is. I have pretty much spent most of my life buying up my rich buddies "obsolete" race engine parts. I then proceeded to have a fairly successful drag racing career with th...
by fdicrasto
Mon Jun 10, 2019 9:45 am
Forum: Engine Tech
Topic: hard cranking once and a while
Replies: 26
Views: 1321

Re: hard cranking once and a while

Do you use this with a crank trigger setup or just distributor? If distributor, locked out or advance curve? Is the kickback when engine cold or warmed up or both? What's total timing # ?
by fdicrasto
Tue Jun 04, 2019 8:56 pm
Forum: Engine Tech
Topic: 380 ci sbc bending exhaust valve
Replies: 95
Views: 5352

Re: 380 ci sbc bending exhaust valve

OEM blocks(sbc) usually required lifter gallery restrictors but the aftermarket stuff does not need restrictors. I have seen instances where a builder made the mistake of utilizing them and caused oil starvation issues up top. Doesn't seem likely in your case but just a heads up.
by fdicrasto
Tue Jun 04, 2019 12:10 pm
Forum: Engine Tech
Topic: Sharing results from my first engine build.
Replies: 7
Views: 459

Re: Sharing results from my first engine build.

splitdecision71 wrote:
Tue Jun 04, 2019 12:06 pm
fdicrasto wrote:
Tue Jun 04, 2019 12:01 pm
You are in the 580-600 hp range. This is assuming you are close to a good tune up.
At the rear tires?
That would be flywheel numbers but a good starting point. I edited my first post.
by fdicrasto
Tue Jun 04, 2019 12:01 pm
Forum: Engine Tech
Topic: Sharing results from my first engine build.
Replies: 7
Views: 459

Re: Sharing results from my first engine build.

You are in the 580-600 hp range. This is assuming you are close to a good tune up. I will say that you are running way more rear gear than you need with that weight and tire height. For just starting out you need to know that you have a lot more potential and just need to work in small increments to...