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Search found 7490 matches

by F-BIRD'88
Fri Aug 14, 2020 8:20 am
Forum: Engine Tech
Topic: preventing fuel from boiling in the carb
Replies: 22
Views: 376

Re: preventing fuel from boiling in the carb

You will notice that modern cars with electric cooling fan that the fan runs after shut off to blow out the hot under hood air as well as force cool the radiator on hot shut down. on cars with mechanical engine cooling fan some carbed cars had a small 12v ducted fan that blows cool air at the carb b...
by F-BIRD'88
Fri Aug 14, 2020 7:50 am
Forum: Engine Tech
Topic: preventing fuel from boiling in the carb
Replies: 22
Views: 376

Re: preventing fuel from boiling in the carb

The short rubber fuel hose that connects the fuel pump inlet to the frame mounted fuel feed hard line must be of proper type or it will collapse kink shut if when hot. A rear mounted (rubber noise vibrationisolation mounted)(near tank) Carter P4070 electric fuel pump is just right as a "pusher pump"...
by F-BIRD'88
Fri Aug 14, 2020 7:46 am
Forum: Engine Tech
Topic: preventing fuel from boiling in the carb
Replies: 22
Views: 376

Re: preventing fuel from boiling in the carb

Back in the carburetor era the volitility of the gasoline was adjusted a few times a year ."summer gas, winter gas"
To aid cold start and summer heat soak vapour lock resistance on carbed engines.

With most all cars being EFI now, the big gasoline supplyers don't bother.
by F-BIRD'88
Fri Aug 14, 2020 7:29 am
Forum: Engine Tech
Topic: preventing fuel from boiling in the carb
Replies: 22
Views: 376

Re: preventing fuel from boiling in the carb

A wood carb spacer (Edelbrock or home made) helps a lot. Along with the 2 ply with lil air gap Holley carb heat shield that extends out to under the carb bowls. +Seals IT fuel pump mounting heat isolation gasket. If hot soak re starting. First crank it over with the ignition power off.. 1-2-3-4 then...
by F-BIRD'88
Thu Aug 13, 2020 10:31 pm
Forum: Engine Tech
Topic: preventing fuel from boiling in the carb
Replies: 22
Views: 376

Re: preventing fuel from boiling in the carb

Which carb on which intake manifold?
by F-BIRD'88
Thu Aug 13, 2020 3:27 pm
Forum: Engine Tech
Topic: 3x2 intake build.
Replies: 16
Views: 1031

Re: 3x2 intake build.

A taller 3x2 intake manifold allows longer tuned runners of equal or near equal length. Like a Tunnel Ram. Further: any good powerfull single 4 bbl intake manifold should work very very well with a proper height/plenum contour 3x2 carb to single 4 bbl adapter. Its going to add about 3" carb height f...
by F-BIRD'88
Thu Aug 13, 2020 3:13 pm
Forum: Engine Tech
Topic: Cylinder pressure
Replies: 5
Views: 225

Re: Cylinder pressure

Are you refering to cranking pressure or dynamic real cylinder pressure running at rpm speed at WOT?

Basic cranking pressure is determined by intake valve closing point and also some what by cranking rpm.
by F-BIRD'88
Wed Aug 12, 2020 9:49 pm
Forum: Engine Tech
Topic: 062 Vortec Head Test a Success Car goes 10.92
Replies: 24
Views: 1136

Re: 062 Vortec Head Test a Success Car goes 10.92

Your current 406 only needs a solid lifter cam to allow it to trap much higher with the single plane .and 88's Ya no doubt that hyd is going to run out of steam at 6100-6200 ish
I recomend a Isky flat tappet cam. There is a few Crane solids good for this too.
by F-BIRD'88
Wed Aug 12, 2020 9:39 pm
Forum: Engine Tech
Topic: 3x2 intake build.
Replies: 16
Views: 1031

Re: 3x2 intake build.

A Edelbrock Dual Quad Perf RPM air gap hi rise Dual plane manifold can be modified to accept 3x2 holley carbs.. Reqjires cutting the 2x4 carb flange tops off it and fitting a bolt on custom plenum top. Could then be 3x2 or 1 x4 + 1x2 carbs. Or could be 3x2 rochesters.. or 2x4 holleys on spacer adapt...
by F-BIRD'88
Wed Aug 12, 2020 9:32 pm
Forum: Engine Tech
Topic: Weiand MOPAR vertical cross 3x2 intake.
Replies: 20
Views: 1390

Re: Weiand MOPAR vertical cross 3x2 intake.

If you look at the Chevy 5.7 L 350 L-31 Vortec engine the intake manifold base is essentually a squished down low profile EFI version of this.. Would also be a nightmare to convert to carbs .
by F-BIRD'88
Wed Aug 12, 2020 10:30 am
Forum: Engine Tech
Topic: Weiand MOPAR vertical cross 3x2 intake.
Replies: 20
Views: 1390

Re: Weiand MOPAR vertical cross 3x2 intake.

Here you go PdQ67. Here is the base manifold just waiting for a custom plenum top.
Image
by F-BIRD'88
Tue Aug 11, 2020 8:04 pm
Forum: Engine Tech
Topic: 062 Vortec Head Test a Success Car goes 10.92
Replies: 24
Views: 1136

Re: 062 Vortec Head Test a Success Car goes 10.92

If with 30" tall slicks you will need a lot more gear than 4.10's You want to be trapping at near 7000 rpm + . As high as you can without loosing mph. The converter will also function better... Remove weight in front of driver. Cal-Trac traction bars. Solid body mounts instead of oem rubber between ...
by F-BIRD'88
Tue Aug 11, 2020 1:32 pm
Forum: Engine Tech
Topic: 062 Vortec Head Test a Success Car goes 10.92
Replies: 24
Views: 1136

Re: 062 Vortec Head Test a Success Car goes 10.92

By what you posted the weight has increased.....
by F-BIRD'88
Tue Aug 11, 2020 1:23 am
Forum: Engine Tech
Topic: 062 Vortec Head Test a Success Car goes 10.92
Replies: 24
Views: 1136

Re: 062 Vortec Head Test a Success Car goes 10.92

A different car weight than before?
by F-BIRD'88
Fri Aug 07, 2020 8:54 pm
Forum: Engine Tech
Topic: Cross Ram intakes.
Replies: 23
Views: 895

Re: Cross Ram intakes.

I just cannot see yhis manifold driving well working well on the street with any single 4 bbl carb..
Maybe with 4 rochester 2 bbls (sideways) on a custom top.
Or converted to Port EFi.