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by F-BIRD'88
Mon Oct 26, 2020 1:16 am
Forum: Engine Tech
Topic: 70’s-80’s era low rise single plane intakes
Replies: 6
Views: 174

Re: 70’s-80’s era low rise single plane intakes

Less low mid end torque and not much top end either because the runners were too small VS the racing versions. But were all the rage. Adding a full plenum divider helps. Some had this. Yup easy to cast and fit underhood. (Where there is just no hood room for anything high rise) Some of the ones with...
by F-BIRD'88
Sun Oct 25, 2020 9:06 pm
Forum: Engine Tech
Topic: 360 SBC Build?
Replies: 26
Views: 339

Re: 360 SBC Build?

This is a 67-72 C10 with a Weiand 177.
The Edelbrock mp122hh blower fits under hood on gm pickups... Cannot beat the Street visuals and cannot beat the street performance especially in a truck @6300 ft.
by F-BIRD'88
Sun Oct 25, 2020 8:48 pm
Forum: Engine Tech
Topic: 360 SBC Build?
Replies: 26
Views: 339

Re: 360 SBC Build?

You are so right about trucks and the 3 mph.. Like moving a brick thru the air.. At least the air @6300 ft is thinner. And you can fix that very well with supercharging. Adding 20% real net additional hp to the 327 is easy with a blower. If you will be using this truck (most of the time) at your loc...
by F-BIRD'88
Sun Oct 25, 2020 8:09 pm
Forum: Engine Tech
Topic: 360 SBC Build?
Replies: 26
Views: 339

Re: 360 SBC Build?

It is easy for a guy like you to deepen and increase the radial clearance on the valve reliefs if needed . you can do it by hand.. Why not just supercharge the 327 ..? it will get there easily. This is the best way to get big real power at high elevation. Can cost LESS THAN BUILDING A NEW MOTOR. bol...
by F-BIRD'88
Sun Oct 25, 2020 7:49 pm
Forum: Engine Tech
Topic: 360 SBC Build?
Replies: 26
Views: 339

Re: 360 SBC Build?

You can make 500+ hp (sea level) on a 360 (10.5:1 cr) with nicely ported 2.02 vortecs but not with just any 260 cam. It will need a vortec single plane intake. Cams are cheap so are intakes. This is a walk in the park for a 406. Especially for a guy like you that does his own work. Does this 327 nee...
by F-BIRD'88
Sun Oct 25, 2020 7:44 pm
Forum: Engine Tech
Topic: 360 SBC Build?
Replies: 26
Views: 339

Re: 360 SBC Build?

I have a simple Vortec head 406 sbc it did not cost me $5k.
by F-BIRD'88
Sun Oct 25, 2020 7:41 pm
Forum: Engine Tech
Topic: 360 SBC Build?
Replies: 26
Views: 339

Re: 360 SBC Build?

With your very limited info,,,, I estimate you need 65 more real horsepower.. The 360 cam get there but the 406 (especially with its huge torque advantage) gets there much better @ 4100#. A single plane is going to be better if you want to rev it up up.. Intakes are cheap.. correct cams are cheap. 1...
by F-BIRD'88
Sun Oct 25, 2020 7:33 pm
Forum: Engine Tech
Topic: 360 SBC Build?
Replies: 26
Views: 339

Re: 360 SBC Build?

Why are you backing yourself into a corner with a "260 deg cam" and a RPM intake if you want to rev it way up?
Seems you are not the 1 making these choices......

I know of off the shelf ft cams that actually will get you there in either the 360 or the 406.
by F-BIRD'88
Sun Oct 25, 2020 7:27 pm
Forum: Engine Tech
Topic: 360 SBC Build?
Replies: 26
Views: 339

Re: 360 SBC Build?

The 406 with vortec heads will make more power but peak out at a lower rpm 6000-6200 . But you can trap rev it as high as you want. to. The valvetrain is the limit. The 406 will make a mountain of torque. Cams are cheap if you want to cam it to get "after power" Gears are cheap too.. 255 cfm on a 2....
by F-BIRD'88
Sun Oct 25, 2020 5:01 pm
Forum: Engine Tech
Topic: 360 SBC Build?
Replies: 26
Views: 339

Re: 360 SBC Build?

What ET MPH is the lil 327 running now? car weight.?
by F-BIRD'88
Sun Oct 25, 2020 4:46 pm
Forum: Engine Tech
Topic: 360 SBC Build?
Replies: 26
Views: 339

Re: 360 SBC Build?

If you already have a usable 400 sbc block and crank there go straight to that.... Watch the 406 compression ratio if Pump gas is required with 64cc vortec heads.
You won't regret the 406 SBC..
by F-BIRD'88
Sun Oct 25, 2020 4:18 pm
Forum: Engine Tech
Topic: 360 SBC Build?
Replies: 26
Views: 339

Re: 360 SBC Build?

It is going to depend on the cams LSA and installed intake centerline. If 106 lsa in on say 102 deg the VTP clearance will be a bit less than .100" INTAKE (.080" ish) Its the exhaust that counts . Will be fine as long as the cam is advanced like so.. The more cam advance the bigger the critical exha...
by F-BIRD'88
Mon Oct 19, 2020 1:40 pm
Forum: Engine Tech
Topic: Budget 385sbc upgrades...too much compression?
Replies: 17
Views: 903

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

I honestly liked the original combo better. It hit a lot harder right off the bottom, even if it didn’t rev out nearly as well. But...not my car, not my money! This is why I suggested porting the S/R heads and using the shorter duration Spunky 236-242 110 (105/115) comp solid cam. Did the S/R heads...
by F-BIRD'88
Sat Oct 17, 2020 11:37 am
Forum: Engine Tech
Topic: Budget 385sbc upgrades...too much compression?
Replies: 17
Views: 903

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

I'd verify that it will is in fact a 383. check crank. May be just a flat top 350. Why not full port the S/R heads? Use comp XS274S-10. The RPM intake will fit on the vettes that have the fresh air lil cowl hood of f the right air cleaner is used. . Keep the cr UNDER 10.5:1. 91 and 93 Octane are are...
by F-BIRD'88
Thu Oct 15, 2020 8:48 pm
Forum: Engine Tech
Topic: 400 sbc build
Replies: 18
Views: 766

Re: 400 sbc build

Running nos with a 106 lsa cam in your 400 will not slow you down... But when running on the motor you are much better off with a 106 lsa cam than a big 112 lsa cam.

You don't need a " nitrous cam" on this motor ,at this level.

All the cams I suggested will work great with nitrous on your 400.