How would you design a max effort street sbc?

Carnut1 · Post by **Carnut1** » Tue Jul 11, 2017 9:39 pm

I am involved with two of these at the moment and I am looking at combos. Not exactly budget and will be pushing some limits. 420+ cubes, nasty 23 degree heads, lots of torque and 7000 rpm. Easy to drive and scary when stepped on. Lots of different ways to get this done and asking for opinions. How would you build it? Thanks, Charlie

bigjoe1 · Post by **bigjoe1** » Tue Jul 11, 2017 9:42 pm

I have built several engines like that=== What is the total budget ?

JOE SHERMAN RACING

Carnut1 · Post by **Carnut1** » Tue Jul 11, 2017 10:07 pm

I figure aftermarket block and stoker kit. Solid or hydraulic roller cam (custom) possible shaft rockers, most likely fuel injection. So I am guessing an easy 10k.

bigjoe1 · Post by **bigjoe1** » Tue Jul 11, 2017 10:12 pm

NOT EVEN CLOSE !

JOE SHERMAN RACING

lefty o · Post by **lefty o** » Tue Jul 11, 2017 10:17 pm

currently still acquiring parts for something similiar, id say 15k would be on the low end and possibly closer to 20, assuming using quality parts.

fdicrasto · Post by **fdicrasto** » Tue Jul 11, 2017 10:18 pm

On your budget, though you give a little room to go up I assume, all used parts.

F-BIRD'88 · Post by **F-BIRD'88** » Tue Jul 11, 2017 10:21 pm

Do uou want "max effort" ? Or do you really wany Max Result.?

There is a big difference.

Post by **GARY C** » Tue Jul 11, 2017 10:54 pm

Carnut1 wrote:I am involved with two of these at the moment and I am looking at combos. Not exactly budget and will be pushing some limits. 420+ cubes, nasty 23 degree heads, lots of torque and 7000 rpm. Easy to drive and scary when stepped on. Lots of different ways to get this done and asking for opinions. How would you build it? Thanks, Charlie

If the 23 degree head is not class mandated and you don't already have intake and headers I would search RacingJunk.com and Ebay for a good used 18 degree top end, a lot of times you can find heads, intake and shaft rockers all together.

BOOT · Post by **BOOT** » Wed Jul 12, 2017 2:52 am

NA I assume? 10k for just motor or you talking the whole shebang IE ignition & efi/carb, power adder. Percent of street vs track? Skill of owner for maintenance, if they plan on not bringing them back for tune up n stuff much.

Sparksalot · Post by **Sparksalot** » Wed Jul 12, 2017 4:45 am

Max effort is in the eye of the beholder and within the constraints of a budget.

First cut on your wants: relatively inexpensive long block with easy positive displacement supercharger. Tons of torque low, 7000 rpm might not be required so parts costs are low for the engine. I've made these things and they have never failed to have satisfied customers driving them everyday on the street.

The other way to go is a hyped up almost race engine which is difficult to live with long term driven on the street. That's the attempt of NA to stay in the game. It simply is unable to defeat physics.

Contemplate what the major manufacturers have done for their maximum performance cars which drive like taxi cabs until the loud pedal is depressed. Every one of them has a supercharger.

Carnut1 · Post by **Carnut1** » Wed Jul 12, 2017 5:00 am

I should have mentioned I have the heads and most of the valve train in stock so that is not part of the budget. Budget can and I am sure will be expanded. Supercharger would get it done but I am hard headed and like na and rpm. I am leaning towards a hydraulic roller due to the excellent luck I have had with them since the late 80's, hell many are still running! Thanks, Charlie

redliner · Post by **redliner** » Wed Jul 12, 2017 5:27 am

OOOOOOHHHHH NOOOOO..... MAX effort AND a sissy girl roller?!?!?!? Tell'em Big Joe....

n2xlr8n · Post by **n2xlr8n** » Wed Jul 12, 2017 7:16 am

I'm of the opinion max effort / high rpm and hydraulic roller are mutually exclusive.

If you must do hydraulic roller, go turbo.

Carnut1 · Post by **Carnut1** » Wed Jul 12, 2017 7:21 am

n2xlr8n wrote:I'm of the opinion max effort / high rpm and hydraulic roller are mutually exclusive.

If you must do hydraulic roller, go turbo.

A quick look at hydraulic roller profiles this morning and that won't cut it. So solid roller it is.

n2xlr8n · Post by **n2xlr8n** » Wed Jul 12, 2017 7:25 am

Carnut1 wrote:
n2xlr8n wrote:I'm of the opinion max effort / high rpm and hydraulic roller are mutually exclusive.

If you must do hydraulic roller, go turbo.
A quick look at hydraulic roller profiles this morning and that won't cut it. So solid roller it is.

If the budget is as you say, I'd have Jones involved, no doubt.

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How would you design a max effort street sbc?

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