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If your short of 400 hp doubt it will be by much, if you look a the basic 318 400 hp recipe it's 10:1, airgap, magnum heads or something on par and a 230° ish cam, your short on cr but are porting the heads.

And who doesn't like the sound of kicking in the back barrels :)

They don't perform they function and are only used because of rules, those engines would pick up a lot of hp if swapped to a 4 bbl. Could he stay stock 2bbl sure but if looking for more power it one of the most basic upgrades there is.

Makes more sense, but doesn't the OP' 67 273 already have closed chamber heads, and 273 are pretty decent flowing heads especially on 273 cid.

Can't believe so many are against going 4bbl, who the hell wants a performance engine with a two bbl, it's basically free on tap power, it's two bbl 99% of the time and 4bbl when needed no real down side if chosen and setup right. Like people said performer or similar intake, even stock...

Why 308's ? Why ported ? Most would think that 360 heads are over kill nevermind ported on a stock cam, cr, 273.

Never heard anyone ever say aftermarket pistons with same rings are worth X hp over stock other than if it increases cr. You would think aftermarket would all come with the opposite offset if there was more power.

Rear Gears, stall and shift kit, plus a good tune recurving the distributor are possible mods along with your 4bbl and headers upgrade.

It was and found no proof on the dyno that it works, at least for that test. I remember magazine in the 80/90's recommended it also.

I still doubt it but like you said it don't hurt and one dyno test against ain't proof. It's all good :)

I could see why you would try it.

Do what you want, no one stopping you but there's no proof that it works either, that I ever heard of.

In theory but in practice I don't believe there's a power difference between the two but yes seems you can squeeze a bit more cr from aluminum heads and run on pump gas probably less chance of hot spots. I don't know about 25 cfm more, Charles Servedio flowed both and are fairly close to each...

I'd check em still no matter what company, you can do it yourself. Mainly checking valve guide clearances and if the valves seal.

Don't worry about flipping the pistons, stock pistons had an offset and people use to install them other way around thinking it might pick up power, Engine Masters Show debunked it. Doesn't take much to make the stock shortblock into a strong performer, 4bbl cam (regrind) headers and. Heads...

Looks like to be in C you'd be going small block or destroked big block or 361, 340/360 probably be good choices, If going B I'd drop a 440 crank in a 383 making 432-438 could even go 0.070" to 440 bore.

Roadkill's blown 347 2nd gen Camaro had 1100 hp to do 208.791 mph, beating a record in C/Blown Gas Coupe https://www.motortrend.com/features/david-freiburger-breaks-200-mph-club-el-mirage/

I came across this might have some useful info. Performance Trends Blog Just another WordPress weblog Things to Consider Before Top Speed Racing at Bonneville Salt Flats Posted byDennis Gertgen August 19, 2009 Top speed racing is very much like drag racing, but just on a very long track. In...

VEHICLE DATA CODES CARS ENGINE CODE ENGINE CLASS ENGINE DISPLACEMENT 101 Ω ENGINES USING THERMODYNAMIC CYCLE OTHER THAN OTTO 102 AA 501 CID AND OVER 103 A 440 THRU 500 CID 104 B 373 THRU 439 CID 105 C 306 THRU 372 CID 106 D 261 THRU 305 CID 107 E 184 THRU 260 CID 108 F...

So these are the class engine sizes you can run ? What class the car running under ? Is it BVGCC ? The first letters of a car’s classification usually reflect the engine’s displacement but sometimes are even more specific. The most common engines found at Bonneville are pushrod V-8s for the...

I feel you got to know what other guys are doing in that class to try to beat a 28 year old record. Even if the goal is more about experience then ultimately beating the record it still helps to know what you are competing against to help make decisions. Especially how much hp is required.

How much power does the previous record holder make ?

I pretty sure one of the engine shops on here said he stroked a B crank to 3.54 so + 0.17, I imagine you probably could go - 0.17 3.21.

Especially since bottom power ain't much of a concern.

I guess a good thing about pulling plugs easier to move up a class.

Probably a port size for engine size thing, 383 has same bore as 426 and bigger than a 413.

I asked him a question that's it, you guy's are the ones making arguments I'm just replying to your ****. When people go on about dumping torsion bars for coilovers you don't defend stock setup, like F you don't. The OP asked for sbp disc brake solution only RRR offered a real solution for...

No ones forcing anyone to participant in any of my threads. I asked F%&king question to the OP and you all got to crawl up my *** about it, the OP could of answered or ignored and we all could move on with our day. If you guy's want to stop responding stop commenting, or keep commenting and...