461 Double Hump SBC Heads

[jobberone]

I'm thinking of putting another motor in my 65. I have the original 283 which I could rebuild. I could punch it out to 4inches and put a 327 small journal steel crank I have and make a 350/365hp engine or just get a 327 block (my favorite option) and do the same.

I'm looking at some 461 heads. Since I'm not trying to be or even stay close to original, would these be decent flowing heads or would I get more bang for the buck with some newer heads. I'm not going to race so tenths of a second doesn't mean much to me.

Just to add more confusion to the options I've thought about a BB and I have an LT1 with the matching 4L60E I could drop in.

Also is there a way to use the reverse flow heads on the older blocks?

Opinions each and all. Many thanks.

[a1supersport]

How much will you be paying for the 461 heads? I'm sure they'd need the guides and seats worked on, and may even need resurfacing. It'll probably be better to go with aftermarket heads. If you're going for the more "original" look, the 461's would do. Punching out a 283 to 4-inches was do-able back in the old days, when the motors still had "meat" on them. But after all these years, they tend to corrode to the point where you might be able to do it...but how long willl it last. And that's IF you don't "expose" the waterjacket while boring it out. A 327 block would be a good choice. Heck, why not a 350...or a 400...or a big block Chevy...or a Cadillac 500, or...or!!! Oops sorry, got carried away there, heh-heh .

[thepolishmafia1337]

the best street motors usually produce raw torque. something you don't turn a gawd awful amount of rpms id go big block. or stroker. but if you get stuck with doing a sb. iron heads even if they need work are usually more cost effective. if you find the right shop even better. if you spend a total of $500 on machine work on some $150 iron heads youve got some bad ass heads for like $650. id go like 283 .030 over with the 327 crank. thats like a 302 get some iron heads get them worked. go solid roller cam because of the steeper lobes and the bigger lobe seperation, and more lift. go like 12:1 if you can legally and cost conciously. that would be me that combo makes a decent fast revving motor for the street but the comp is a little high for most ppl. if you want more specs lemme know i could go on all day with good motor buildng tips. rpms+speed=dollars squared

[jobberone]

I've decided not to mess with the original block, the 283. I or someone else may want to make the car original so I'm leaving it alone.

If I go the 302 route and I don't think I will, I'll just use a 265 crank in a 350 4 bolt block with the journal kit. That's going to be expensive especially to drive.

I have an LT1 from a 96 Z28 which I might use.

I could go BB but it's cheaper to go with a stroker motor and for that I'll either go crate or build it myself.

The LT1 seems a good way to go.