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#1
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$3000 for a street engine, what would you build?
SO, my uncle has this '66 belvedeere convertible.
It's a 100% street car, but he has a 12.50 Charger, so he still wants it to be fast... It has a crappy, original, numbers matching 361 in it right now with dual 2.5 in exhaust and a Performer intake. He wants it to run 13s, should he build a big block or a small block? This car is also something that needs to handle and something that will work at the cruisers. He doesn't want to spend more than $3000 on the LONG block(does not include things like intake, carb, ignition or headers and do not include the core engine.) My idea was to free up the nose of the car a bit, go with a 360. Stroke the motor to 408 with KB356 pistons($279) and the cast crank($339 + $150 for all the balancing). Would we need to touch the rods or would stock 360s work as long as resized with good bolts? Cam would be simple, Hughes 2430 grind. now, for the heads, thinking Edelbrocks.... Box stock... Dad's idea Basic 383 with the forged 361 crank, Eddy heads, 2430 cam, basic machine work to the block. So, the 383 would probably be quite a bit cheaper, but which one do you think would drive nicer? Parts list? Could anyone put one of these motors together? The car will have 3.23 gears and probably a 2500 stall verter. |
#2
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I'd go the B block route with aluminum heads. Probably a 400 though. Would be about the same weight as an iron head small block. Build it similiar to a small block, it's a short stroke motor so let it wind. You'd have more cubes, more horsepower and torque for less money.
Or RB crank in a 400 block, even more cubes, very docile street manners and abundant torque down low where it can be used. It might be faster than his Charger though. |
#3
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HELL....there is one guy who has a combo for a 4k$(CDN) RB engine that produces 650 HP.
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#4
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I've always wanted to build a peppy 383, one day...
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#5
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I say 400 bb, 440 crank, 440 rods, aftermarket pistons=451, with either the 346 or 456 (I think heads) ported and polished (mild), makes great power, very drivable and it'll still rev past 6k, but like said before: might smoke his racer
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#6
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So Doc, is that fact or fiction? Is it in Canadian dollars?
drag-n |
#7
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Uh, hmm, maybe I'm not doc, or maybe I am what do you mean?
I didn't mention any prices, but if you know a machinist it won't be too much, but I think 500 hp from the 451 can be had for 3k or less. I bought a 400 with a 727 for 200$ (can) a friend gave me the crank and rods, I know a good machinist, he'll do the work on the crank and basically get the block ready (crank turned to specs, balanced, pistons and rods,installed) for 600$ and then I'll spend about 700$ for the head work, so that's 1500$, then I need a carb and an intake, say swap meet, 800$, 350$ for a cam, all that is 2650$ minus about 40% (can to USD)= 1590$, so that still leaves 1410$ usd for what ever else you might need (ingnition, headers, etc...) |
#8
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451 for sure. You can build the whole thing for the money you're talking about.
No benefit to the 361 crank in the 383. The 383 is forged already(unless it's a real oddball) |
#9
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'71 383 is a cast cranker. Not really an odd ball, just the way she is!
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#10
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I like Dad's idea, except I'd probably go with mildly prepping the 71 heads on the 383 if they are in good shape. The Edelbrocks are nice, but unless you're going for large horsepower, the factory heads are definetly useable. But, if you don't have access to good cylinder head work, the Edelbrocks may be the easier way to go. Does he want high or low 13s? High 13s should be easily attainable with a decent 383 and not too radical gearing.
Low 13s would be another matter, though the extra weight of a convertible should also be a consideration. |
#11
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Well, if you do use the 361 crank, you will for sure need a balance.
I believe you, but I've never seen a cast 383. There was a forged 400, so I didn't think it went the other way too. |
#12
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what about the 440 crank in a 383? that's 426 cubes, and shouldn't make that much less power than a 451, maybe 30 hp?
or is there more to it, like valve shrouding and etc with the 2.18 valves in the bigger heads...? i was contemplating this myself because a 426 dart would be cool, and i already have a 383 |
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