You might be able to stroke a 390 to a 427 (I do not know though) but it would not be a true 427 since the bore on a real 427 was larger and there is not enough room in a 390 block for that kind of overbore.....IIRC that is.jerry S said:I would stroke it to 427. That way, you'd have a true BB 427 and not a SB with negative rod ratios. That's just me, what I'd do in your place.
LMan said:Id either pass on it or sell it pronto.
To put it in your car, youd need new exh manifolds and exh hookup, motor mounts, all new accessory bracketry, radiator considerations, plugs are a b*tch to change, the list goes on. All for a motor that stock, weighs at least 150-175 lbs more than your current motor and one a hot 289 would beat in the 1/4 darn near every time.
Did I mention the extra weight wont help your handling?
If you want a stroker, stroke what you have (so to speak). JMO.
Ronstang said:You might be able to stroke a 390 to a 427 (I do not know though) but it would not be a true 427 since the bore on a real 427 was larger and there is not enough room in a 390 block for that kind of overbore.....IIRC that is.
Even a stock 390 would beat a 289 provided you had the traction to keep the tires from going up in smoke.skywalker said:But wouldn't a stroked, hot 390 beat the crap out of a hot 289 on the the 1320?
D.Hearne said:Even a stock 390 would beat a 289 provided you had the traction to keep the tires from going up in smoke.I had a stock 67 fastback 390 Stang that had a 3 speed Toploader, 3.00 geared 9 inch ( open diff) It would run low 14's just the way it was. Another plus is the look the other guy gives when you pop the hood. Nothin like a big block to get peoples attention. You don't need to stroke a 390, just give it a healthy cam,a 10 to 1 comp ratio, a little pocket porting, a set of FPA headers, a 428PI intake, 750 Holley and you've got all the power you'll need. You can spend the money you'll have left over for motor mounts, and stiffer springs. And for the guy who posted that big block Stangs can't be made to handle, I can say from experience, that you're dead wrong.
67GTA-FB429 said:Stroke and bore. 10:1 pistons, port and polish heads, roller valvetrain. You are set, you will have more torque and HP than you know what to do with.
skywalker said:But wouldn't a stroked, hot 390 beat the crap out of a hot 289 on the the 1320?
SandSprite said:IIRC, I think you can only stroke a 360/390 to 410 by using a 428 crank. I don't think you can bore it enough to get 427/428. Could be wrong though.
have a look-see here for a 390 bored and stroked to a 428 ci 525 hp monster:
http://www.proformanceunlimited.com/specs/428_525HP_AAL.html
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