What do you think of this 512 stroker build?

[Paul G]

Local craigslist add. How is this engine going to perform? He claims 650 to 700 HP? What will it truely make for power and how streetable will it be? Or, is it more of a race type build?

http://phoenix.craigslist.org/wvl/pts/3173492966.html

I have for sale a 512 cid stroker. 650-700 hp
Block;
1971 pax, cut .030" over, decked, line bored, honed to 4.350" final bore.
rotating assy; 440 Source stroker kit # 440-512-5071 ( fully balanced)
Crank; 4340 forged ( 4.250" stroke)
Rods; forged 'H' beam w/ ARP8740 bolts
Pistons; forged platinum series- full floating pins- flat tops. Comp. ratio: 11.29:1
Rings; Total Seal Moly file to fit.
Oil pump; Melling HV
Dual Idler Gear Drive w/ Mopar crome cover
Cam; Mopar performance " Purple" solid cam w/ mushroom lifters. Part # P3690588
specs; .654" lift, 316' deg duration, centerline @ 107'
matching springs; Mopar # P3462887
Pushrods; Crane Chromoly 3/8" custom cut.
Harmonic balancer; SFI cert. Fluid Damper- chrome
Heads; 440 Source ' Stealth' Aluminum.
specs; 2.14" int. 1.81" exh. stainless valves
212cc int port vol. 290 cfm flow
Rockers; 'Stealth' alum. roller tip and roller shaft bearings. HD steel shafts, 1.5 ratio
Cast alum valve covers
Mopar alum water pump housing w/ electric water pump ( Meziere)
Oil pan; 7" deep center sump- gold irridite plated
Intake; Edelbrock Torker ll


Asking $ 5000.00 wich is how much I got into it in parts and machine work. I'll take the hit on the assembly of it.
* this engine comes with a warranty.
I have receipts and the bobweight card from the ballance.
P.S. Will consider partial trade- small pick-up + cash.

[cdr]

cam is not very streetable,un ported stealth heads dont flow 290 cfm,more like 267cfm out of the box,capable of about 550 hp,,, at 290 cfm would be 597 hp  

[FLG]

Stay away. If it was unassembled and less id say its a deal...assembled you have NO idea how good or bad the work is. Also those rocker arms and hold downs are garbage and will need to be replaced. Cam is old school purple grind, again youd want to change that as well.

Baffles me why youd spend so much on an engine only to throw in an outdated cam, cheap as all hell rocker arms/hold downs, probably didnt replace the keepers on the stealth heads either which are another weak point. IMO that motor might be good, but in the long run its a grenade waiting to explode, on the top end anyways.

Also chances are that oil pan isnt going to clear your subframe without some work, so that would be another added expense.

Ive only bought 1 motor that was buttoned up and sight unseen (Ford 427 dirt cheap, and that turned out to be a CJ motor so i got lucky big time) but besides that never bought a motor that was buttoned up, new or used. And ive had quite a few 440's laying around at one time (5-6 of em) for used id tell em i want to pop off the heads...if there is no cylinder wall issues ill buy it, if there is ill gladly put the head back on for ya but im not buying the motor. There are some guys on here id trust, no one on craigslist. Ive gotten lucky once, id never take that chance again.

[Chryco Psycho]

it may be worth looking at , I would have all the machine work checked & replace cam & rockers for sure

[heyoldguy]

Looks like a hodge-podge of mostly good parts but not really suited to each other. It IS one of the most interesting builds I have seen in a long time. I kinda like it. It appears to be a mild race motor (550 HP) that will run on pump gas and idle like a 900 HP engine. Is that what you want?

The cylinder heads would need to be worked to even begin to be able to use the camshaft. I would think that the rockers would need replacing because of the spring loads required to use the mushroom tappet cam and the "Battleship" springs.

The dollar value of parts and machine work, if done correctly, is there, but it would need the investment of a new gasket set and the time to completely disassemble and measure and inspect every part and all clearances.

[Rolling_Thunder]

I would agree with about 550hp...   the heads are the limiting factor...    also that cam sounds pretty nasty for the street...   

[Paul G]

It appears to be a mild race motor (550 HP) that will run on pump gas and idle like a 900 HP engine. Is that what you want?

I am leaning that way. Who wouldnt like a grossly over powered street cruiser. And the more I research options, the more I want to go that way.

This add looked promising. But if I need to tear it down to make sure it was done correctly, and swap in better parts, then why not just start from scratch and build it one time?

[Scaregrabber]

The parts look pretty good although the camshaft is old technology, I also am not crazy about the rockers, the gear drive and the intake. I don't like that Fram filter, most good engine people do not use FRAM oil filters these days (it just puts doubt in my mind about quality of other parts). It would have to be priced $1500 under the price of the parts and machining for me. That would leave wiggle room for taking it down for an inspection and tailoring a few parts to suit your needs. Otherwise why not build your own?
I would expect to pay $1500 at least to get the heads ported and checked over, the gear drive could be a junker that needs replacing, same for the balancer and the rockers.

Sheldon

[surmanajaja]

Ive only bought 1 motor that was buttoned up and sight unseen (Ford 427 dirt cheap, and that turned out to be a CJ motor so i got lucky big time)

no such thing as a 427 CJ ford. was it an FE 428cj or 385 series 429cj?

[FLG]

Honestly I'm going back 4+ years wasn't 429 must have been 428.....stopped caring about  ford stuff when I got the mopar lol

Just checked old emails was 428. All I know is I paid something like 1200 and sold it for like 4k or so. Basically paid for the charger.

[cdr]

Honestly I'm going back 4+ years wasn't 429 must have been 428.....stopped caring about  ford stuff when I got the mopar lol

Just checked old emails was 428. All I know is I paid something like 1200 and sold it for like 4k or so. Basically paid for the charger.

OR A 427 SIDE OILER       
427 Ford Engine Parts
www.perogie.com/427.htm
The 427 Ford engine is perhaps the most respected power plant in Ford's vintage arsenal. ... Ford used this dominant power plant for many years starting with the 1963 427 low riser, evolving into medium risers, tunnelports .... Cars for Sale ...