347 questions

[tamanaco]

found an 347 on ebay...with these spec's is this a street engine? Don't want something to wild...
Ford 347 Sportsman 2 bolt main block, 4.030 bore, drilled and tapped to ½” head bolts
4340 Forged Eagle Crank 3.4 stroke “0” Balanced(internally balanced)
Eagle 5.4” forged 4340 H-Beam Rods
SRP Forged Aluminum Pistons, 11-1 Compression Ratio
CompCams Solid Roller Cam and lifters
(ROLLER 31-766-9 288BR-6 / 252/260 at 0.050 .672/ .672 106°)
ATI Super Damper
Billet Aluminum Crank Pulley
Edelbrock Performer RPM Aluminum Heads (pocket ported)
Ferrea Valves 2.02/1.60,
Titanium Retainers and 10 degree locks
Comp Cams Pro Magnum Roller Rockers
7/16” studs
Stud Girdles
Victor Jr. Single Plane Intake (Gasket Matched)
750 Demon Carb
MSD Billet Distributor

[WildBill3]

11-1premium only 672 lift can be done on the street but it's very agressive and you will be adusting valves no shaft rockers with that much lift but it does have girdles,SRP is JE's box brand pistonss they are very good good parts mostly but how many miles is it pro bilt ?

[LoBelly]

I think the Edelbrock spec a max lift of .575in for the Performer RPM heads as delivered.
(although I think the coil bind is bit more)

You can check the specs on the Edelbrock web site - maybe check with the builder to see if they addressed that.

LoBelly

[jdean]

The cam specs, lift and CR are kinda borderline for a street 347. What is your definition for Street use?

Unless they have been changed, there is no way the springs that come stock on the Edelbrock heads will work with a solid roller. The fact that it is a solid roller should tell you to keep the idle time to a bare minium (hard to do on the street, those pesky stop lights etc.) or risk roller lifter bearing failure after as little as a few hundred miles. This often translates into a complete rebuild. I would change the cam to something more streetable if thats where it will be driven often.