What block should I use for my 347?
 

I dont want to build my 347 and have thing blow up on me because the stock block was too weak. What block should i use? A 4 bolt main 302 block? Where would i fing one? Price? Thanks in advance.

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90 GT, Red with white racing stripes. Did the AOD-T5 swap, Steeda Tri-Ax shifter, Factory sun roof and armrest delete, Pace setter off-road H pipe, Flows, Ford Racing aluminim driveshaft, Auto Meter Sport Comp Silver tach, and a K&N filter.

I think you can find one anywhere from 800-1500 bucks..
The stock block is good to about 500-550hp..

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347 Stroker Motor: Balanced, Tremec, Extrude Ported and Polished Upper and ported Lower, GT40 Milled Ported and Polished Heads, B303 Cam, 30lb Bosch Injectors, Holley AFPR, March Pulleys, Perma-Cool Fan, 3-Core Radiator, Accel Performance Coil, Accel 300+ Wires, Ram Air, K&N, 73mm MAF, 70mm TB, FlowMaster w/BBK Offroad H-Pipe, BBK Headers, Hurst Shifter, 3:73 Gears, Ram Clutch, Cross Drilled Rotors, AC, smog, and rear seat deleted, battery relocated
Awaiting new heads, intake, custom cam

How many hp is a 4 bolt block good to? Any other block suggestions? Myabe something with thicker cylinder walls? Do i even need to worry about that?

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90 GT, Red with white racing stripes. Did the AOD-T5 swap, Steeda Tri-Ax shifter, Factory sun roof and armrest delete, Pace setter off-road H pipe, Flows, Ford Racing aluminim driveshaft, Auto Meter Sport Comp Silver tach, and a K&N filter.

Just use the stock block. The block you want is like $1000-$1500+. Anyway if your going make enough power to fug up your block, take in mind that your T-5 will FAIL alot sooner than your block will. Just a thought...

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-1989 GT, not stock.
-2000 Camaro SS-A4,
-1989 Chevy S-10, EX. Cab-383, RPM air-gap intake, demon carb., tubbed, trick flow TW heads, trick flow pistons, 6" rod's, etc... autometer phantom gauges, "built" 700R4, roll cage, lexan back window, corbeau seats, R.H.S. 5 harnesses, Fuel cell, convo pro wheels, 15x14's with 29x18.5 M/T'S on back, 15x4's on front, nitrous, 4 inch cowl hood, Ford 9", auburn Pro-series Posi, Pro-billet distributor, Sanderson Jet-hot coated headers, Custom radiator,

Im actually already planning on replacing the t-5 with a tremec when i put the 347 in. What block are you refering to? where can i find one?

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90 GT, Red with white racing stripes. Did the AOD-T5 swap, Steeda Tri-Ax shifter, Factory sun roof and armrest delete, Pace setter off-road H pipe, Flows, Ford Racing aluminim driveshaft, Auto Meter Sport Comp Silver tach, and a K&N filter.

If I were you, and had the money to build a motor(unless your building it yourself)I would just order one from D.S.S. or somewhere like that. They'll put you in the 11's or 10's easy, and be really reliable.



Check out these links.

http://www.dssracing.com/347long.htm

http://www.dssracing.com

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-1989 GT, not stock.
-2000 Camaro SS-A4,
-1989 Chevy S-10, EX. Cab-383, RPM air-gap intake, demon carb., tubbed, trick flow TW heads, trick flow pistons, 6" rod's, etc... autometer phantom gauges, "built" 700R4, roll cage, lexan back window, corbeau seats, R.H.S. 5 harnesses, Fuel cell, convo pro wheels, 15x14's with 29x18.5 M/T'S on back, 15x4's on front, nitrous, 4 inch cowl hood, Ford 9", auburn Pro-series Posi, Pro-billet distributor, Sanderson Jet-hot coated headers, Custom radiator....

#1 If you like getting what you ordered, don't buy from Excessive Motorsports.

#2 The R block cannot be run on the street, period.

#3 Saleen GTS is not running a stock block, he's running a 4 bolt block he got at a garage sale.

#4 The "Sportsman" block is a 351W block, I don't remember ever hearing about a 302 Sportsman block. The A-4 block was the predecessor to the R-4, and it CAN be run on the street.