building a 306

surfsup · 08-15-2005, 08:14 PM

I have a spare block that I’m having bored out to a 306, is there anything special I should have done to the block, crank? Should the stock rods be replaced? Is there one piston better then the other? What’s the difference between forged and Hypereutectic pistons? Any help you guys can give would be great. what i am adding to the motor is a e303 cam. new roller timing chain, gt 40 P heads, and a air gap manifold with a 650 holley double pump carb.

Gearhead999 · 08-16-2005, 05:28 PM

I'd align bore/hone it too. Have the crank turned, no more then .010 undersize.
If it's a street car without NOS, Super/TurboCharger Hypereutectic will work OK. Anything wilder or NOS go with Forged.

You can have your rods redone [sized and better rod bolts] or buy a set already done.

rwhite65 · 08-18-2005, 09:03 PM

anything with boost and nitrous, only forged. Only one of them in minimal amounts then u could run the hypers.
Ryan

08-15-2005, 08:14 PM	#1
surfsup Registered Member Join Date: Sep 2004 Location: jersey Posts: 147	building a 306 I have a spare block that I’m having bored out to a 306, is there anything special I should have done to the block, crank? Should the stock rods be replaced? Is there one piston better then the other? What’s the difference between forged and Hypereutectic pistons? Any help you guys can give would be great. what i am adding to the motor is a e303 cam. new roller timing chain, gt 40 P heads, and a air gap manifold with a 650 holley double pump carb. Last edited by surfsup; 08-28-2005 at 12:24 PM..

08-16-2005, 05:28 PM	#2
Gearhead999 Registered Member Join Date: Sep 1998 Location: Oviedo, FL Posts: 992	Re: building a 306 I'd align bore/hone it too. Have the crank turned, no more then .010 undersize. If it's a street car without NOS, Super/TurboCharger Hypereutectic will work OK. Anything wilder or NOS go with Forged. You can have your rods redone [sized and better rod bolts] or buy a set already done. __________________ "Support our Troops" Dave 1968 Cougar 2004 Thunderbird 2007 F150 Harley-Davidson, SuperCrew 1986 LTD 1997 Ranger 1992 Honda Civic

08-18-2005, 09:03 PM	#3
rwhite65 Ride Hard Join Date: Oct 2000 Location: Wyoming IL Posts: 1,094	Re: building a 306 anything with boost and nitrous, only forged. Only one of them in minimal amounts then u could run the hypers. Ryan __________________ 65 Fastback 91 roller 306, H/C/I AOD-Bauman, PI Stallion, 4.10's and traction loc 04 Grand Cherokee Freedom Edition 79 Ford F-250 4x4 - Restored

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