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chris91LX · 12-11-2002, 05:14 PM

I was going to build a 306 over the winter and had a couple questions.

How much, if any, hp gain over the stock 302 short block can I expect with a balanced assembly with the stock crank and rods, in a decked, align honed and .030 over block?

How much torque increase can I expect and will the curve change dramatically?

I've pulled 293rwhp @ 5600 and 316rwtq @ 3900 on my stock 80k mile block with Edel. 6032 heads, TFS Stage 1 cam, ported Cobra intake, 70mm tb, 76mm maf, 24lb inj., 190lph fp, MSD 6AL, pullies, LT headers, o/r h and 2 1/2" cat back. I'll be swapping the top half to the 306 bottom end.

I'll be using either used TRW pistons or the Summit kit with the Speed Pro pistons and rings. Any opinions on rebuild kits are welcome as well. TIA

12-11-2002, 05:14 PM	#1
chris91LX Registered Member Join Date: Oct 1998 Location: Suburban Chicago, Hanover Park Posts: 695	306 rebuild questions. I was going to build a 306 over the winter and had a couple questions. How much, if any, hp gain over the stock 302 short block can I expect with a balanced assembly with the stock crank and rods, in a decked, align honed and .030 over block? How much torque increase can I expect and will the curve change dramatically? I've pulled 293rwhp @ 5600 and 316rwtq @ 3900 on my stock 80k mile block with Edel. 6032 heads, TFS Stage 1 cam, ported Cobra intake, 70mm tb, 76mm maf, 24lb inj., 190lph fp, MSD 6AL, pullies, LT headers, o/r h and 2 1/2" cat back. I'll be swapping the top half to the 306 bottom end. I'll be using either used TRW pistons or the Summit kit with the Speed Pro pistons and rings. Any opinions on rebuild kits are welcome as well. TIA __________________ My Ford Club http://www.midwestfords.org/ Best time N/A 12.9 @ 107 1.711 60' 125 shot - 12.04 @ 113 1.59 60'