View Single Post
  #1 (permalink)  
Old 01-22-2008, 11:32 PM
SantaFe66 SantaFe66 is offline
Senior Club Cobra Member
Visit my Photo Gallery

 
Join Date: Jul 2003
Location: Santa Fe, NM
Cobra Make, Engine: Cardiac, 428 FE
Posts: 301
Not Ranked     
Default Interpreting a Sonic check - help!

I have loaded a Sonic Check sheet from a shop in Albuquerque on my .030 over, 390 FE block, into my gallery. I want to find out if the block could be bored to 4.13" so that I could use a 428 1UB crank I bought to make it a 428.

I need some help in determining if this is practical or not.

My choices, in order of preference, are:

1) Bore the block to 4.13 and use my refurb'd stock rods, forged pistons, and the 428 crank to build a 428. Plan to use a Hyd. roller cam (KC or Crane) and lifters with E'brock heads and HS roller rockers.

2) If the block won't go to 4.13 safely, bore it .040 over, buy a Scat 4.125 stroker crank, rods, forged pistons, and the same Hyd. roller cam, lifters, etc. to build a 430 cu in engine.

3) Bore it .040 over 390 bore (would be 4.090") and build it as is with 390 crank (refreshed), new forged pistons, E'brock heads, Hyd. roller cam, lifters, etc.

Questions I have are..... Will the block safely go to 4.13? Usage will be strictly spirited street driving with rev limited to 5,800. If not, what would recommendations be for the choices above (or ????? )?

The car weighs 2,700# with a 3.00, 9" Ford rear end and a Richmond 4+1 race course tranny (1:1 5th). Goal is about 450 - 480hp with comparable torque. I will not be racing this car and overheating at my location wouldn't be good (7,000ft, temps to 100F in the summer).

I would appreciate feedback and suggestions from the experts on this forum.

Thanks.

Paul
Reply With Quote