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351C 4v build.

April 5 2009 at 7:17 PM
  (Login chevy2ken)
Member

I have this motor in the shop now, has been bored .030 over, decked, crank ground, ready to pick pistons,
cam, etc to balance rotating assembly. This is a 4 bolt CJ block, with 4V heads that have been seated with
new valves and springs.

This is where I need help. I would like streetable pump gas power, I have heard that one can get 350-400 out
of these guys?

I am building on a budget, not building a dream racecar, but understand I need a stall converter, probably
new rear gears (have 3.00 in a ford 9 inch under a 71 torino). The torino has a tired 351/2v with C4 and 9
inch. Here are my ladies:
http://smg.photobucket.com/albums/v150/kenholloway/

I need to know what other machining I may need I have seen stuff about oil restricter, rerouting oil, etc.

Right now I need to get a flex plate and pistons over to the shop to balance out the crank.

Is that the next step? Any suggestions on pistons? How about keith black KB177 from summit? Somebody
mentioned those...

thanks!
ken

 
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(Login chevy2ken)
Member

And...

April 5 2009, 7:19 PM 

They are the open chamber heads, stock sized valves.

 
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(Login mtdewcowboy)
Member

Re: And...

April 6 2009, 6:36 AM 

Whats your budget?

351C based: 4 Barrel: Engine Kits:

#43 .030 351 4 barr HYDRO 357cid
461 horse 441 torque
BHP ported 4 barrel clev heads
cast steel crank
Steel 4130 I beam rods
FPS forged pistons
moly rings
CL77 bearings
Comp Cams 280h cam and lifters
3/8 pushrods and guide plates
Probe forged roller rockers
Performer Rpm intake
725 Road Demon JR with ford kickdown and manual choke
2@ 1'' phenolic carb spacers
$3850. plus tax and shipping

#44 .030 351 ROLLER 357cid
537 horse and 476 torque
The same as #43 but with roller cam
$4500. plus tax and shipping

#45 .030 351 HYDRO STROKER 383cid
459 horse and 459 torque
The same as #43 but with 383kit
$4000. plus tax and shipping

#46 .030 351 ROLLER STROKER 383cid
540 horse and 496 torque
The same as #44 but with 383kit
$4800. plus tax and shipping

#47 .030 351 HYDRO STROKER 393cid
456 horse and 467 torque
The same as #43 but with 393 kit
$3800. plus tax and shipping

#48 .030 351 ROLLER STROKER 393cid
539 horse and 503 torque
The same as #44 but with 393kit
$4600. plus tax and shipping

#49 .030 351 HYDRO STROKER 410-426 cid
455 horse and 477 torque
The same as #43 but with 410 kit
$3900. plus tax and shipping

#50 .030 351 ROLLER STROKER 410-426cid
540 horse and 514 torque
The same as #44 but with 410 kit
$4800. plus tax and shipping

http://www.barnetthighperformance.com/home.htm

 
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(Login TomZeus)
Member

351 build

October 18 2009, 9:00 AM 

Seems your desired numbers should be easy to hit. I have the same engine but decided to change the heads to the closed chamber heads and run flat top speed pro pistons with the skirt coating, yields a 10.5 to 1 CR. I'm changing intake and carb and porting the heads with a cam in the .560-.580 lift range and a 230 duration at .050/290 advertised. This car will be mostly street driven with some track days. I switched my heads from open chamber because the motor came with the flattops and only gave about an 8.5 to 1 CR. The open chamber heads are more prone to detonation if you put a domed piston. Push you CR a bit with a small dome piston and you can keep your heads. Change the valves to one piece stainless and some good keepers and adequate springs for the cam you choose. The bottom end should easily push 6,000 with no problems...possibly change to ARP rod bolt nuts nuts because you probably have the good rod bolts (my motor has them, little football shaped heads...same bolt that went in the Boss 351c with 180,000psi strength). Bottom end shouldn't give you any fuss for what you are doing. Maybe have the bottom end balanced if you have the $$$.

 
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