Boss 347

csx7031 · Post by **csx7031** » Mon Sep 29, 2014 9:52 am

Anyone have experience with 347 (8.2 deck) SBF with Boss 302/4V Cleveland heads, 10:1 CR, with Boss 302 dual plane intake and headers? If so, what were results and cam specs?

Thanks,
Chuck

bigjoe1 · Post by **bigjoe1** » Mon Sep 29, 2014 10:57 am

I did one like that a few years ago---Mild solid roller--Pump gas---505 HP, 460 torque

JOE SHERMAN RACING

csx7031 · Post by **csx7031** » Mon Sep 29, 2014 11:27 am

Would you be willing to share the cam specs. Email is c9zx@cox.net. Thanks, Chuck

bigjoe1 · Post by **bigjoe1** » Mon Sep 29, 2014 3:11 pm

I am getting real old and I do not remember, but I will try to look it up for you

JOE SHERMAN RACING

blykins · Post by **blykins** » Mon Sep 29, 2014 3:54 pm

Where do you want to be as far as peak hp rpm? Any head work been done?

RevTheory · Post by **RevTheory** » Mon Sep 29, 2014 4:27 pm

bigjoe1 wrote:I am getting real old and I do not remember, but I will try to look it up for you

JOE SHERMAN RACING

The older the bull, the stiffer the horn

bigjoe1 · Post by **bigjoe1** » Mon Sep 29, 2014 9:07 pm

It does NOT seem so in my case !

JOE SHERMAN RACING

csx7031 · Post by **csx7031** » Tue Sep 30, 2014 9:09 am

bigjoe1 wrote:I am getting real old and I do not remember, but I will try to look it up for you

JOE SHERMAN RACING

Thank you. Chuck

csx7031 · Post by **csx7031** » Tue Sep 30, 2014 9:13 am

blykins wrote:Where do you want to be as far as peak hp rpm? Any head work been done?

6800. Heads 305/196 @.600. Ferrea 6000, 5 angle, guides, short sides, roofs, nothing major. Chuck

mag2555 · Post by **mag2555** » Tue Sep 30, 2014 9:16 am

That stock induction set up is the choke on those motors as the stock heads flow enough to make 575 hp in race trim!
You should not need more than 240 / 240 at .050" with .600" lift to make 500 hp, but as always with those heads the port area and those cubes will make it a 4500 rpm and up motor!

289nate · Post by **289nate** » Tue Sep 30, 2014 1:23 pm

csx7031 wrote:
blykins wrote:Where do you want to be as far as peak hp rpm? Any head work been done?
6800. Heads 305/196 @.600. Ferrea 6000, 5 angle, guides, short sides, roofs, nothing major. Chuck

Might be better to clarify between peak power and desired shift point.

blykins · Post by **blykins** » Tue Sep 30, 2014 1:32 pm

I have experience with these engines and can help.....you want a solid flat tappet or solid roller?

csx7031 · Post by **csx7031** » Tue Sep 30, 2014 3:03 pm

289nate wrote:
csx7031 wrote:
blykins wrote:Where do you want to be as far as peak hp rpm? Any head work been done?
6800. Heads 305/196 @.600. Ferrea 6000, 5 angle, guides, short sides, roofs, nothing major. Chuck
Might be better to clarify between peak power and desired shift point.

7200 shift

piston guy · Post by **piston guy** » Tue Sep 30, 2014 6:24 pm

Solid lifter,
Intake 240-244 at .050 .580-.600 lift
exhaust 246-248 at .050 .550-.560 lift
106*lsa in at 102*s
With a flat top single relief piston and a 58cc head , this will easily rev to 7,200 ( and more) with plenty of below 4,500 punch. I have done more than a few of them. Ditch the stock intake and it's more powerful yet. An 850 dp will be your friend.

csx7031 · Post by **csx7031** » Wed Oct 01, 2014 7:40 pm

BigJoe1, I'm not trying to be a pest, just really want all the results based information I can get. Any luck finding the cam information? Thanks for any and all help, Chuck

Don Terrill’s Speed-Talk

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