351 hp rating?

projectfiveo · Jan 18, 2010

anyone know have any idea how much HP a 351 carbd bored .30 over would get. Im not sure on heads or cam, but its a budget build so nothing fancy. I would just like 300HP. Whats stock 351's putting out?

92armyGT · Jan 18, 2010

Stock hp ratings for 351W are 136-240. the 240 being the lightening

FastStang91LX · Jan 18, 2010

Compression is low on 351's make sure you have pistons to bumb that up to make more power.

undercnstrction · Jan 18, 2010

i believe the "standard" 351 in later model vehicles were rated at 210. i have no idea what torque ratings they had.

check with smokedya, he's got a 351 and i think it dynoed at 319hp.

stykthyn · Jan 18, 2010

his 351 isnt quite stock.

200 stock 240 for the lightning with the gt40 heads and intake.

projectfiveo · Jan 19, 2010

so would i be better off building a 302 vs 351 then?

stykthyn · Jan 20, 2010

put a bigger intake and heads on and it will destroy a 302.

Gearbanger 101 · Jan 20, 2010

You'd be better off spending a few bucks on some aluminum heads a decent intake and high flow exhaust and enjoy that extra 49-cid.

projectfiveo · Jan 20, 2010

So a 351 bottom end typhoon intake, gt40x heads with custom cam And longtubes should be decent hp right.

Mr. Rustypwnz · Jan 20, 2010

port the hell out of that intake too.. 75mm tb minimum

SpartaPerformance · Jan 20, 2010

The cam is key!! When selecting make sure you get a cam that has a power band anywhere from 4,500rpm and no more then 6,000rpm. They don't like to rev as high as 302's due to the longer stroke especially stock bottom end.

Venom351R · Jan 20, 2010

Check sig. EFI though

projectfiveo · Jan 20, 2010

Mr. Rustypwnz said:
port the hell out of that intake too.. 75mm tb minimum

is the porting something i can do myself? if it just involves porting opend from 70mm to 75 mm i can do that, but im sure theres more to it. if so what should i expect to pay to get it ported?

Im going to get a rebuild kit of course for bottom end. and sug. on type of pistons to go with, going to be bored .30 over

NIKwoaC · Jan 21, 2010

302 parts make 302 power. Go with 185 heads or bigger and definitely a bigger intake. Trickflow makes some good 351 intakes.

S&B · Jan 21, 2010

projectfiveo said:
is the porting something i can do myself? if it just involves porting opend from 70mm to 75 mm i can do that, but im sure theres more to it. if so what should i expect to pay to get it ported?

Im going to get a rebuild kit of course for bottom end. and sug. on type of pistons to go with, going to be bored .30 over

Just save your time and money and do a 408 that will make power and can be set up to run on your EFI system. I have seen some sweet sweet combo's w/ 408's in them.

351 hp rating?

projectfiveo

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92armyGT

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undercnstrction

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I want to measure mine. It doesn't look that tall.

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351 hp rating?

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