How much HP left in 351 combo?

bhleonard

5,936 posts · Joined 2004

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#2 · Apr 25, 2007

I'd tune it.. I'm taking my 393 next month for a flip chip.. N/A and nitrous tunes.. Similar combo to yours (393, TEA TFS Heads, Comp Solid roller, TFS-R intake, 38# fuel system, 3" exhaust.. )

 

torqueboxer Discussion starter

358 posts · Joined 2003

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#3 · Apr 25, 2007

I figured that it would be smashing up against the rev limiter all the time. The heads and intake move lots of air, but, no mattter what i seem to do to the car it always ends up as what i call a torque monster. Tons of mid range but not the "shift it when the rods blow out" kind of top end pull. Peak hp at 5800? that cam is supposed to be 2500-7200rpm. Something must be holding it back. A fast street car to me dedstroys the tires when it gets on the cam(3000rpm) and wants to rev till it gets too scary. it does come on the cam at about 2600 and pull to the rev limiter, but, it is kinda flat feeling. It dosnt "ramp up". Maybe a tune will get it like that.

 

86mustang408w

5,178 posts · Joined 2006

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#4 · Apr 25, 2007

Your cam is pretty healthy. Id say a tune, different intake, and bigger induction components will help.

 

Novi357

2,916 posts · Joined 2000

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#5 · Apr 25, 2007

My experience is that it isn't necessarily the peak horsepower number that gets changed by a tune. A lot of time it is the ability of the tune to clean up the middle of the power band and gain horsepower in the midrange which equates to more average horsepower across the board.

Of course the other parts about cleaning up idle, cold starts, and basic driveability can also happen.

 

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Hatecrow

388 posts · Joined 2002

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#6 · Apr 25, 2007

get the tune, i made 419 to the wheel running threw an automatic so i think you have a lot of hidden power. You cam is way meaner then mine also.

 

autobahnjunky

251 posts · Joined 2005

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#7 · Apr 26, 2007

That TB and MAF look a little small to me and I'd be running 36# or bigger injectors. My car picked up 34 rwhp with some tuning on the dyno.

 

torqueboxer Discussion starter

358 posts · Joined 2003

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#8 · Apr 26, 2007

I never really thought the injectors would be too small. Maybe I'll go old school and hook a vac guage up to the manifold and look for any vac at the top of the rpm range. That should show any airflow restriction. If I remember right there shouldnt be any more than 1" of vac at the top end? Anymore than that and its pulling against the TB. To be honest I really havent been able to find a spot where I can fully run out all four gears. It feels strong but not pure evil like I was hoping. All input is welcome.

 

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BigPimpin'

900 posts · Joined 2006

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#9 · Apr 27, 2007

I would think that if you aren't maxing out the injectors, you are close. Sometimes it isn't peak numbers, but area under the curves.
Take it to the track.