351W "build"

[SleeperT-Bird87]

Ok guys I have a 77 SWB F100 im currently toying with it got a 351W and C4 would like to pep it up a good bit.Just would like some opinions on the setup maybe even h/p guesses.

truck probly weighs in the area of 4k

75 351W stock shortblock (low mile good compression and oil pressure)

Aluminum heads with 175cc intake runner 2.02/1.60 valves

preformer RPM air gap intake

Cam specs
LSA 110*
Lift: .522''/.538''
Duration: 268°/276°
RPM Range: 1800-6200

Will probly run a 750 double pumper and a red pump

2500 stall and a 4.10 gear

may hit it with a lil shot of juice if needed id like it to run some mid to high 7's in the 1/8th

[thevic24]

Re: 351W "build"

do you know the combustion chamber cc? that block is most likely a low comp(8:5.1). 58cc heads would really wake it up some and go good with that cam profile. with that heavy of a truck a vac. secondary with the standard or purple spring *might* be better. if i had to guess, 300-350 hp and somewhere in the 325-375 foot-pounds.

[SleeperT-Bird87]

Re: 351W "build"

do you know the combustion chamber cc? that block is most likely a low comp(8:5.1). 58cc heads would really wake it up some and go good with that cam profile. with that heavy of a truck a vac. secondary with the standard or purple spring *might* be better. if i had to guess, 300-350 hp and somewhere in the 325-375 foot-pounds.

60cc

[thevic24]

Re: 351W "build"

that should be a good set up, just keep in mind that 351w's have heavier than usual rod caps so sustained hi rpm(over 6500) isnt good unless you can get lighter caps. it is a very strong bottem end though so you can juice it good. good luck and let me know how it comes out.
-vic

[SleeperT-Bird87]

Re: 351W "build"

that should be a good set up, just keep in mind that 351w's have heavier than usual rod caps so sustained hi rpm(over 6500) isnt good unless you can get lighter caps. it is a very strong bottem end though so you can juice it good. good luck and let me know how it comes out.
-vic

Im going to try to keep it below 6500 probly 6250 tops

[thevic24]

Re: 351W "build"

that will be just fine. i rev mine to around 6500 every now and then but i have alumnium rods that were way expencive and i probly didnt need them but owell

[smallblockjay]

Re: 351W "build"

Rev it, man! If it doesn't hold up, it wasn't meant to be and it's time to build another.

Sure, It's easy to spend another's money. ;D

I rev my cast bottom end short bock SBC to 7000 at times. A Ford can take that, can't it? > ;D

[min301]

Re: 351W "build"

:

I would step up to a slightly larger port volume, but I see no reason
why it shouldn't make close to 400hp.

[SleeperT-Bird87]

Re: 351W "build"

Got the trans in today this converter is a lil looser in this truck flashes around 2,800 ordered the gear today also went ahead and got a 4.30 for it since it has some tall tires

[thevic24]

Re: 351W "build"

good deal, hows the motor run?

[SleeperT-Bird87]

Re: 351W "build"

good deal, hows the motor run?

As it sits the motor is pretty stock with a 600 holley with longtubes the converter seems to have helped some but shows the lack of gear it has currently weather hasnt cooperated to verify a gain or loss. I ordered the cam today and am working a deal on the heads hope to finish this project up in a couple weeks or so im trying not to get in a real big rush with it as im trying to take the time to clean up and paint some things also.

[shaggn]

Re: 351W "build"

I alomost identical set up my wagon,except run 650 carter,made 317hp/322 tq at the wheels on dyno,gets 20mpg hwy in 3500# sled.

[min301]

Re: 351W "build"

That's about right.


That is a nice combo.

[SleeperT-Bird87]

Re: 351W "build"

good deal, hows the motor run?

As it sits the motor is pretty stock with a 600 holley with longtubes the converter seems to have helped some but shows the lack of gear it has currently weather hasnt cooperated to verify a gain or loss. I ordered the cam today and am working a deal on the heads hope to finish this project up in a couple weeks or so im trying not to get in a real big rush with it as im trying to take the time to clean up and paint some things also.

was able to get some verification of a gain with the trans and converter swap using my gtech unit

previous
11.20@66

current
10.36@67


So it seems im making forward progression now i just need to finish collecting a few parts.cam should be here tuesday

[thevic24]

Re: 351W "build"

excellent, its moving in the right direction 8)