Rough HP estimate

[Speedstang302]

Im going to do a 347 stroker build towards the end of this summer and im just curious what you guys think a rough estimate for HP to the crank would be on the following set-up, i've asked other sites and just got to big a range to be sure..i've guessed around 450-475hp...thanks

Coast High 347 Stroker shortblock
AFR 205cc Heads (5-angle valve job, ported int/exh and bowls)
Harland Sharp 1.7 Roller Rockers
Comp Cams valve springs
Manley Stainless valves
Crane Chromemoly pushrods
Custom Grind Solid Lifter Cam
CHP EFI spyder Intake Manifold
Anderson powerpipe CAI
Accufab 75mm TB
PMAS (pro-m) 80mm MAF
FRPP 36lb Injectors
Aeromotive fuel rail
Aeromotive AFPR
255lph fuel pump
March Underdrive Pullys
MSD pro-billet dist
MSD 10.2mm wires
BBK 1 3/4 Longtubes, 3" bassani o/r h-pipe, flowmaster super 44s
MSD 6al
MSD tfi coil

no A/C, no smog, electric fan w/ fluidyne aluminum radiator..

yeah seems like thats out of a catalogue but i've been planning this for a little while now..remember the estimate is to the crank...thanks again

[Masshole]

to me it depends on the cam specs. but id guess roughly 425-450 right now. could possible hit 500 with a sick tune.

[my86gt]

i would say 460-500, since mine is around 400 to the flywheel

[Speedstang302]

to me it depends on the cam specs. but id guess roughly 425-450 right now. could possible hit 500 with a sick tune.
yeah but cam would be last thing..i'd like a high lift cam but it all depends on what the cam grinder thinks is best for my set-up..im probably going with jay allen to grind one out :)

[Masshole]

yeah but cam would be last thing..i'd like a high lift cam but it all depends on what the cam grinder thinks is best for my set-up..im probably going with jay allen to grind one out :)

more lift equal more RPM's. buddy of mine had an x303 and it had a 7500 redline. he made 486rwhp on DSS 331, all motor. i like RPM's. its all in personal taste tho. oughta be a sout motor tho.

[Speedstang302]

haha thats smart to build a stroker and use old technology like alphabet cams, yea there fine with gt40/explorer set-up but those cams dont make very good power..i've used all of them and only two that i like any of the characteristics of are the b303 and f303..the rest are scrap metal..btw they are ground from used stock 302 roller cams...

[Masshole]

haha thats smart to build a stroker and use old technology like alphabet cams, yea there fine with gt40/explorer set-up but those cams dont make very good power..i've used all of them and only two that i like any of the characteristics of are the b303 and f303..the rest are scrap metal..btw they are ground from used stock 302 roller cams...

they dont make good power??? maybe not as much as custom grind cams. b and e cams are crap. f is a good all around cam, and the x and z cams.... are sick.
my old notch had an f cam with stage 2 TFS head and an f cam. fully balanced and blue printed DSS 331. made 362rwhp while with the previous owner of the motor, he ran S/D with a crap tune, was an auto and had stock manifolds. so if mine made that much, but probally made more when in mine... your will be a decent amount more.

how much is your motor you want gonna cost?? any ideas?

[Speedstang302]

i dont mind the f303 right now its not too bad but its nothing compare to a tfs cam, crane, comp, crower, jesel etc.. they are 15yr old technology, yeah they'll make a little but you're more likely to make more power with most other cams..

well if i dont plan to shoot any N20 at it i'll do the CHP streetfighter 347 which is a stock 302 block, but if i wanna get the NX gemini kit i'll buy the new boss 302 block and have it built to 347

i got a quote from CHP for $1895 for a streetfighter 347, but the boss 302 block is $1795 and dart block is $1995 i may do that..woody over at ford stroker who works with the dart and boss 302 blocks said about $2600-2900 for 347 balanced on a boss 302 or dart block

im thinking about $1k into valvetrain, $1500 for heads, $1k for head work and other stuff....

im imagining around $8k for this motor build..then i've got to do rear end build up, i already have a TKO600 for it, and build suspension a little more...then cowl hood.. might swap over to carb around october when the emissions get dumped...the $$$ are real guess's except quotes

[9greeNotch3]

sounds sick either way

[Speedstang302]

sounds sick either way

yeah i hope to make around 500rwhp N/A...

[my86gt]

you should check into AFM cams

[N2Otorious]

There is a artical in Muscle Mustangs and Fast Fords, Track Terror I believe was the title.

Combination was what you listed except for induction, same heads and block.

331 stroker kit with flat tops
205 AFR Outlaw CNC port job
Edlebrock Victor Intake
750cfm Holley
Kooks headers

533HP, enough where they really should consider a Boss block or better yet the Iron Eagle.

If you get the after market block go BIG on the stroker kit, the boss block has allot more limitations then the Iron Eagle.

[my86gt]

There is a artical in Muscle Mustangs and Fast Fords, Track Terror I believe was the title.

Combination was what you listed except for induction, same heads and block.

331 stroker kit with flat tops
205 AFR Outlaw CNC port job
Edlebrock Victor Intake
750cfm Holley
Kooks headers

533HP, enough where they really should consider a Boss block or better yet the Iron Eagle.

If you get the after market block go BIG on the stroker kit, the boss block has allot more limitations then the Iron Eagle.


that was the first article i went to when i got my magazine. very interesting

[N2Otorious]

that was the first article i went to when i got my magazine. very interesting

That engines power is all in the heads, they were flowing over 300cfm at .700 lift. That's BIG block breathing right there.

I don't remember what cam they were running thou..

[my86gt]

That engines power is all in the heads, they were flowing over 300cfm at .700 lift. That's BIG block breathing right there.

I don't remember what cam they were running thou..

its was a comp cam, here is what they say about it.

solid HI-Tech 0.420-inch lift roller, intake lobe delivering 266 degrees duration at 0.050 inch lift and 302 at 0.020, with 0.0652 net lift with the 1.6 rockers. exhaust lobe was 272 degree at 0.050 and 308 at 0.020 and 0.0652 net lift had an LCA of 108. intake ceterline on 104 degree

[N2Otorious]

its was a comp cam, here is what they say about it.

solid HI-Tech 0.420-inch lift roller, intake lobe delivering 266 degrees duration at 0.050 inch lift and 302 at 0.020, with 0.0652 net lift with the 1.6 rockers. exhaust lobe was 272 degree at 0.050 and 308 at 0.020 and 0.0652 net lift had an LCA of 108. intake ceterline on 104 degree

That is a NASTY mother ******* right there. :woot:

[Speedstang302]

that is a nasty cam...

and i wouldnt do a 331 but yeah that makes good power that one, but the boss block has about a 1300hp limit, and i really dont wanna touch more than about 700 even with N20...

i wanna do EFI for right now and after a little while go carb...

AFM cams? i'll have to check them out...

[N2Otorious]

Personally, if I do a stroker, it'll be a 331 because of the optimal rod stroke angle. a 347 has too much angle and the piston gets forced into both sides of the cylinder on the way up and down. 347 is good for a track only car, but not a street car. with the after market block, add a turbo, and you will end up 700 easy, just turn the gates down, and when you want more, dial in some more boost... :mick: