How to make 350Hp to the wheels

NotchPower · Aug 13, 2007

Whats up guys im plannin on buildin a stock bottom end 302 5.0 out of a crashed 5.0 mustang im lookin to hit 340-350 hp. Im plannin on using the GT-40 aluminum heads and one of there cams not sure yet. I also plan on using the Gt40 (tubular) intake manifold. I think i want to use the DSS main support system and windage tray with a canton deep sump pan. I guess im goin to use 30lbs injectors? and not sure which size throttle body and MAF yet. I have a lot to work out still. I also plan on hittin the motor with a 50-75 shot of the gas to et it over 400. I guess my question would be, can I make 340 HP usin the parts i just listed. Thanks guys

tkareno · Aug 13, 2007

yea you probably can, hci and nos you would be over 400. but if you got money i wouldn't be getting those heads

voodoostang92 · Aug 13, 2007

Yeah I'd get different heads if you can. GT40's are okay but AFR 185's or TFS Twisted Wedges are better and emissions legal, if that's what you're after. I'd look at the Comp Cams XE series of cams.

ShortThrow50 · Aug 14, 2007

Correct me if im wrong but I thought that those heads and intake alone will only net around 260-270 rwhp. So with a 50 -75 shot , you wont be anywhere near 400rwhp

Turkey Sammich · Aug 14, 2007

I'd do TF H/C/I w/Supercharger FTW

87Mustang351 · Aug 14, 2007

sorry for the thread jack but what do u guys think ill make with my 351 with everything in my SIG....crank and rwhp thanks

Foxfan88 · Aug 14, 2007

i seriously doubt those parts would make 350 rwhp. i am guessing 280rwhp, maybe 300 with a tune. but those parts with a supercharger making 8-10 psi would definatly make 350 rwhp, maybe closer to 400 if you get it tuned good.

5spd GT · Aug 14, 2007

Foxfan and shortthrow are right on...those parts are very unlikely to get close to 350rwhp.

Now if you got some extra money (easier said than done), go with AFR 185 heads (you will need aftermarket pistons with deeper/wider valve reliefs), Holley Systemax intake, and a custom cam - www.flowtechinduction.com.

The cam will be critical.

I would get some 1 5/8" longtubes, 70mm throttle body, and a 80mm MAF and higher compression, in the 10.5:1+ range.

Losing some accessories like your air conditioning and power steering will help you with gains...

Gearbanger 101 · Aug 14, 2007

Foxfan88 said:
i seriously doubt those parts would make 350 rwhp. i am guessing 280rwhp, maybe 300 with a tune. but those parts with a supercharger making 8-10 psi would definatly make 350 rwhp, maybe closer to 400 if you get it tuned good.

Yeah, that's about right.

The day I had my Cougar in to get tuned there was an '89GT there getting done before me. He had Edelbrock heads, Cobra intake, stock cam, 70mm T/B, full exhaust and under drive pulleys and he made 298RWHP and 328RWTQ with 94-octane and a good long cool down. The tuner had at this point tuned hundreds of Mustangs and stated this particular one was amongst the strongest he's ever seen. Most of them he said had been putting down about 280-290RWHP with the same bolt-ons.

That being said, he might see 345-350rwhp with the described small hit of nitrous, but otherwise, the only way he's going to measurably increase his power levels N/A (while still remaining streetable) is going to be by adding displacement. And even then it would be close!

82blackpony · Aug 14, 2007

I HAVE the ede rpm 60259 heads and xtreme cam 224/230@50 110-106 lobe- 509/512 lift/////// 10.5 comp, ede rpm intake,kb domes 60 over to a 311///
msd ignition..9 degrees adv and 38 degrees totle timing
plasma molly file to fit rings/arp bolts//rollerrockers from EPW//ede 750carb////hv oil pump,hv wp,BBK headers and a X pipe

stage 3 c4 with a 3200 stall 3.73 gears posi//

a 125 shot in case..hopin i can get 300+rwhp

ihave windsor jrs on//but i have to much comp with 58 cc goingback to rpms with 60cc

nmcgrawj · Aug 14, 2007

The original poster never said rwhp. Hopefully he means at the flywheel cause like everyone else said, it aint gonna happen.

Foxfan88 · Aug 14, 2007

nmcgrawj said:
The original poster never said rwhp. Hopefully he means at the flywheel cause like everyone else said, it aint gonna happen.

in the title it says to the wheels

ShortThrow50 · Aug 14, 2007

nmcgrawj said:
The original poster never said rwhp. Hopefully he means at the flywheel cause like everyone else said, it aint gonna happen.

yes he did

blackened88lx · Aug 14, 2007

5spd GT said:
Foxfan and shortthrow are right on...those parts are very unlikely to get close to 350rwhp.

Now if you got some extra money (easier said than done), go with AFR 185 heads (you will need aftermarket pistons with deeper/wider valve reliefs), Holley Systemax intake, and a custom cam - www.flowtechinduction.com.

The cam will be critical.

I would get some 1 5/8" longtubes, 70mm throttle body, and a 80mm MAF and higher compression, in the 10.5:1+ range.

Losing some accessories like your air conditioning and power steering will help you with gains...

Great suggestions, I agree. Save your money on the main girdle, it won't do anything. Get a good set of heads (AFRs, Twisted Wedges) and a custom cam. I know you said stock bottom end, but I would go with some high compression FORGED pistons. Since you plan on nitrous, higher compression is a great suggestion since it will help your n/a hp a lot, and nitrous loves compression too. I still don't think you will reach 350rwhp without a wicked cam and spinning the thing to the moon though.

r.barn5.0 · Aug 14, 2007

See Sig below .............................

BADMPG · Aug 14, 2007

Shoot for 300 and aim for the rest with more juice...cheaper and easier IMO.

ShortThrow50 · Aug 14, 2007

r.barn5.0 said:
See Sig below .............................

The ENd

5spd GT · Aug 14, 2007

r.barn5.0 said:
See Sig below .............................

I see a 357W (rebuilt 351) in the sig.

I think he was talking about using the stock bottomend (or rebuilt)...

Not a whole 'nother block

Gearbanger 101 · Aug 14, 2007

5spd GT said:
I see a 357W (rebuilt 351) in the sig.

Yup, that's what the poster stated. TSticking with the stock displacement is his goal.

...so I guess it's just not quite the end yet.

ShortThrow50 · Aug 14, 2007

Gearbanger 101 said:
Yup, that's what the poster stated. TSticking with the stock displacement is his goal.

...so I guess it's just not quite the end yet.

I think that he meant that you would need a 351 base to get those kinda numbers with just heads and intake.

How to make 350Hp to the wheels

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