build a 350rwhp 302 for the street possible - Ford Mustang Forum
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post #1 of 24 (permalink) Old 09-22-2010 Thread Starter
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build a 350rwhp 302 for the street possible

ok ready to ditch my gt40 set up ,even tho its done well for me

so is it possible to make a 350rwhp on a stock 302 short-block naturally-aspired fuel injected what h/c/i would do it for me

and yes i already have the little stuff (full exhaust,75mm throttle body,shorty headers,eletric fan,1.6 roller rockers,mass air meter ,fuel injectors to match,and dyno tune)

remember this is my daily driver to school ,cant use longtubes because im in California
b.t.w. in the future 3-6 month ill be doing a 347/331 stroker

1993 5.0 Mustang,93 cobra intake,GT40p heads,3.55 gears,TFS1 cam and a whole lot of other stuff
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post #2 of 24 (permalink) Old 09-22-2010
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I'd say wait till you can do it all at once, then 350 streetable rwhp wont be too hard. Will you be able to do a 347 in California?
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post #3 of 24 (permalink) Old 09-22-2010
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You could do tfs top end kit but Id say even for a 331 you would need new HCI.
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post #4 of 24 (permalink) Old 09-22-2010 Thread Starter
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Ford Short Block - Ford 302 Short Block, 306, 331, 347, 363, Stroker

look at the 347e carb compliant


but how would they even be able to know if i had a 347

1993 5.0 Mustang,93 cobra intake,GT40p heads,3.55 gears,TFS1 cam and a whole lot of other stuff
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post #5 of 24 (permalink) Old 09-22-2010
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You probably wont pass emissions with a 347
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post #6 of 24 (permalink) Old 09-22-2010 Thread Starter
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Quote:
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You probably wont pass emissions with a 347



really why?????

1993 5.0 Mustang,93 cobra intake,GT40p heads,3.55 gears,TFS1 cam and a whole lot of other stuff
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post #7 of 24 (permalink) Old 09-22-2010
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Just depends on the build. I would probably use a custom cam due to CA.
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post #8 of 24 (permalink) Old 09-22-2010
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With more displacement you'll be burning more air and fuel, making more heat, and making more emissions, which they will compare to what your car's 302 should make. Just because it says it's emissions legal does not mean it will actually pass emissions testing.
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post #9 of 24 (permalink) Old 09-22-2010 Thread Starter
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i was going to tell whoever grinds my cam it has to smog in cali

wouldn't you think a new engine vs my 160k mile 302 would burn cleaner even with 47 more cubes

if not i guess 331

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you could always get your setup ready to drop in then take then take the car and do what it takes to pass smog and then yank the motor out and drop in your new setup. I have never had to deal with emissions so I am ignorant to the ins and outs but I would think its been done thousands of times.
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I would wait till you stroke it to start purchasing parts for it. Start saving cause building a good stroker will set you back some trust me.
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350RWHP is going to be 450+HP @ the flywheel. A stroker is going to be the best way to go. The cubic inches will help you get the power. CA emission compliant is the tricky part....most builders if not all will not guarantee it to be emission friendly Unless they paid the big $ to get it tested and certified which last I heard was upwards of 500k per engine design....A few big companies got in major trouble with this because they were not C.A.R.B proved/compliant.

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I built a 302 for a 70 Bronco in CA that dyno'd at 368 hp at the rear wheels using a single 600 cfm Holley 4170 carb, so it's doable.

We used the stock '70 block that was bored .040 over, which is that absolute max for a 302 because of the miles on it.

I port matched the heads and cut them for 1.90 int and 1.60 ext valves and milled for adj valvetrain.

Crank was stock and used forged pistons that ended up giving me a .000 deck height that brought the comp to 10:1.

Went with a Performer RPM cam and manifold for the RPM's of Off-Road and gears.

Changed from stock to MSD ignition. Had everything balanced up to 9k rpm.

Man did it run sweet. Not a twitch at idle. Little more compression than I wanted but it ended up being worth it. lol Just giving you an idea what can be done today since parts and technology have improved alot since 1995.
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Quote:
Originally Posted by Diggerauditor View Post
I built a 302 for a 70 Bronco in CA that dyno'd at 368 hp at the rear wheels using a single 600 cfm Holley 4170 carb, so it's doable.

We used the stock '70 block that was bored .040 over, which is that absolute max for a 302 because of the miles on it.

I port matched the heads and cut them for 1.90 int and 1.60 ext valves and milled for adj valvetrain.

Crank was stock and used forged pistons that ended up giving me a .000 deck height that brought the comp to 10:1.

Went with a Performer RPM cam and manifold for the RPM's of Off-Road and gears.

Changed from stock to MSD ignition. Had everything balanced up to 9k rpm.

Man did it run sweet. Not a twitch at idle. Little more compression than I wanted but it ended up being worth it. lol Just giving you an idea what can be done today since parts and technology have improved alot since 1995.
I would have to see dyno sheets and a buildsheet of parts to believe this. Your telling me you used a 600cfm carb on a 500HP@ flywheel engine!!!??? NO WAY MAN.

on a 408 stroker Edel perf RPM heads w/big valves, 10.1, 235/248 @ 50 573/582 lift cam, 750 double pumper were making 480HP @ flywheel! Your numbers I are highly exaggerated :nogrinner

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Quote:
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I would have to see dyno sheets and a buildsheet of parts to believe this. Your telling me you used a 600cfm carb on a 500HP@ flywheel engine!!!??? NO WAY MAN.
368rwhp = 423 flywheel HP in front of a T5. Certainly possible from a 302 but peak HP would have to be at 6500+rpm.


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