posted                             

quote:

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Originally posted by 93PONY:
To make good power you need good quality parts....along with proper installation.

1.72 'Cobra' rockers are poor quality crane rockers. I've had a few of them fail when used with heavy valvesprings & aggressive camshafts.

The E cam is not the best camshaft available that'll pass smog.

A stock Cobra intake manifold is VERY restrictive. Fully porting the lower only gets you half way. Having the upper cut apart, fully ported, & shortening the runners is expensive (I'm working on one now & can post some pics). & in the end at best it'll be equivilent to an Edelbrock Performer. For N/A power, the Cobra is a poor choice.

However, in the end you can still make good power with a Cobra intake if you choose your parts correctly & know the limitations of the Intake. Here's an example of a 'nicely done' 93 Cobra motor with AFR's:
http://www.fordmuscle.com/archives/2003/06/afrinstall/

One thing to remember, HP = (TQ/5252)*RPM
In other words, if your motor peaks before ~5900-6000rpm you will make more TQ than HP. If the motor peaks above 6000rpm you will make more HP than TQ.

A Cobra intake manifold will make it extremely difficult to pull the RPM needed to make 320/320. & in order to make 320HP with a Cobra intake on a 302 you'd need roughly 360RWTQ. Haven't seen that done yet on a stock bottom end. The most I've seen is 340RWTQ....which will net you just over 300RWHP with the restrictive Cobra intake.
Swapping to an RPM intake & larger camshaft will raise the RPM & you'd be exchanging low-end TQ for high RPM HP.

Also note: There are no shorty headers that can 'swallow' the wide AFR exhaust port. Port-matching of the header flange will be neccessary.

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posted                             

quote:

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Originally posted by 93PONY:
To make good power you need good quality parts....along with proper installation.

1.72 'Cobra' rockers are poor quality crane rockers. I've had a few of them fail when used with heavy valvesprings & aggressive camshafts.

The E cam is not the best camshaft available that'll pass smog.

A stock Cobra intake manifold is VERY restrictive. Fully porting the lower only gets you half way. Having the upper cut apart, fully ported, & shortening the runners is expensive (I'm working on one now & can post some pics). & in the end at best it'll be equivilent to an Edelbrock Performer. For N/A power, the Cobra is a poor choice.

However, in the end you can still make good power with a Cobra intake if you choose your parts correctly & know the limitations of the Intake. Here's an example of a 'nicely done' 93 Cobra motor with AFR's:
http://www.fordmuscle.com/archives/2003/06/afrinstall/

One thing to remember, HP = (TQ/5252)*RPM
In other words, if your motor peaks before ~5900-6000rpm you will make more TQ than HP. If the motor peaks above 6000rpm you will make more HP than TQ.

A Cobra intake manifold will make it extremely difficult to pull the RPM needed to make 320/320. & in order to make 320HP with a Cobra intake on a 302 you'd need roughly 360RWTQ. Haven't seen that done yet on a stock bottom end. The most I've seen is 340RWTQ....which will net you just over 300RWHP with the restrictive Cobra intake.
Swapping to an RPM intake & larger camshaft will raise the RPM & you'd be exchanging low-end TQ for high RPM HP.

Also note: There are no shorty headers that can 'swallow' the wide AFR exhaust port. Port-matching of the header flange will be neccessary.

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owned

lol.....

welp, what is a better "smog legal cam" that i can get and what intake u reccomend with those heads?

--------------------
http://www.fastgms-teamfast.com
http://www.facebook.com/aop.fresno?ref=ts&fref=ts
Lq9 swap
102 fast intake
Trick flow heads
T rex cam

posted                          

quote:

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Originally posted by F8LSN8K:
all i really want is to run 12's at the track, and spank some ls1's on the street.....it dont really matter to me about the power as long as i can run the 12's and smoke some maros

do i really need all that of what u posted to achieve my above goals?

can it be done with my

-94 cobra(full weight)
-stock ported intake
-ported shorties(cuz i want smog legal)
-165 afr's(smog legal)
-stock rockers
-h pipe no cats
-one chmber flows
-3:73 gears

cant be buying and installin all kinds of shit cuz i dont really have all that much money cuz i cant work, so im trying to make the best of what i got man

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posted                             

quote:

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Originally posted by F8LSN8K:
so basically with what i want to get done (afr's, port matchin and shorties) would or should do the job for me? i know for a fact that it will be at least 300rwhp

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dont put your hopes up there.... alot of people have done HCI on there car and there hopes where 300 RWHP and got very dissapointed with 270-280..... just a lil thought of dont get bumbed out if it happens

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HEART BREAKER

R.I.P Willie Guzman (5ltrsvt) you will be missed brother.
04/24/87 - 11/23/2012

90 lx 347 RIP
86 gt
89 lx- next project

posted                             

quote:

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Originally posted by Pure Stang:

quote:

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Originally posted by F8LSN8K:
so basically with what i want to get done (afr's, port matchin and shorties) would or should do the job for me? i know for a fact that it will be at least 300rwhp

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dont put your hopes up there.... alot of people have done HCI on there car and there hopes where 300 RWHP and got very dissapointed with 270-280..... just a lil thought of dont get bumbed out if it happens

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im sure it wont happen.....i have 250 right now.......alone the heads will give me 50 more hp (at least)

[ June 27, 2007, 06:22 AM: Message edited by: F8LSN8K ]

--------------------
http://www.fastgms-teamfast.com
http://www.facebook.com/aop.fresno?ref=ts&fref=ts
Lq9 swap
102 fast intake
Trick flow heads
T rex cam

posted                             

quote:

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Originally posted by Pure Stang:
i was like that a long time ago... i remmeber i did a CAI, TB and EGR spacer lol i was thinking i was going to make atleast 250... i was 16 didnt know much.... i got the car dynoed and got 210 rwhp and i was pissed i wanted to sell my car and shit... just wanted to share

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posted                             

quote:

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Originally posted by F8LSN8K:
i have 250 right now.......alone the heads will give me 50 more hp (at least) [/QB]

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sign me up!

Shaun - 314rwhp through shorties? mine put down 352 through shorties for a few weeks, remember?

posted                          

quote:

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Originally posted by phil a:

quote:

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Originally posted by F8LSN8K:
i have 250 right now.......alone the heads will give me 50 more hp (at least)

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sign me up!

Shaun - 314rwhp through shorties? mine put down 352 through shorties for a few weeks, remember? [/QB]

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That's right! Forgot about that....although it wasn't exactly a 'stock' bottom end.

--------------------
www.advancedenginedevelopment.com
SCT dealer
Dynotuning

(916)715-7569

posted                             

quote:

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Originally posted by 93PONY:
The most power I've seen out of shorty headers (with off-road exhaust) is 314RWHP....& that motor had a large non-smogable camshaft (.600 lift) & notched pistons. Still ran an 11.99 @114.5mph though...

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posted                             

quote:

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Originally posted by 93PONY:
I'd use an RPM 1 intake (no longer available new) with Competition AFR165 heads, 7/16th stud mount. (or 185's)
Comp cams Pro-Magnum 1.6 rockers
Quality 9-keyway adjustable timing chain
Custom smogable cam
Upgrade to Comp 977 valvesprings with TI retainers
1 3/4" Longtubes (with ported primary flanges to match the heads) & 2.5" off-road exhaust.
Crankshaft scraper
Electric water pump
Race underdrive pullies

That's what I'd do....if not an even bigger camshaft.
Shorty headers can be used but they will reduce power.

The 314/321 Rear Wheel combo was in my wife's 91GT when it had a stock bottom end. Raceweight at that time was around 3300lbs. It was a rockin' little combo.
Ran that time ONCE on a cold day (perfect conditions) with slicks & a 1.70 60ft.

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posted                             

quote:

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Originally posted by 93PONY:
Yes, she had 3.73's with stock axles/track lock. Every rear end is different....some stockers cut 1.5's & don't break, others break with DR's &1.8-1.9 60fts.

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