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Dynoed my '66 Mustang! (Video)

1474 Views 15 Replies 4 Participants Last post by  happystang, 
happystang
I've been meaning to do this for so long, the curiosity was killing me.


Specs are as follows:

1995 302 V8
1987 T-5 manual transmission
Edelbrock Performer RPM intake
Holley 600 Vac secondaries
Hedman Headers middys
24inch cherry bomb glasspacks
Xpipe
MSD ignition

Stock rear end, 2.79 gear ratio.

It's pretty stock, I tore it apart replaced all gaskets and cleaned up the carbon build up on the cylinder heads. Motor has maybe 84xxx on it.

A/F read out showed it was running way lean and I still have room for more advance on the timing. Dyno guy said go up at least three jet sizes :kooky:

Now, what everyone wants to hear!

It put down 240 horsepower and 290 ft/lbs of torque at the wheel.

I'm very happy with this number considering my estimate was 200 tops considering they only made 215 new.

1966 Mustang 302 Dyno! - YouTube
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happystang
Lizer said:
no special headers or roller rockers or anything? What are you running for a cam? 240 at the wheels is higher than I would have thought.

Watching dynos always scares me. I'm just always waiting for the engine to blow up because that's what it sounds like it wants to do :kooky:
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Stock cam, stock lifters, stock rocker arms. I was looking into the 1.7 roller rocker swap, I've heard good things about them.

Headers are just regular mid length Hedman's.

And yeah, I never realized how loud the thing is, I thought it was going to kill itself!
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happystang
cindys_sn95 said:
what heads are on it? 240 @ the wheels is EXTREAMLY stout for stock cam and heads.
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Stock heads :)

Yeah I'm shocked too. Did a few runs and it went down to 236 by the time it heated up.
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happystang
cindys_sn95 said:
and they say carbs don't make more HP....:winks
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Seriously!

I upped the jetting from 65 to 69 and what a difference!

Oh and just yesterday I slapped on a set of Crane 1.7 roller rockers, I can't wait to dyno it again :)

Heck I've been looking into a set of Gt40 heads, not sure if I'll go cheap and get a cast iron set and have those rebuilt so I can use my pedestal rockers or just get aluminum ones.
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happystang
Nope, works fine! Love it!

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happystang
Lizer said:
Do another dyno pull with them. I'd really like to see the gains, basically because I do not believe it is anything close to what the manufacturers state. I'd think 5-7 hp.
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I've changed the jets and timing is next, so it wont be definitive on whether or not the rockers did anything, not to mention the dyno is $100 for the runs :(

But I'd be happy with 250 at the wheels after the recent changes.
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happystang
Three. Could have asked for more but it was kinda pointless at that point because the motor heats up giving lower numbers. Also gave me the air fuel ratio.
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