New 347 Estimated Rwhp?

FastDriver

I was uncomfortably high & wearing a helmet

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Sep 19, 2012

#21

• Sep 19, 2012

• #21

Maybe I'm wrong, but I'm thinking the 1 5/8" headers will hold it back a bit. 1 3/4" would be better.

Still, I think it'll be solidly over 400.

 

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mackblaze

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Sep 19, 2012

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Sep 19, 2012

#22

• Sep 19, 2012

• #22

Awesome I've heard good things about the guy who is tuning it, Dez racing in seakonk MA. Hopefully he can get it over 400.

 

fiveohwblow

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#23

• Sep 19, 2012

• #23

Y'all are forgetting stalled auto. That's why my Hp numbers were low and tq numbers higher.

 

MikeH686

Mine is only two inches though.

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#24

• Sep 19, 2012

• #24

Awh but i wanted to see some carnage

 

89stang1

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#25

• Sep 19, 2012

• #25

fiveohwblow said:

Y'all are forgetting stalled auto. That's why my Hp numbers were low and tq numbers higher.

Click to expand...

no actually i said 400rwhp with no problem if he had a stick

 

TOOLOW91

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#26

• Sep 20, 2012

• #26

89stang1 said:

no actually i said 400rwhp with no problem if he had a stick

Click to expand...

Bein that hp threads dont work well here- HIJACK:

89 stang - who tuned your car? as you can see i put a motor in my car shortly after i seen u and a tune is in my future...

 

89stang1

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#27

• Sep 21, 2012

• #27

toolow91 said:

Bein that hp threads dont work well here- HIJACK:

89 stang - who tuned your car? as you can see i put a motor in my car shortly after i seen u and a tune is in my future...

Click to expand...

rick from rnh performance and his tuner at booze brothers performance in pa did mine......but your in ny do you know kevin hand from wicked motorsports?

 

darthcual

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#28

• Sep 21, 2012

• #28

I estimate a banana cream pie. But it's all about how you put that banana cream pie in your mouth. You can have all the bcp you want but if you can't get it into your mouth what good is it?

 

TOOLOW91

If you're the village idiot what's that make me?

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#29

• Sep 21, 2012

• #29

89stang1 said:

rick from rnh performance and his tuner at booze brothers performance in pa did mine......but your in ny do you know kevin hand from wicked motorsports?

Click to expand...

i do not , but i am assuming he is good?

 

89stang1

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#30

• Sep 21, 2012

• #30

toolow91 said:

i do not , but i am assuming he is good?

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hes in central jersey and is known from many happy customers i personally know to be the best around this area

 

jsw81

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#31

• Sep 21, 2012

• #31

This thread is now about this gif:

 

Dino Dino Bambino

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#32

• Sep 22, 2012

• #32

mackblaze said:

Finally getting my 347 back in my notch should be running and be on its way to get tuned within 2weeks. I was curious how much rwhp i should be expecting.

tci 3200 stall
C-4, 3.73's

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Since you have a C4 I'd say 350rwhp/345rwtq.

 

90lxcoupe

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#33

• Sep 23, 2012

• #33

im gonna say around 340-360 rwhp. What valvesprings are on the car? That is where alot of power is gained or lost IMO. Its an area that is looked over often times when people use an off the shelf cam, including myself in the past.

The headers are really going to kill power. Id say go with at least 1 3/4" but if you ever plan on spraying, go with a 1 7/8" The last thing you want to do is hold back the exhaust flow in a nitrous motor. I gained at least 30rwhp going from 1 5/8 headers to 1 7/8''

 

mackblaze

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Sep 24, 2012

#34

• Sep 24, 2012

• #34

Wow, guess I should look into some different headers. 30rwhp is a lot to miss out on because of some headers. Can't remember what valve springs off the top of my head. I'll take a look at the build specs and see what they are. Thanks for the input

 

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90lxcoupe

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#35

• Sep 24, 2012

• #35

mackblaze said:

Wow, guess I should look into some different headers. 30rwhp is a lot to miss out on because of some headers. Can't remember what valve springs off the top of my head. I'll take a look at the build specs and see what they are. Thanks for the input

Click to expand...

The valvesprings should be matched to the cam and installed at a specific height to deliver the correct pressure. You could remove one from the engine, measure the installed height and bring it to a machine shop and they will tell you what the pressure is.