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before/after 383 dyno results

General engine tech -- Drag Racing to Circle Track

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randy331
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Re: before/after 383 dyno results

Post by randy331 » Sun Apr 14, 2019 12:18 am

It was pulling 10".
Not sure on gain for sure, but it gained something?

Don't have my data emailed to me yet.

Randy

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Re: before/after 383 dyno results

Post by randy331 » Sun Apr 14, 2019 12:27 am


steve cowan
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Re: before/after 383 dyno results

Post by steve cowan » Sun Apr 14, 2019 2:27 am

sounds like sweet music to me =D>
steve c

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Re: before/after 383 dyno results

Post by BradH » Sun Apr 14, 2019 10:04 am

Always nice when a plan comes together.
One big happy PITA to everyone who knows me! :lol:

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Re: before/after 383 dyno results

Post by slo-svt » Sun Apr 14, 2019 1:14 pm

Best pull from first session vs best pull from new session.
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Re: before/after 383 dyno results

Post by PRH » Sun Apr 14, 2019 1:16 pm

Originally you stated the new cam was :
New cam is 267 rx intake lobe and 280 nsc ex lobe on 110* lsa.
So....... 110lsa or 112lsa?
Somewhat handy with a die grinder.

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Re: before/after 383 dyno results

Post by randy331 » Sun Apr 14, 2019 1:55 pm

PRH wrote:
Sun Apr 14, 2019 1:16 pm
Originally you stated the new cam was :
New cam is 267 rx intake lobe and 280 nsc ex lobe on 110* lsa.
So....... 110lsa or 112lsa?
Sorry, yes 110* lsa.
I was looking at lobes and camz for a big block pulling truck engine I'm doing last night when I got home from the dyno.
Too many engines and cams around here lately for me to keep in my memory. LOL
Just looked at the cam card, 110* lsa.

Randy

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Re: before/after 383 dyno results

Post by ClassAct » Sun Apr 14, 2019 3:13 pm

I'm lost until I go back to the first post and read it all again. I can't even remember what heads are on it!!!!! Old age sucks.

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Re: before/after 383 dyno results

Post by zums » Sun Apr 14, 2019 7:16 pm

Were you expecting more
Tom

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Re: before/after 383 dyno results

Post by randy331 » Sun Apr 14, 2019 8:11 pm

zums wrote:
Sun Apr 14, 2019 7:16 pm
Were you expecting more
Tom
No not at all. It's about where I expected it to be.
I like seeing the TQ up 30-40 Lbs and at a higher rpm.
Should help his et.

Randy

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Re: before/after 383 dyno results

Post by zums » Sun Apr 14, 2019 8:23 pm

randy331 wrote:
Sun Apr 14, 2019 8:11 pm
zums wrote:
Sun Apr 14, 2019 7:16 pm
Were you expecting more
Tom
No not at all. It's about where I expected it to be.
I like seeing the TQ up 30-40 Lbs and at a higher rpm.
Should help his et.

Randy
It will definitely help his et, what was the mach with the intake on at max lift
Tom

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Re: before/after 383 dyno results

Post by randy331 » Mon Apr 15, 2019 9:08 am

zums wrote:
Sun Apr 14, 2019 8:23 pm
what was the mach with the intake on at max lift
Well,.. I didn't figure it up. LOL There is a limit to what can be done on this intake without welding on it.
He's already talkin a 400 + cube engine so it will likely get a different intake then.

Randy

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Re: before/after 383 dyno results

Post by sjre » Mon Apr 15, 2019 9:11 am

Randy What happened with the 505 ?

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Re: before/after 383 dyno results

Post by randy331 » Mon Apr 15, 2019 9:42 am

sjre wrote:
Mon Apr 15, 2019 9:11 am
Randy What happened with the 505 ?
It turned out really good.
Ran it on 87 octane fuel and it made 650 LBs of TQ when tuned up and broke in.
He was hoping for 600 LBs but got a bit extra.
Had surprisingly good BSFC#s too. Be interesting to see how it does in the truck.

Had 2 real good productive days on the dyno.
On the dyno all day,... hangin out at a race shop down the road havin some beer flowZ in the evening,.. sittin in the hot tub with beer flowZ at night, dining out,.. HP and racing talk all day.
I think I could get used to that life. LOL

Randy

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Re: before/after 383 dyno results

Post by CGT » Mon Apr 15, 2019 10:03 am

I just finished looking over the data from the 383. I'm really digging the format from ole slo one. Very repeatable smooth engine. Interesting, looks like it liked the 1" spacer better than the 2". DEFINITELY liked the 4500 carb. DEFINITELY liked the smaller header.

It's always interesting to me, to review the data afterwards. Almost always things appear that weren't so evident while the session was taking place. And almost always you have a regret, like another pull you should have made....more rpm, less timing etc. But the sessions seem to be getting more and more productive with less hiccups.


Wish there would have been a little more room to move the cam around...……..


Mark Whiteners carbs run good as usual. Pretty impressive fuel curves....both engines....both carbs.
"If you pick up a starving dog and make him prosperous, He will not bite you. This is the principal difference between a dog and a man"

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