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Re: Bench Data
Posted: Wed Sep 04, 2019 2:36 pm
by SpeierRacingHeads
Elroy wrote: ↑Wed Sep 04, 2019 2:28 pm
SpeierRacingHeads wrote: ↑Mon Sep 02, 2019 1:12 pm
String of 500hp and string of 500 torque, peaking at 6200ish
Yes, small solid roller
Walk in the park. 500 tq is more of a challenge than the 500 horsies but neither should be much trouble at all for something with some effort thrown at it. There are out of the box heads that could get that done. I have a suspicion you are intentionally understating your goals because of the TPI///understandable but dynoed with single 4.//solid roller 379 with ported heads and manifold////570 plus or its broken.
It won't make 570 on the dyno I use. The 385, two weeks ago with a 253/260 and true 91 made 547hp. Which on that dyno was 25+ more than other engines of equal size.
BUT, down the street it would have!
Re: Bench Data
Posted: Wed Sep 04, 2019 2:40 pm
by Elroy
They all read low
How often do you ever hear the opposite?
Re: Bench Data
Posted: Wed Sep 04, 2019 3:13 pm
by SpeierRacingHeads
Elroy wrote: ↑Wed Sep 04, 2019 2:40 pm
They all read low
How often do you ever hear the opposite?
If it's not low, that engine is a pooch!
Re: Bench Data
Posted: Wed Sep 04, 2019 10:31 pm
by MELWAY
SpeierRacingHeads wrote: ↑Sun Sep 01, 2019 1:14 pm
nhrastocker wrote: ↑Sat Aug 31, 2019 10:55 pm
Chad,
Many of the fast Chevy Super Stock cylinder heads have been ported and epoxied into an oval intake port.
The first Heads-Up, Dave Layer, cylinder heads I took a look at in the early 1980's, had oval port heads and the car was a record holder in its class.
Every Super Stock head that I do is oval and raised. That is why I wanted to try it on this.
However these flow way too much air to be this small and oval, IMO.
Do the 2 ports sound different. Does the faster oval sound smoother
I thought the biggest reason you would epoxy the floor and make oval. Is to help the ST handle the higher air speed and not seperate/ back up
Correct me if I’m wrong
Re: Bench Data
Posted: Wed Sep 11, 2019 9:37 am
by rdwedge
Chad
What 'short turn height' did you end up with?
Thanks
Mike
Re: Bench Data
Posted: Wed Sep 11, 2019 10:21 am
by SpeierRacingHeads
rdwedge wrote: ↑Wed Sep 11, 2019 9:37 am
Chad
What 'short turn height' did you end up with?
Thanks
Mike
Around 1.000
Re: Bench Data
Posted: Wed Sep 11, 2019 11:08 am
by 77cruiser
SpeierRacingHeads wrote: ↑Mon Sep 02, 2019 1:11 pm
econo racer wrote: ↑Mon Sep 02, 2019 5:43 am
Chad have you made a pass at the drag strip yet? Something to get a baseline from?
It's a street car, I would never race it.
Why not bragging rights or just some personal satisfaction?
I would, just a couple passes.
Re: Bench Data
Posted: Wed Sep 11, 2019 12:33 pm
by rdwedge
rdwedge wrote: ↑
Wed Sep 11, 2019 9:37 am
Chad
What 'short turn height' did you end up with?
Thanks
Mike
Around 1.000
Is that the same height as all your profiler 23 degree heads ?
Re: Bench Data
Posted: Thu Sep 12, 2019 10:07 am
by SpeierRacingHeads
77cruiser wrote: ↑Wed Sep 11, 2019 11:08 am
SpeierRacingHeads wrote: ↑Mon Sep 02, 2019 1:11 pm
econo racer wrote: ↑Mon Sep 02, 2019 5:43 am
Chad have you made a pass at the drag strip yet? Something to get a baseline from?
It's a street car, I would never race it.
Why not bragging rights or just some personal satisfaction?
I would, just a couple passes.
It's possible, but I haven't even thought about it.
Re: Bench Data
Posted: Thu Sep 12, 2019 10:09 am
by SpeierRacingHeads
rdwedge wrote: ↑Wed Sep 11, 2019 12:33 pm
rdwedge wrote: ↑
Wed Sep 11, 2019 9:37 am
Chad
What 'short turn height' did you end up with?
Thanks
Mike
Around 1.000
Is that the same height as all your profiler 23 degree heads ?
No, I have one at .930 and none are over 1.050. I have a few that are canted as well.
Re: Bench Data
Posted: Thu Sep 12, 2019 10:11 am
by SpeierRacingHeads
I did decide to use a set of my 205cc CNC heads, and this manifold. Going to build a plenum box and use my billet TPiS 58mm.
Re: Bench Data
Posted: Fri Sep 13, 2019 10:43 am
by Carnut1
[/attachment]
tpi elbow.jpg
I am guessing something along these lines? I have never flowed anything like this. I know there are manufactured elbows with turning veins to help even the flow through the turn. I can see it working well on a boosted application but may have uneven flow on na. I am interested in what you come up with.
Re: Bench Data
Posted: Fri Sep 13, 2019 1:17 pm
by SpeierRacingHeads
I'm going to have something like this made. And an idea of the manifold.
Re: Bench Data
Posted: Mon Sep 16, 2019 11:25 am
by SpeierRacingHeads
Re: Bench Data
Posted: Mon Sep 16, 2019 11:32 am
by Carnut1
Flow each runner and see what the difference is on the front runners.
