bortous

Is that a hydraulic or a solid roller?

Mickyinks

Solid

bortous

Lsa and advance?

Mickyinks

115+4

bortous

Ok.
This is a 241/253 115 LSA camshaft when converted to hydraulic.

With an IVC of 52 you will certainly have more torque and hp in the lower RPM ranges.
However, I don't think you will be able to rev it as high due to the earlier IVC.
Your previous camshaft had a IVC of 56-57 degrees.
So it is a bit of a difference there.
I think it will drive better than before, definitely have a smoother idle due to having 10 degrees less overlap.
I feel you are making a good move if you are focusing more on driveability.
I would be curious what you think of the top end pull once it's fitted.
Plus these cam motion lobes are not brutal on the valvetrain and you won't need as much spring to control them.

99T/ATIME

iTrader: (3)

Following. Very interested in how this pans out. Good luck OP.

Mickyinks

I changed my mind on the cam and have ordered a low lash solid from cam motion at 252/265 114.5+4.5.
I specced it myself and hope it works how i expect it to.. Will be bumping up comression to 12.25:1 running on 98 (u.s 93)
My heads have been shaved .005, new set of pac 1209X springs shimmed to 185lb seat 518lb open, crower rebuilt my lifters , cometic mlx .038 head gaskets, new cam retainer plate and ill use old oil pump melling standard volume high pressure 12295, bigger engine oil cooler 22in long x 6.5in tall x 2.7in thick.

bortous

I'm liking the new direction here.
Cam specs sre definitely better than what you were originally going with when you last posted.
My personal opinion is that what you are doing now is spot on and the only thing I would slightly alter is putting that cam on a 1 degree later intake centreline to give you an ivc of 54 to help that big engine hang on better in the top end.
Spring pressures are good too.
You shouldn't have any issues.
I do wonder if you will be able to run that high comp on 98 fuel.
The 1 degree later ivc will help with the 98.
I think you may lose some rpm compared to before but it will still be more than adequate.
Look forward to how it comes together.

AINT SKEERED

iTrader: (2)

Nice cam choice. Good springs as well, they control my valves to 8000 easily and my valves are stainless to your titanium.

lazerlemonta

[QUOTE=bortous;20244221]

My personal opinion is that what you are doing now is spot on and the only thing I would slightly alter is putting that cam on a 1 degree later intake centreline to give you an ivc of 54 to help that big engine hang on better in the top end.
/QUOTE]
That 1 degree is always critical...... At least 1.1 Giggawatts left on the table LOL or +/- 1.68437 hp/trq at the wheels. Micky sounds like your headed in the right direction. I like that oil cooler. I may have to put one on myself.

AINT SKEERED

iTrader: (2)

[QUOTE=lazerlemonta;20244241]well it will go 200 rpms more right😂?

bortous

[QUOTE=AINT SKEERED;20244249]200rpm is 200rpm!

AINT SKEERED

iTrader: (2)

[QUOTE=bortous;20244254]he used a head that will allow rpm without going bigger on a cam. He will be fine

bortous

With your 454 power figure was that on a roller dyno or a hub dyno?

Mickyinks

Unsure , they have both . If I guessed I'd say was a hub But Thts guessing. With my cam specs as always it's compromise . Without having to run solely e85 I'm at near max static compression for 98 pump gas, just under ideal dynamic compression , overlap is not excessive, I could get dynamic compression a little higher by going to a 113+4 but then overlap gets up there again . Overall I'll have the best of the compromises inherent with every cam choice. And if I stuff it up I can just try my other cam . I'll try a new cam with every spring change anyway ,

With my oil temps when I'm spinning it hard the oil temp sits around 125 , if I get into it half hearted oil temps go higher. This new cooler should lower temps everywhere by 10 degrees. The good thing to it's $700 cheaper than the same size pwr used by Supercars

Darth_V8r

iTrader: (4)

Wanna know a secret? All cam specs are compromises. You are always having to decide between where you are willing to sacrifice in order to gain what you want.

bortous

If it's a hub dyno the readings will be higher but unsure by how much. Mine will be going on the hub dyno also.
It will be interesting to see if you will be able to get a good timing curve with this new camshaft with the compression you have.
Are the oil temps higher also because it's an iron block?
I got an mxh 520 oil cooler and oil thermostat from improved racing.
i think I will need it.

Mickyinks

I worked that out after talking to you about specs for a cam. one thing that's throwing me a little is how the cam reacts with same int/exh , different lsa and the different overlap that comes with it. With specs of 252/265 I can have overlap from 28 to 37 . How different will more/less overlap have?

bigger is better Bortous when it comes to cooling iron block. So long as you have thermostat go huge... I hv the biggest B&M oil cooler and temps range from 107 to 135.

bortous

Well less overlap will give you a less rowdy idle and maybe more torque in the low-mid rpm ranges.
In fact I think it will because you have a 3-4 degrees earlier IVC point.
But as I said, i also think it will not hang on as well up top like it did before but there is more to it than just specs.
The lobes used also make a difference.
The hydraulic equivalent is a 246/259 and comparing those valve events to your old camshaft, your IVC is 57 vs 53 EVO 65 vs 69.
I think for a 454 that you should advance it 3.5 instead of 4.5 so your overlap is centred on the intake and exhaust side and your IVC is at 54.
I still think the spec is good and you will be happy with it.

In regards to the oil cooler I originally got it for my old engine with no intention of driving the car hard all the time.
I was looking at improved racing's biggest cooler but the price was double and I I would never need it.
Improved racing did tell me that the unit I have has the capability to cool 600hp engines with constant lapping which I will never be doing.

http://www.improvedracing.com/improv...ler-p-886.html

It's their MX 245 model that is top of the line for my vehicle.


The cooler you have is a good one.

Mickyinks

I have old cam ivc 60 new 54.5
old cam evo 68 new 71
old overlap 36 new 30
i