UBHSTRY

I have this in another section also, and have searched, but just cant find the right cam.....would this one even work?

Hydraulic flat tappet Basic Operating RPM Range: 2,000-5,600
Intake Duration at 050 inch Lift: 224
Exhaust Duration at 050 inch Lift: 224
Duration at 050 inch Lift: 224 int./224 exh.
Advertised Intake Duration: 298
Advertised Exhaust Duration: 298
Advertised Duration: 298 int./298 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.466 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.466 in.
Valve Lift with Factory Rocker Arm Ratio: 0.466 int./0.466 exh.
Lobe Separation (degrees): 114

If I am not mistaken, and I may be, if you are above 112 lobe seperation, it should be ok?
Its a 383 with perfomer 60909 heads, 24lb injectors, 88 MAF ecm, 1.5 roller rockers. NOT a roller block. And the HSR....should it ever actually ship out from the factory...lol

conlinj

iTrader: (3)

HSR's tend to like cams with around 230 duration, so you should be ok. What cam is that, the rpm range looks a little low

efiguy

iTrader: (2)

That looks like a knock off of an old GM High performance cam.

There are better cams out there if you so desire.

UBHSTRY

Thats actrually a Summit brand cam.

efiguy

iTrader: (2)

Yeah, that's one of many generic grinds that are available from just about everyone.

UBHSTRY

For 50 bucks I'm on my way to pick one up

skirkland1980

iTrader: (2)

Which Summit do you live near?

UBHSTRY

The one near Akron oh. I ended up getting a comp cams 12-363-4

skirkland1980

iTrader: (2)

OK cool. I think your efi will like that cam better.
I have a Summit about 15 miles from me also. Thought you may be using the same one.

UBHSTRY

It's about an hour and a half for me. I'm actually in Pennsylvania .

conlinj

iTrader: (3)

I cant find the specs on the 363, all i see is the 262 or 364

skirkland1980

iTrader: (2)

I think he meant 364.

Thirdgen89GTA

iTrader: (5)

The HSR is alot like the LT1 in terms of where it makes its power.

I hope those shiny heads you have are actually worthy of a 383 and not just stock castings.

A 224* cam on a 383 is pretty darn mild. If you are building more for a Cruise with some time at the strip or just when you wanna have fun the 224* will probably make you pretty happy.

I just bought a LE 231/239 on a 110LSA for my LT1 build. Not going for a Cruiser, though with the 6spd it should still do that.

UBHSTRY

The heads are performer 60909

Thirdgen89GTA

iTrader: (5)

Maybe a split duration cam? The exhaust seems weak.

UBHSTRY

Well this sucks.......the HSR is on 2 month back order according jegs and summit. ugh....no wonder why it never showed up.

So, going to be a few before I can get the intake on....

Thirdgen89GTA

iTrader: (5)

Off the side beat here, but since you are doing a 383. What about a First Injections TPI setup? Should provide PLENTY of flow to feed it, those heads won't be able to beat the First out.

Been a while since i looked at its pricing. But I know there are a few people here who have put down some nice numbers with that intake.

http://www.firstfuelinjection.com/

skirkland1980

iTrader: (2)

I saw one at the summit in Mcdonough on the scratch and dent table. Good thing I'm broke or I would have bought everything.

UBHSTRY

Ithink its going to be tough to beat the 350 bucks for the HSR. I dont know, Ill look around, but looks like the TPI is going back on for the moment tommorow. Ill maybe start looking for a used one.

Thirdgen89GTA

iTrader: (5)

HSR costs more than $350. You need to buy the fuel rail kit with it too, which is another $250 or so. TPI rails are not compatible with the HSR. Those prices are fairly close to what I paid for my HSR swap. By the time I had the fuel lines and everything needed I was $650 in the hole.

Not trying to be antagonistic here, just suggesting alternatives and wanting to see someone else not end up having to buy something else and be delayed.

Unless your buying the HSR used, in which case I could see it going for $350 complete. I think I let mine go for about $450 for everything.

UBHSTRY

Have the other items I needed

conlinj

iTrader: (3)

There is always the pro flo XT from Edelbrock too

UBHSTRY

Thanks for this actually, I am seriously considering it now. The one thing I REALLY like about it, is, it has the TPI awe factor IMO. Tough to beat the spider humping the heads

CradleofFilth08

Yeah, I went and snatched that up, I was going to trade it but that fell through so now I'm looking to get rid of the thing. There's absolutely nothing wrong with it. It was a demo.

UBHSTRY

how much you want?

CradleofFilth08

$580 shipped, mind you it's missing the gaskets.

UBHSTRY

what exactlly is it? Just the HSR intake?

CradleofFilth08

Yeah, it's the Polished version.

LD85

iTrader: (2)

I had a 238/242 - 293/300 @ .592 lift 112 LS and it made great 428RWHP / 458RWTQ on my 406 but the valve overlap caused a lot of fuel smell and I could not tune it out with my FAST XFI,,, so I pulled the cam to have it reground

I just ordered a 228/234 - 284-289 @ .612" lift 114 LS , the new cam will arrive next week, should have results in 2 weeks or so.

https://www.thirdgen.org/forums/alte...fit-under.html