I am thinking about getting SLP's high performance cam from Summit, and want to know if I can install it without pulling my motor, or un hooking the motor mounts.

Can't I just remove the radaitor and pull it that way?

Thanks

Also, SLP recomends atleast 3:70 gears and a loose converter. If I only have 3:23 gears will I be alright?

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1992 Z28 5.7 TPI 700R-4
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To many mods to list.

[This message has been edited by GOFASTER (edited July 23, 2000).]

[This message has been edited by GOFASTER (edited July 23, 2000).]

 

Yep, you can just remove the radiator/condensor and have enough room to slide the new cam in.

 

<a href="http://www.mindspring.com/~recaro_ta/proc/caminst.htm">In-car Camshaft Installation</a>

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He who hesitates,... is lost!

[This message has been edited by 88IROCs (edited July 23, 2000).]

 

MeanYellowZ has some pics about that............................
.................

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THAT'S RIGHT!
http://www.geocities.com/my1986transam
86' Pontiac Trans Am
305 LG4, 3.73 richmond rear

 

A few notes:

1. DO NOT remove the condensor until the a/c system is purged. If you are unfamiliar with a safe method to purge the system, have a qualified shop do it. It is very illegal(and dangerous) to vent the refrigerant to atmosphere.

2. You do not mention what other mods you have made, but unless you have substantially enhanced the flow on the intake and exhaust side, the SLP big cam would be a waste. You might want to consider the smaller cam. Bigger is not always better.

3. Comp Cams has Xtreme Energy cams with the same specs as SLP's cams. XR258HR-10 has 206/212(dur. @ 0.050") and .480/.487" lift. XR276HR-10 has 224/230(dur. @ 0.050") and .502/.510 lift. In addition they have two cams, XR264HR-10 and XR270HR-10, in between those two camshafts. If you shop around, you can probably get the Comp Cam's for $25 less than Summit's price on the SLP cams.

4. Speed Density cars(90 -92) are more sensitive to changes in manifold pressure, and will <u>almost always</u> require a recalibrated PROM to work properly with a new cam. You might want to look at the total cost of this swap, before you proceed.

5. Good Luck!

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He who hesitates,... is lost!

 

So I am going to need a PROM burrned to go with a new cam?

I have good flow (exhaust), that would help with the bigger cam. Before I install the cam, I will get headers. The rest of my system is wide open (no cats), sounds great.

Thanks

 

I am, by no means, an expert on speed density motors. I have manged to pick up a fair amount of material on TPI motors. Here is the way I understand it:

On a speed density motor, the amount of air being inducted is not measured(as on a MAF motor). Rather the load(vacuum) is measured by the MAP sensor. The ECM uses this value, along with engine speed to look-up the correct value of fuel that needs to be injected. The look-up is done on a map chart of load vs rpm. As you flow more air into and out of the engine, the load(vacuum), at a given rpm, changes and the ECM has a harder time correlating the load with the measured rpm.

A recalibrated PROM, should give the ECM an accurate chart from which to reference load at a given rpm: therefore allowing it to inject the proper amount of fuel for the current amount of air.

Hopefully, one of the SD guru's will jump in, and explain this in clearer terms. However, I believe your current setup, and especially your proposed one, would need a custom PROM to deliver the optimum amount of fuel.

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He who hesitates,... is lost!

 

Speed density isnt as bad as everyone makes it out to be. I'll leave them to comment on why.

Which SLP cam? The 224/232 cam WILL need a chip no matter if its MAF or SD. The next one down might work either way.

 

Crane makes a compucam that works well in computer controlled cars. The profile is not real aggressive, but if the car is your daily driver this should be what you need.