Just like the title.

I talked to Lingenfelter, where I bought my camshaft. And well, the list they gave me is WAY more than I think I need to spend to get these heads ready for this camshaft.

This is the email I recieved from LPE. I really don't need all of this do I? I figured on new springs, retainers, locks. But I wasn't aware I would need new valves, or anything else really.

The part number of our spring is LN0018DBLAS and the titanium retainer is a
LN0025. On the subject of machining this spring will not fit a stock valve
and seat. This spring is designed to use our valves, 27007-1 and a 27037-1
(Intake and Exhaust respective). This is a 2.00" intake and a 1.56" exhaust
valve that are roughly .050" longer than stock. The spring in our
application has a seat pressure of 130 psi and the open pressure is 385 psi.
Our normal machining process requires no machining of the spring seat, so if
you built your heads like ours this spring would be a good "tried and true"
spring.

27007-1(intake valve)...................12.95 each
27037-1(exhaust valve).................12.95 each
LN0018DBLAS(spring)................. 7.49 each
LN0025(retainer).......................... 9.37 each
613-16(locks)...............................29.77 set of 16

So the total for the major parts to build the head like we do would be:

Valves............207.20
Springs..........119.84
Locks............. 29.77
Retainers.......149.92
Total..............506.73

Anyone care to tell me what is BS, and what I really need out of this list? Granted, I don't want to go cheapie, but at the same time spending $500 JUST on parts seems like an unessesary expenditure for an engine that isn't even being built to see 6,000rpm! Hell, if I took it to 5,500rpm I think thats as far as I'd need to go. Considering that most of my sims show max power between 5,000rpm and 5,500rpm.

The camshaft is the LPE 74211 cam.
Valve lift (1.5r) - .500"/.525"
Duration - 211/219 @ .050*
Lobe Sep - 112*

I'm lost here guys, anyone care to help me out?

 

You don't need valves, but you will need new springs, locks, and retainers, AFAIK.

 

like bes217 said, you don't need new valves. I would just get LT4 springs, retainers, and keys. Good for .525 lift and low cost.

Here are the part #'s:
12495494 - LT4 valve spring kit
10212809 - Valve Spring Shim LT4
12495492 - Valve Spring Retainer Kit LT4
12495503 - Valve Spring Keys / Locks Kit

 

I've heard bad things about the LT4 springs. I'll have to check into it more. As far as springs, I do have to place a call to comp cams, and ask them what they have that would work with my heads. I'm also planning on calling other mfg's too. Its just that LPE's list seems way to expensive.

Will the heads need to be machined at all other than a valve job after porting? I'm planning on pocket porting, and short side radius. I don't want to put my LPE cam in there on stock heads. I don't think I'll get very far with that.

PS, I already have parts needed for the increased intake flow. AS&M Semi-siamesed runners. Porting the intake base when it comes off (don't have the $$$ for a aftermarket base). And I'll put headers on it when I get the rest done.

 

buy springs from comp or lunati. i'd trash the factory rotators and get aftermarket retainers. i'd also trash the pull out studs and get screw ins.

 

if you dont trust the LT4 springs. just go with the comp cam 26918's and a set of thier conversion retainers i think they are 747 maybe a 744 cant rermember. Those springs are for an LS1 but with the conversion retainer they fit nicely. I can tell you from experience they work excellent with no problems at all.

 

I called comp cams and was given these two part #'s.


Comp Cams
Springs 26918-16........$194
Retainers 787-16.........$56

I just don't want to be spending crap loads of money on these heads. I eventually want to put a decent set of aftermarket heads on there (was thinking Iron Lightnings 180cc, or something similar). And I will eventually, probably in a year or so.

But at the same time, I'd like to use the camshaft I bought. I don't need to take the car beyond 5,500rpm cause I'm not getting rid of my TPI.

I looked up the part numbers for the LT4 items listed
I noticed that the shims come in packages of 10, while the springs are a set of 16, but the retainers, and the locks are listed as a quantity of one.

Do I need to order 16 retainers, and 16 keys? Or do those come in sets like the LT4 spring kit?

So if I place an order I need...


(1)12495494 - LT4 valve spring kit
(2)10212809 - Valve Spring Shim LT4
(16)12495492 - Valve Spring Retainer Kit LT4
(16)12495503 - Valve Spring Keys / Locks Kit

?

 

Wow looks like their prices have jumped. I dont think I paid more than 150 for the whole setup locks retainers and springs. I also didn't go through comp cams for them though. Shop around and find a better deal on them or just run the LT4 stuff. I don't know your situation but personally I've found its better to wait and save for the stuff your gonna run, as opposed to trying to cobble together something with the cheapest parts that can be found, and doing the job 2 times.

IMHO

CB

 

here is the quantities you need:

(1)12495494 - LT4 valve spring kit
(2)10212809 - Valve Spring Shim LT4
(1)12495492 - Valve Spring Retainer Kit LT4
(1)12495503 - Valve Spring Keys / Locks Kit

Get the parts from www.gmpartsdirect.com, very cheap. These springs are the ones used on ZZ crate engines

 

Okay, that makes sense. Its just a wonder why they dont' list the key's and retainers as a set of parts. Its just Key and retainers as a quantity of 1.

Will the LT4 parts above driop right into the heads after the valve job? Or will the heads need to be machined?

 

If I were you I would put a hold on working on your heads/cam. Take the caqm and set it aside. Save up and buy the heads you want.

If you have to save for a year and drive the car just the way it is, it will be well worth it when you bolt on your AFRs and add the cam. A good det of heads makes all the difference in the world!!!

When I threw on my 195s, WOW!!! and I didnt have a cam swap to up the power even more liek you will, it will be a happy day

Edit: jsut saw you had tbi heads

Edit Edit: I wasnt thinking again, I wanted to say you should do the headers first(youll need em with aftermarket heads), then heads. Add your runners and stuff and see what gains you get. Unless you are dead set of having that cam in NOW... It just hard to invest that money into heads your not planning on keeping. The money you spend on those will easily make up the difference in buying Edelbrocks vs AFRs later. I say SAVE and get the best...

 

But I don't have 083 heads on my car right now. I put a long block 350 in it a while ago. I just looked through their catalog and saw that they had a long block for F-bodies with a engine Vin # of 8. So I said, thats TPI 350. Called up and talked to them. The place I bought it from said it would be exactly like stock, at the time i was ignorant of casting #'s.

Well suffice it to say they put 193 swirl port heads on it, and I couldn't even GET the info on what cam they put in it.
Car ran 15.3 @ 87mph with a 2.023 60' time. No matter what I did I couldn't break 87mph.

I have a set of 083 heads sitting in my garage waiting to be freshened up. Since I'm doing the swap anyways I wanna put the cam in. I know someone who will do a custom chip (3.8TransAm), I just need to buy the parts.

I don't even know if I have a L98 cam in my car!

 

I would think they would fit fine, but does anyone know for sure.. just curious...

 

I am not sure about L98 heads do a search. I remember reading that they must be machined to take over .480 lift but not sure. I am running the LT4 springs on corvette heads with no problems but they can handle more lift without machining.