good l98 cam

KPot2004 · 03-09-2006, 10:30 PM

i have everything priced out from summit for the 355 tpi, the only thing i really dont know almost anything about is what cam to get?? i want it to be a good street engine, but it also has to be reliable, nothing to wild. any ideas??. i really know nothing about cams

this is what i have so far

timing chain set part number CCA-2100
trw 30 over pistons and rings part number TRW-8KH631CP30
melling high volume oil pump part number MEL-M55HV
main bearings part number FEM-4663M
rob bearings part number FEM-2555CP
gasket set part number SLP-260-1000

total so far is like around $400 not counting machine work, and lots of other little shit i will need

92zcamaroperson · 03-09-2006, 11:49 PM

what kind of crank and rods are you using? How high do you want to spin the motor? If you poke around in some of the major cam manufacturer's websites they usually have excellent explainations.

Genopsyde · 03-10-2006, 07:26 AM

take a look at comp camps XFI line.

KPot2004 · 03-10-2006, 09:51 AM

well the thing is i really dont know anything about them, like what specs to get or anything like that

wrightz28 · 03-10-2006, 10:10 AM

Anything under a half inch of lift is usually concidered mikd street/strip with durations 220-240 ish.

You want to be concerned with what the top end of the motors requirements are, not the bottom so much. You need to know how much volume of intake and exhaust you need to push and pull with cam. This includes of course, rocker ratios, valve stem length and the like. The summit tech line or comp cams kine should be of assistance.

KPot2004 · 03-10-2006, 11:43 PM

what do u think of this?? its one of the 2 that jegs lists for that series
jegs part number 350-2103

wrightz28 · 03-11-2006, 01:14 AM

A- I dont normally post on weekends, no access and B I don't know what your referring to?

tom3 · 03-12-2006, 10:30 AM

That is an Edelbrock flat tappet low rpm torque cam for a 400 small block. Terrible choice for an L98. You have a roller cam engine with a low rpm intake system that would really work well with a higher lift roller cam and low duration/overlap. I'd sure suggest calling Comp Cams or other manufacturer and get a recommendation. Also, be aware that making a change like this will probably get into changing the injectors and reprogramming the ECM to work with the mods.

92zcamaroperson · 03-12-2006, 11:04 AM

if you dig around on thirdgen.org or ls1tech.com they have full explanations on what all of the specs mean. The cam manufacturers websites will have little things on "how to determine which cam is right for me". Its best to study what a cam does and how it works and then choose a cam. Dont always go off of what other people say because different people will have different ideas on what cam and what specs are good for whatever purposes. A lot of how a cam will act in a motor is determined by the tune. Thats mostly true for newer computer controlled motors but for an l98 you can tune fairly well too. Just do your research.

BTW: dont forget. You have to match whatever cam you get to your stall. If your going to keep the factory stall you want a cam that will make power at low rpms.

I posted this a while ago but ill mention it again. The publisher is HP Books and the book is written by John Lingenfelter. Its call ow to build a performance chevy small block.... or something like that. Good book for anyone wanting to know anything about v-8 chevy as well as v8's and v-6's in general. It explains how cams do what they do in detail.

92zcamaroperson · 03-12-2006, 11:07 AM

Also consider your strong points and stick with them. Your using a tpi injection system which has great low and mid range power but hurts on top end. Consider that while looking at cams and get a cam to match.

92zcamaroperson · 03-12-2006, 11:09 AM

One more thing and ill stop. Go to thirdgen.org and ask this question and look at peoples sigs to see what cams work well. There are a lot more people with l98 motors there that can share a world of experience.

KPot2004 · 03-12-2006, 09:58 PM

what about this?
http://www.jegs.com/webapp/wcs/store...0707&langId=-1

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