Greetings. So I bought a ugly neglected 89 5.7l hard top TA. The iron L98 seized. I acquired an 80,000 mile 1988 Corvette L98 that is in pretty darn good shape as I am tearing it down. Cross hatch visibile, clean and such. Plugs that came out read very well, slight rich no oil burning.

I have a lead on both a super ram by accell and a stealth ram by Holley. I read and searched that the Holley stealth ram flows better, is easier to install etc. Would this require a hood modification?

Also I called Lunati and they mentioned the 20080660 hydraulic cam would be fine with my stock springs, pushrods, valves and 88 aluminum head L98. I have a set of edelbrock long tube headers on the car now that will be going back on it. It has 3.73 gears in back, and a stock stall converter with the 700R4.

https://www.lunatipower.com/efi-hydr...4-279-287.html

Cam info from Lunati: Hydraulic Roller Cam. Has greatly improved power and torque over stock cam. Good idle.; Advertised Duration (Int/Exh): 279/287; Duration @ .050 (Int/Exh): 213/219; Gross Valve Lift (Int/Exh): .447/.471; LSA/ICL: 112/108; Valve Lash (Int/Exh): Hyd/Hyd; RPM Range:1500-5500; Includes: Cam Only


Eventually I want to toss a set of AFR 190 heads on the car. My research shows. That these would be decent to match the Super or Stealth ram and flow great. But that is way in the future.

Also, what should I replace the Multecs injectors with? Some 24lb flavor of modern? I plan on doing my own prom turning.

 

Personal experience here with old stock valve springs. Many of them are barely adequate for a stock engine when new. Add the age and mileage onto them and there is often power to be found with the stock cam and new stronger springs. That cam seems to have fairly aggressive lobes and needs a spring upgrade.

 

You'll have to trim the hood bracing to make the stealthram fit if I'm not mistaken. They barely fit the Camaros, and I do NOT think they fit 'Birds. (without trimming). I think the performance difference between the two is negligible for a 350 with that cam. -Not say it's a bad choice, just that I wouldn't stress over the power differences. Superram carries major cool points when you pop the hood, and it fits with no issues, BUT....it can certainly be a pain to install.

I ran a zz4 cam (little bigger than that Lunati) in my L98 350 and it ran awesome and even passed smog (years ago) on the stock tune. For whatever that's worth to you. ....and also ran a 2400 stall with very good results, although I was running a 3.27 gear.

Also - are the alum head studs screw in? They're press in on the Iron heads. Not a bad idea to upgrade when you upgrade springs.

 

Refresh the heads while they are off and put good springs in now. Both intakes are good and will run nearly same imo. Superram slightly more torque peak but nothing significant

hsr easier to install and work with. But may need to trim hood bracing. Super will clear.

 

There is always the miniram too as well if you have looked at that too. But between those 2 if you have never installed a super ram it's a big pita. The stealth ram is alot easier. To install, change injectors etc by far.

 

Would this be a good cam kit for this motor to wake it up and remove the ancient valve springs?

Even if I don’t end up with a pizza box or mini ram.


https://www.jegs.com/i/Lunati/638/10...SABEgIEF_D_BwE



A buddy has this kit sitting around. It is a flat tappet hydraulic setup, I’m not sure if that’s a downgrade from the hydraulic roller setup this corvette L98 has but this has springs lifters cam timing setup and everything I would need.

Opinions? Or will it just not work?

in import land it’s roller rocker, hydraulic flat tappet cam over bucket and 1-2 brands of various valve springs.

This is all confusing 😮

trying to do this on the semi cheap and all. Real cash must be saved for paint, subframe connectors, welding, rustproofing, suspension and a T56 swap.

 

First, the stealth ram will not fit under a firebird hood, even if you cut the hood frame. If you're building a "stock" type engine, the stealth ram is the best combination. If you can rev a bit, buy a mini ram, TPIS can set you up with a combo (cam, injectors and tune) that will end up costing you less than putting misc parts together.

 

Do not use flat tappets. You have a roller motor, use the roller lifter stuff

 

im going to use an ostrich 2.0 and wideband to datalog it.

Going to them that way means fistfuls of cash. I’ve seen people do the stealth ram under firebird hoods killing the fins and cutting hood bracing. There’s a few threads here on it. Were they wrong ? I could get a bumpy hood if needed or mold a bump into my hood for the power it would give. There has to be a decent cam and spring combo that combined with the ram and headers I have would bump me to mid 300 crank on this thing with the 113 D port heads. Research says they’re slightly below ZZ4 heads in flow. 🧐

Thanks. I’ll skip it, sadly was a good deal too. I didn’t like the idea of going backwards but for the power gains might have been worth it I thought if it all fit.

 

Pretty sure the 113 heads ARE the zz4 heads.

 

Thats what I read. So they can flow decent enough. Just need decent springs, a cam, a proper intake setup.