black95z28

I drive a 95 Z28 with headers, ory, catback, cai, and a 3000 stall and I am looking at the LT4 hot cam kit on summit. I know I will need a new timing chain is there anything else? Also I've heard with the hot cam it doesn't need a tune.

onephatZ28

iTrader: (8)

How old is your water pump? if it has alot of miles on it and you are going to have it off I would put a new one on.

black95z28

Water pump was replaced about 3k ago so it is still good
I was mainly asking about lifters, pushrods, tune

black95z28

Anyone? Also would I need the LT4 knock sensor module

emerica4601

iTrader: (5)

you will not need new lifters, nor pushrods. although you can still drive the car withouth a tune, it is best that you get one, to maximize the perfomrance you can gain from the cam. otherwise, the cam is just making you run richer.

onephatZ28

iTrader: (8)

most people do the LT4 km when they put headers on the car. So, with a cam I think it would be a good idea.

black95z28

Can anyone recommend a good timing chain for the LT4 hot cam

onephatZ28

iTrader: (8)

When I did my cam I just got a stock LT4 timing chain from GM
I had 130K miles on the stock LT1 so I thought the LT4 shoild be good to get me 130 more LOL

ABA383

iTrader: (1)

A stock replacement chain will be fine...You can also get both the gears too and replace the whole set...The stock chain is plenty strong...

--Alan

355z28

iTrader: (8)

^^^agree I would highly suggest cloyes stock replacement chain and gears, you get the solid cam gear like the lt4 ed set has. Melling on the other hand has the slots cut out of the cam gear, i have a picture of one of those gears in 2 peices where the center broke away...so just go to an oreillys store and ask for the 3 peice timing kit.

96capricemgr

iTrader: (1)

The springs in the "kit" may be fine at first with the lightweight LT4 valves but are marginal at best with LT1 valves and will quickly wear to insufficient, the right thing to do is get better springs right away.

If you think you can modify the engine without needing a retune I suggest you put the wrenches down and step away from the car till you learn better.

The HOT cam works fine but nothing more, for the expense and effort involved I would strongly recommend more research first.

black95z28

This is why I was trying to find out some information i'm sorry I don't KNOW IT ALL like you. I had heard the hot cam didn't require an immediate tune because it is a very mild cam.

ABA383

iTrader: (1)

I don't want to speak for 96caprice, but I think he and to some extent, myself have seen some crazy advice and some really bad decisions made based on some misleading info on these, and other forums...The HOT cam is not bad, but there are better off the shelf cams that retain the drivability and smaller duration with bigger lifts that these motors love...To get the most of any cam you really need to tune the computer for the cam otherwise you are wasting your time and money on the swap...

I have used and recommend LPEs 211/219 .533/.560 on a 112 lsa cam...Imho its better than the HOT cam really wakes the motors up...If you call LPE they can set you up with all the necessary parts to do the swap, but you'll still need a tune to get the most from the cam swap...There's also the Comp cams 305 and 503 both are samller duration, larger lift cams...

Like I said before, the HOT cam is an OK choice, but there are better ones...Why not research all of them before you swap cams, which is no small job...Lots of your cam decisions will also ride on what your goals for the car are....Take your time and look around a bit..Good luck...

--Alan