Hi,

I'm was just doing some searches and I just wanted to know
If a LT4 cam is best for my set up.

stock long block
Edelbrock intake
holley carb 650cfm DP
mallory ignition
full long tube headers and 3" exhaust
manual T-5 trans
3.9 rearend gears (yes it's right )

I'm looking for something give a good HP boost
and more rumble. I want something that is not that
expensive because changes will be made later later.
Also what else should I change out while I'm in there
springs, lifters, retainers? Engine has about 60,000 miles

Another thing I was thinking was getting a LITTLE
head work for 1.60 exhuast valves. Anyone got the price of
that and polishing them? again I'm not bying new stuff
just some hold me over Items for now that will make me happy.


Thanks, for the help

 

"stock long block" doesn't say much, when you don't say what car it's in.
You could put your car info in the sidebar, instead of some goofy useless saying...
sorry, pet peeve here.

Assuming it's a roller block (duh!), then I think the LT4 cam would work alright. You would want to clearance the heads for the higher lift cam. So get the valve guide bosses machined down for a larger cam, and get positive valve stems put on. If you're going to larger valves, large on the intake usually helps more than exhaust. You could do exhaust as well, but i'd do intake first. Then just deshroud the chambers a bit, and maybe smooth out the short side radius and the valve guides in the bowl, while the die grinder is out of course
Springs and retainers would be needed, yes. lifters should be reuseable. New 1.6 rockers could also be added, as a hold me over type of thing. You can use 1.5 on the intake and 1.6 on the exhaust if you wanted. Then leave the 1.50" valve in there.
Not really a carb question is it?