alright so im new here and im building a lt1 for my 89 camaro and im wanting to runn 2.02 intake valves and im wondering where i can find some because i didnt no if there any differnt from a normal 2.02 and im also wondering valve stem size differs or what
so any suggestions would be appretiated

also looking into another camshaft then what i already have
what kind of lobe seperation do they like and duriation?

 

Those are common SBC 11/32 stem sized valves. Gona be a bit pricey to change your heads from 1.94 to 2.02. Doubt you will see the full benefit of changing it.

Stock LT1s in F bodies had either 116 LSA or 117. LT4's had 115 LSA.

Duration varied from 200 to 210.

 

so u think it wont make a differnece by changing the valves?
even with a aftermarket cam

alrigh my cam has LSA 112 and duration .050 of 212int218exh
with a gross valve lift of .488int .495exh

do u think this cam is even worth putting in?

 

What are your goals? It's hard for anyone to suggest anything without knowing how fast you want to go. With a cam that small, you'd be able to run it on stock heads.

 

I'm trying to build a street drag combo with decent fuel economy the cam I already have is a lil small for what I want it was in a 305 I used to have and had 2k miles on it n I'm. On a slight buget considering I'm in high school still n I'm 17 but I'm looking for a mild cam in it but sumthin tht give me some upper rpms and sum good power
Any suggestion on cams?

 

And I'm tryn to build the car to run mid to high 12s

 

Too large a valve without the corresponding correctly done head bowl work will not gain you any flow. The valve will be shrouded to the extent it may flow worse than a 2.00" valve. I have 500HP through a 2.00" intake valve. Bigger is not always better.

 

alright so your saying im jumping the gun a little on the valves sense i wont have a large enough cam

also portin and polishing ive heard these are tricky heads to port and polich but i dont know why they would be much differnt from other sbc heads and ya also was going to do that the heads and manifold just gasket match them ?