Captain InsaneO

iTrader: (38)

Long story short.. the search feature still licks *****. Is it a bad idea to run a 2.055 intake valve on a stock bottom end/displacement LS1 engine? I am assuming the largest cam I'd be able to go with, without flycutting, would be a G5X2 or a F14. The heads are a 64cc chambers.

Thanks.

stevied916

iTrader: (30)

The cam doesn't matter. It won't fit in the stock bore

405HP_Z06

iTrader: (11)

Sure it will. I have Dart 225's on my stock 3.898 bore.

Captain InsaneO

iTrader: (38)

lol! I read where people say the 2.055 valves will work on a stock displacement engine, and read where other's say it won't work. This is another reason I posted this thread.

I appreciate the replies.

Magic Man

I don't know but I was of the opion that 2.02 valves were best on stock displacment.Am I wrong on this?

massls1guy

iTrader: (9)

Good question. Seems like most performance oriented street heads tend not to go larger than 2.04" on the stock LS1 bore.

I was tempted by a set of Cartek 5x heads in the for sale section with big 2.055 valves. But the combustion chamber was also opened up for a larger bore, 4.125" I think.

A while back there was a good deal on some used TFS fast as cast heads with the 2.055" valves. That's when I noticed that TFS has 2 versions of that fast as cast head - 2.04" valve for LS1 and 2.055" for LS2 (also slightly different chamber size).

Another good data point is that the AFR 205's have a 2.02" valve.

KH504

iTrader: (3)

I have 2.055 valves with 64 cc 853 heads . Cam is a 228/234 588- 598 on a 112 but I have 60 thousand gaskets for some more room. Also a 230/242 615-615 on a 116 will fit also I know because it was in the car.

JFM-jr

iTrader: (23)

2.08 here G5X4 needed flycutting 60.4CC chambers on a 5.3 head. The problem is the valve comes close the the cylinder wall and air can have a tough time getting around that side of it. Never seemed to give me any problems LOL.

BADD SS

iTrader: (4)

Yup, shrouding... Are those on the new motor, or were they on the old one too?

JFM-jr

iTrader: (23)

They were on the LS1 motor and will be flipped onto the LS2. The bigger bore should yeild me a couple of free bonus ponies via "unshrouding".

BADD SS

iTrader: (4)

yup, it will be a sweet setup for sure.... Cant wait to see ya at atco again, hopefully I'll stay in one piece...