recieved LS7 Heads/Manifold
Originally Posted by Greg Fell
I'm thinking of going TI intake and stainless exhaust.
Rockers are non adjustable.
Rockers are non adjustable.
i'm not sure how much lift i'll be able to run, as my pistons are 15* flycut.
if i ran a solid roller...i'd have to get rockers that are big bucks too. probably wouldn't save anything over the TI/hyd setup.
if i ran a solid roller...i'd have to get rockers that are big bucks too. probably wouldn't save anything over the TI/hyd setup.
You will probably be ok with the lift as peak lift only happens during the time the pistons is at it's farthest or closest to the bottom of the bore. You'd have to keep a close eye on p/v only in the sense that the ramps are much more agressive on the solid (depending on the lobe you choose) and this is where you may run into problems. I would guess that with a 244ish/248ish cam you won't have any contact issues though.
As far as the rockers though I didn't even think about that. You could get a set of T&D's for 800 though. Springs and everything else isn't going to be a huge difference between solid and hydraulic though, unless you've already purchased all the parts.
Then again I keep forgetting that you will only be purchasing the titanium intake valve so it's not like you are going to spend $1600 or anything for those valves so in the long run it may be cheaper for the titanium intake valve.
As far as the rockers though I didn't even think about that. You could get a set of T&D's for 800 though. Springs and everything else isn't going to be a huge difference between solid and hydraulic though, unless you've already purchased all the parts.
Then again I keep forgetting that you will only be purchasing the titanium intake valve so it's not like you are going to spend $1600 or anything for those valves so in the long run it may be cheaper for the titanium intake valve.
Have you figured out what valves, springs, and retainers you are going to use? If the valves are the same stem diameter you might be able to get away with using LS1 Ti retainers and some Patriot springs. The springs might need to be shimmed depending on the stem height above the head. Also, what about valve covers?
Originally Posted by Greg Fell
I thin I'm going to go with TI valves. Craig at ET is providing me a 'kit'.
Not sure about the valve covers, I wondered if they'd have enough height.
Not sure about the valve covers, I wondered if they'd have enough height.
Good info, thanks Greg!
The kit is pricey indeed. PM me and I can discuss that with you.
Craig also had stainless valves...or should I say, could get stainless valves. They were cheaper, but they are a huge/long valve. I personally feel that with a hydraulic roller..there will be issues with float/spring pressure etc.
Craig also had stainless valves...or should I say, could get stainless valves. They were cheaper, but they are a huge/long valve. I personally feel that with a hydraulic roller..there will be issues with float/spring pressure etc.
Teching In
Joined: May 2005
Posts: 43
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Originally Posted by DAPSUPRSLO
You will probably be ok with the lift as peak lift only happens during the time the pistons is at it's farthest or closest to the bottom of the bore.
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Going to a 11 degree head should provide you with more clearence. ET put a .750" lift solid roller in and checked clearence with their 265"s. It fit fine, and that's a huge cam.
Originally Posted by superls1
I am trying to educate myself. I have wondered if there would be P/V issues with these heads. However, I thought the piston and valve were actually closer according to something like the attached picture. Of course, the cam specs will vary, but in general is this picture correct? How much does the valve angle differnce impact a setup like this (I guess that is just one of the questions).