Elliott's94Z

iTrader: (12)

Will the LS7 lifters fit on our LT based engines??

daves94formula

iTrader: (3)

Im pretty sure they are the only LS based lifters that will work in a LT block

KriegerEhre

iTrader: (3)

yes sir. . . .i do belive so sir. . .

Elliott's94Z

iTrader: (12)

k..anyone know the stock GM double roller timing chain number and a good vented Opti spark to go with? I want to upgrade to the better Opti and timing chain during my cam install.

Purple95Z28

iTrader: (6)

The stock GM timing chain is not a double roller. Only options for "upgrades" really are a double roller SBC chain if you use an electric waterpump (you have to clearance the inside of the timing cover if you do this though), or the LT4 "Extreme Duty" set. Most cars will do fine with just a new stock replacement though.

Also, for Optis, either go with a new AC Delco one (or Delphi from "thepartsladi" on ebay), or get an MSD.

Elliott's94Z

iTrader: (12)

I know the stock one is a single, I want to upgrade to the double roller. I was told you have to do this and the opti if you change the cam out...true or false??

Pro_built7

iTrader: (9)

you do not 'have' to do that if you change the cam out, maybe get a new timing chain.. if you feel the need.

Elliott's94Z

iTrader: (12)

thats good news because i have a new chain! Plus I will be saving a lot of money..coo coo

Fixxer99TA

iTrader: (5)

Yes, and another +1 for that either AC Delco or MSD Optispark.

StealthFormula

iTrader: (35)

The LS7 lifters are a direct replacement lifter for LT1's. They are the only thing that all LS based motors and LT can share. If you go to the dealer to order LT1 lifters the LS7's are what you will get because they are just the same thing but revised to better handle the high rpm's of the LS7 motor.

Elliott's94Z

iTrader: (12)

Huh...called Lingenfilter Performance and Atlantic Speed earlier today and they both said the LS7 lifters will NOT fit the LT1's. Sure would be nice if they indeed do cause they are pretty inexpensive compared to others.

robsquikz28

iTrader: (246)

i have ls7 in my lt1 car and my brother has them and a few other people i know do so yes they will fit and +1 to stealthformula

Elliott's94Z

iTrader: (12)

Sweet! Good to hear. Sometimes I wonder about these part shops and their knowledge on performance products...9 times out 10 they know about as much as my 6 year old daughter..which is pretty much nothing

StealthFormula

iTrader: (35)

I hear ya just call Comp Cams and you will become stupider after hearing what they have to say. May grab some LS7's myself because my lifters may be no good but anyways no worries they will work for ya!

Elliott's94Z

iTrader: (12)

Thanks bro! And I hear you on comp cams customer service..they are horrible there

StealthFormula

iTrader: (35)

They called me a "tree hugger" because I wanted a cam that would pass emissions way back when I had my '95. Also they recommended a flat tappet camshaft to someone once for their LT1 when we have hydraulic roller camshafts lolol smart guys.

BizZzatch350

iTrader: (33)

They told me the reason why Comp Rs were failing was because they were meant to be pulled every few passes and checked.

Elliott's94Z

iTrader: (12)

Yeah, I've been meaning to talk to you about this whole "Go green thing man" lol

StealthFormula

iTrader: (35)

lmao now that is practical!!!! You would need a dump truck full of RTV to last you just a year lolol.

StealthFormula

iTrader: (35)

dont be going all tree hugger on me now lololol. I think my 107lsa cam explains my position on emissions

sry its been over 3 years and still no clue how to double quote lol