JohnB
Tech Moderator
Member # 969
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Figured I'd run this by the board...been readin' about this most of the evening...
Today, I installed a set of 1.7's on a iron GT-40 set-up (stock short block 90's 5.0). The correct pushrods were utilized and all was set up correctly (proper hardware). Here's my question..
If there is excessive lifer pre-load, would it cause a slight backfire (through the tail pipes) on decelaration? I'm thinking yes, and shims *may* need to be used...
Lemme know what you think- shims, yes...or no? If yes, what would you use? .030, .060, or .090?
The mods to the car are as follows- Cobra upper and lower, stock injectors, stock cam, GT-40 Irons, 1.7 rockers, 65mm TB, 73mm MAF (I think!) and base timing at 12*. (Note: I'm going to knock the timing back to 10* tomorrow, see if this helps any ![[Smile]](smile.gif) )
[ December 15, 2002, 08:34 PM: Message edited by: JohnB ]
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1965 Shelby Cobra
1993 Cobra
2012 F150 Raptor
2020 GT500
Posts: 6523 | From: Orlando FL/Redding CA | Registered: Mar 2002
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