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Old 04-12-2011, 03:29 PM
whale whale is offline
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Join Date: Apr 2011
Location: chattanooga, tn
Cobra Make, Engine:
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Thanks for the help. Engine is a 60 over with a stock stroke, cr is 11.8:1, Comp cam, solid roller;D264/268, L 673/653,LS 108. Cam was not picked for Webers. We changed our minds later so the cam is not the best for the job. It is set on a 106 CL. Timming is set at 36 Total coming in fast....cant remember exact number, but I will look and check. Carbs are 48 IDAs, we have reduced the venturis from 37 to not sure. Somewhere around 28, we also changed the auxiliary venturi. In other words we cut off the tube on the top. We put in 300 needle and seats. Carbs are set with F10 holders and 60 IJ, F4 E Tubes, 180 AC, 210 MJ. Tunnel ram is a stock Nascar Bathtub for a single 4 barrel. We made a plate and machined it for 4 Webers. This was very common back in the late 60s and early 70s in Boat Racing. We had a hard time in the begining getting enough fuel at WOT. but was very rich at cruise. I am using a Fast Wide Band to tune.....we made a plate to go down the middle, but latter added a box to isolate the middle and only leave the outer sections under the carbs . This is very hard to explane in words if you have never seen this intake. I test drove the car yesterday and at 2000rpm A/F is 9.8, at idle it is 11.8 to 12.5, WOT is in the 10s. I changed the ET to F4s, at idle it is 13.8 to 14 with the mixture set at 3/4 out. Was not able to test drive , hope to tomorro. Thanks, wayne

Last edited by whale; 04-12-2011 at 03:32 PM..
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