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Old 10-11-2018, 01:54 PM   #7
BigDooley77
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Join Date: Sep 2016
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Unhappy Re: 1977 GMC CCDW build

I decided to go with electric fans so I pulled some from a 98-02 F-body ( v6 and v8 use the same fans in these years btw) some mock up before I used aluminum to make a bracket. riveted the fans to the bracket and made the bracket fit the factory fan shroud area.

got the engine back in wired the fans up with a generic Jegs kit plenty of room too I got o fire the truck up but its not right I really messed up ugh what could I have done... I fumbled around trying to diagnose the issue before finally deciding the timing is way off sadly I had placed the variable timing gear on the crankshaft wrong I was off 3 teeth I could explain this all day and some guys will just say dude its so simple yadda yadda don't wanna hear it lol fixed the issue new valves, new pushrods, and for safety new lifters. fired up timed the engine its purring like a kitten I had quite a bit done to the engine nothing crazy but I wanted as much torque as possible from the 454 and I wanted it cheap!. k1301 cam summit dual plane worked 781s.
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1977 GMC Sierra Classic CCDW. 454 worked 781s, 277/287, Lift .502/.501 LS 114, Dual plane intake, Dana 70 (4.10) and 4L80e (HD2 kit).

http://67-72chevytrucks.com/vboard/s...63#post8361863

Last edited by BigDooley77; 10-11-2018 at 03:38 PM.
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