2001 GT 4.6 V8 weak crank no start.

[The-Bamboo-Farmer]

Hello! I've tried all i can to make this car work but to no avail. I got it as a shell, with the motor and transmission on the side. I replaced the headgaskets (chief issue) and verified the condition of all other parts associated with the the two which turned out to be good. Stuck em both in, reconnected the harness and did some testing, finally went to start it and no dice. Im getting a very weak crank and no start, so i check all of my fuel, spark, and air systems with no luck in finding a problem. my anti theft is blinking when i start, so that is my lead diagnoses, but im wondering if my battery is strong enough in the first place. i have a 590 CCA with a 95 reserve, and im getting 12V throught the major electrical components required to start. Anyone care to weigh in some ideas? Im getting a key fob this weekend to try and shut the anti theft up, but its the weak crank thats drawing my attention now.

Thanks in advance

TheBambooFarmer

 

[gkomo]

Bad Grounds?

 

[The-Bamboo-Farmer]

Bad Grounds?

Grounds are looking fine, got a new battery and key fob, anti theft disabled when starting. Gonna retest all my electrical components required to start tomorrow. New battery is a 630 CCA with 100 Reserve