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#37
10-28-2025, 07:36 AM
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Antigravity
Just a side note. I replaced the 45 lb conventional battery with an antigravity ATX-30-HD in my ‘64 GTO race car. I run a 75 amp Denso alternator. Motor is a 12.5:1 compression, 4.5 inch stroke 488 and cranking compression is 210 psi. Powermaster starter. I have a 16” electric fan, A1000 fuel pump, trans cooler with electric fan and an MSD 6A ignition. Bottom line, it spins the motor like turbo! I can’t believe that little battery that weighs nothing can store enough energy to perform like that. No between rounds battery charging and after unloading at home I hooked up the charger and it topped off in no time!
PS I set a PB of 9.25 at 142.5 mph in my single 4bbl foot break GTO.
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1964 GTO, 488 cubes , 340 cfm E heads by butler 268/276 on 110 solid roller. .440 lobes 1.65 hs rockers. 12.5:1 . Single 4150/1050 cfm carb by ATM. Back half ,ladder bar, foot brake. 8” ati , home made th400 with 2.75 low gear set and 4.10:1 rear. Stock block splayed billet, Eagle forged rotating assembly. 3050 lbs with driver. 9.25/142.5 100 pct home made. Bucket list dream checked off! |
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