How much CCA need a C5 to start (battery)

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Dec 13, 2014 | 06:26 PM

corvettefrance

Thread Starter

Racer

Joined: Oct 2003

Posts: 389

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From: Denver co

How much CCA need a C5 to start (battery)

I want the battery to be as light as possible
This is just for a track car so I am not asking it to start when temperature is below 60. The car has no more radio, light etc...
I don t need to be on a safe side just to start the engine.

thanks

Dec 13, 2014 | 08:56 PM

PhysicsDude55

Drifting

Joined: Mar 2011

Posts: 1,412

Likes: 15

From: Richardson TX

This guy used a large lithium motorcycle battery rated at 540 CCA. You could probably get away with closer to 400 IMO.

https://www.corvetteforum.com/forums...2-battery.html

Dec 13, 2014 | 09:12 PM

martysauto

Drifting

Joined: Sep 2009

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From: cinnaminson n.j.

St. Jude Donor '14

There was just a thread on this. I think it was nukec5. He went with an 11 lb. Braille racing battery from summit racing. Check it out.

Dec 13, 2014 | 09:24 PM

ssrallyred

Burning Brakes

Joined: Jun 2012

Posts: 803

Likes: 42

From: Destin Florida

Quote:

Originally Posted by martysauto

There was just a thread on this. I think it was nukec5. He went with an 11 lb. Braille racing battery from summit racing. Check it out.

Ordered mine yesterday. I currently have a Optima Redtop at 41lbs. The Braille is 11.50. I live in Fl where the cold is 30 max so I will risk it all Alex for a 26.50 lb weight reduction off the FRONT of the car. Will post up results over time.

Dec 14, 2014 | 11:30 AM

corvettefrance

Thread Starter

Racer

Joined: Oct 2003

Posts: 389

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From: Denver co

Thanks guys the 400 CCA is a good number to start with
I look at shorai and found the LFX27L3BS12 at 405A
In fact this battery is for a polaris and We have RZR
As soon as the car is ready I will try the RZR battery and see what it does
If this works this will be a huge weight saving as this lithium battery only weight 3.85lbs

Dec 15, 2014 | 02:55 PM

69427

Tech Contributor

Joined: Jun 2004

Posts: 20,944

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From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.

Quote:

Originally Posted by corvettefrance

FWIW, I've been running a 300 CCA (365 CA) battery (17#) for several years in my antique 427 (with a C4 PMGR starter). Forty degrees F is the lowest I've tried to start it, and it didn't complain too much.

The lithium battery caught my attention. I keep hearing mixed reviews about running those when they will be charged by an alternator that is "calibrated" to charge lead/acid batteries. Keep us updated on how well the OEM alternator keeps the lithium battery charged.