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73-87 Chevy _ GMC Trucks => Performance => Topic started by: micahadams on April 28, 2010, 09:28:44 pm

Title: 454 timing
Post by: micahadams on April 28, 2010, 09:28:44 pm

Does anyone else have a hard time starting(starter turning slow) w/ 15 degrees initial timing?

Title: Re: 454 timing
Post by: Josh454 on April 29, 2010, 05:24:04 pm

Wouldn't think so but then again what is your compression?  Are you running headers?

Title: Re: 454 timing
Post by: micahadams on April 29, 2010, 11:32:10 pm

C/R is 8.5 and yea i have some thorley tri y's

Im going to put in a 2nd battery and see if that helps(came factory w/ 2 batteries)

Title: Re: 454 timing
Post by: beastie_3 on April 30, 2010, 12:40:02 am

take your batteries and starter in and get them tested for free before you start dumping money

Title: Re: 454 timing
Post by: joesgarage71 on April 30, 2010, 02:04:28 am

does it crank any faster if you move it to 4*?? If not
Make sure all the conections are clean, the battery is charged, grounds are good. if it still cranks slow I'd say the starter is junk. bushing worn out, armature is rubbing on the Field windings.

Title: Re: 454 timing
Post by: micahadams on April 30, 2010, 07:30:44 pm

Yea it cranks much better with less timing.

Title: Re: 454 timing
Post by: joesgarage71 on May 01, 2010, 05:48:13 am

 something ain't right it shouldn't need that much timimg. timing chain worn, weights in the dist. rusty?

Balancer could be slipping on the rubber band.

Title: Re: 454 timing
Post by: micahadams on May 01, 2010, 01:29:14 pm

The HEI will only centrifical advance 20 degrees. So to get 35 total I need 15 initial. Motor is brand new w/ a brand new SFI balander

Adding the 2nd battery helped big time. It will crank much better now

Title: Re: 454 timing
Post by: malibu795 on May 01, 2010, 08:32:32 pm

what are your battery cables like?
good grounds? perosnally i run a dedicated ground form the engine block to battery
a stock OEM starter should roll a 8:1 engine over no problem

Title: Re: 454 timing
Post by: bgctrading on May 03, 2010, 05:55:34 pm

I never use anything but a good gear reduction starter anymore.

Title: Re: 454 timing
Post by: drag80 on May 03, 2010, 11:24:41 pm

i'm using a smaller GM gear reduction starter, and it turns over my 10.5 to 1 compression 468 with ease, and i even have the distributor locked out, so it starts at 36 degrees timing.