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11-12-2009, 10:06 PM
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#1 |
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Registered User
Join Date: Jun 2009
Location: Pasco, wa
Posts: 111
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400 small block timing help
What do you guys recomend timing wise for a small block 400. It has a mild cam,headers,roller rockers, and a edelbrock intake. Book says 4* and thats what im at right now but another member said i should bump it up for performance. ive had it at 8* before and with my headers heating up the starter i had a bad hot start problem coupled with the timing. Ive wrapped the starter and ran bigger battery cables so i may not have that problem to the same degree now.
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1972 C10 cheyenne super -350/th350 Wifes truck 1971 Nova- 6.0l with some goodies and a t56, 98-02 camaro brakes all around, tubular control arms, etc 2000 zr2 blazer- rock crawler offroad toy, one ton axles and lockers front and rear. 2006 2500hd- 500hp duramax/built allison trans,traction bars, and some other goodies. |
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11-12-2009, 11:28 PM
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#2 |
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Right on the line, baby!
Join Date: Oct 2003
Location: Phila, PA 19130
Posts: 1,486
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Re: 400 small block timing help
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83 GMC 406 th400/3.73 Eaton Truetrac posi, headers, x pipe, & racePros. Tubular control arms, lowering rear springs, caltracs. Still ugly, but getting built right, although slowly Click and scroll down for site vendors! Subscribe here! |
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11-13-2009, 12:39 AM
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#3 |
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Registered User
Join Date: Jun 2009
Location: Pasco, wa
Posts: 111
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Re: 400 small block timing help
Id rather not go into it that far yet with replacing parts in the distributor and stuff.
Just kinda looking to see what others with similar 400's are running theirs at.
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1972 C10 cheyenne super -350/th350 Wifes truck 1971 Nova- 6.0l with some goodies and a t56, 98-02 camaro brakes all around, tubular control arms, etc 2000 zr2 blazer- rock crawler offroad toy, one ton axles and lockers front and rear. 2006 2500hd- 500hp duramax/built allison trans,traction bars, and some other goodies. |
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11-13-2009, 10:36 AM
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#4 |
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Account Suspended
Join Date: Oct 2009
Location: Sammamish, WA
Posts: 2,404
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Re: 400 small block timing help
If you don't want to change weights, then you can at least set the static timing correctly by the FAQ. You won't get the best power, but it should address your hot start issue.
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11-16-2009, 07:56 PM
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#5 |
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Registered User
Join Date: May 2008
Location: elwood utah
Posts: 10
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Re: 400 small block timing help
well my 400 has nothing more than a larger carb and headers and a mechanic i work with said to bump it up to about 6 or 8 degrees (wherever it sounded like it was idling better) now this guy i would trust to do anything on any of my vehicles. but you dont know him so haha you can take my advice or leave it. just thought i would put it out there.
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69 GMC 3/4 ton, 4x4, 400 SB, work in progress |
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11-16-2009, 11:24 PM
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#6 |
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Registered User
Join Date: Jun 2009
Location: Pasco, wa
Posts: 111
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Re: 400 small block timing help
Im gonna bump it back up to 8* and see how it does starting when warm, If it has bad hot start again ill split the difference at 6*.
__________________
1972 C10 cheyenne super -350/th350 Wifes truck 1971 Nova- 6.0l with some goodies and a t56, 98-02 camaro brakes all around, tubular control arms, etc 2000 zr2 blazer- rock crawler offroad toy, one ton axles and lockers front and rear. 2006 2500hd- 500hp duramax/built allison trans,traction bars, and some other goodies. |
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