HEI Timing - The 1947 - Present Chevrolet & GMC Truck Message Board Network

skokie · 07-11-2005, 12:11 AM

For you folks with a hei on your smallblocks. What do you have you idle timing set to?

Thanks

tomatocity · 07-11-2005, 12:15 AM

Quote:

Originally Posted by skokie

For you folks with a hei on your smallblocks. What do you have you idle timing set to?

Thanks

What are you running in your SBC: cam, carb, intake, heads, etc

**kwmech** · 07-11-2005, 01:05 AM

I've got mine set at 6, 400 small block, 5.7 rods, crane 268 cam

skokie · 07-11-2005, 01:34 AM

Quote:

Originally Posted by tomatocity

What are you running in your SBC: cam, carb, intake, heads, etc

Crate 350 260 hp. Stock. Carb is a qjet. Intake is a edelbrock 2101.

JimKshortstep4x4 · 07-11-2005, 05:38 AM

Settings would be the same for points distributors or HEI distributors for initial timing. We set our small blocks at 10-12 degrees BTDC with the engine idling and the vacuum advance disconnected.

Jim

GMC AMI · 07-11-2005, 06:05 AM

8 degrees BTDC is a good starting point. From there you can bump it up as long as there is no spark knocking and it does not hold back on the starter when trying to start.

07-11-2005, 12:11 AM	#1
skokie Registered User Join Date: Oct 2003 Location: San Jose Ca. Posts: 3,354	HEI Timing For you folks with a hei on your smallblocks. What do you have you idle timing set to? Thanks __________________ RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234

07-11-2005, 06:05 AM	#6
GMC AMI Registered User Join Date: Apr 2004 Location: The Other Maine! Posts: 2,236	8 degrees BTDC is a good starting point. From there you can bump it up as long as there is no spark knocking and it does not hold back on the starter when trying to start. __________________ 1968 Chevy 4x4 307 4 speed

07-11-2005, 01:05 AM	#3
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,650	I've got mine set at 6, 400 small block, 5.7 rods, crane 268 cam

07-11-2005, 05:38 AM	#5
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	Settings would be the same for points distributors or HEI distributors for initial timing. We set our small blocks at 10-12 degrees BTDC with the engine idling and the vacuum advance disconnected. Jim



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