429 Crankshaft Timing
Thread Starter
|
New User
Joined: Sep 2013
Posts: 13
Likes: 0
429 Crankshaft Timing
I installed a new MSD mechanical advance distributor in my 429. The distributor comes from the factory with a 21 degree advance stop. Then, it comes with other stop bushing that will increase the degrees of advance to 23, 25,or 28. It also has different springs to vary the rate of advance. I played with the springs, to where it is running very nicely. Any advice out there on whether I should play with the other stop bushings, and how to know what my maximum advance should be, other than trial and error?
Thanks
Thanks
Lead Driver
Joined: Nov 2006
Posts: 5,217
Likes: 506
From: Pa.
This is going in large part depend on what you use the truck for and how you drive along with gear ratio, tire size, and horse power .. Generally speaking the more initial timing the better the lower end of the power band performs which one needs for what I call truck related duties (towing etc.) but this does sacrifice some top end performance .. If your not operating above 4500 rpm's you'll never notice .. For a working truck I like 34-36 total timing and all in by about 3300 rpm's .. If your going to work your truck it's better to stay safely away from detonation by making very small adjustments ..
Thread Starter
|
New User
Joined: Sep 2013
Posts: 13
Likes: 0
Thank you, redroad. That was helpful. I will ramp up slowly to avoid detonation.
4:11, C6, 33" tires. I don't know the HP. Performer RPM heads & intake manifold. Comp Cams high tork cam, SVO roller rocker arms, 750 Holly single pump.
Some heavy loads, some hot rodding around; it just depends on the day. 7500' elevation to deal with, too.
4:11, C6, 33" tires. I don't know the HP. Performer RPM heads & intake manifold. Comp Cams high tork cam, SVO roller rocker arms, 750 Holly single pump.
Some heavy loads, some hot rodding around; it just depends on the day. 7500' elevation to deal with, too.
Thread
Thread Starter
Forum
Replies
Last Post
mountain dewd
1973 - 1979 F-100 & Larger F-Series Trucks
14
Apr 16, 2016 12:25 AM
LARIAT 85
Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W)
2
Feb 23, 2014 03:29 PM
radramrod2
Big Block V8 - 385 Series (6.1/370, 7.0/429, 7.5/460)
1
Oct 27, 2004 03:09 PM
gtex
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
92
Oct 13, 2004 08:38 PM
galaxie64
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
8
May 12, 2004 09:15 AM
