timing question

Drakeborg · Jun 4, 2007

So I recently got my 5.0 rebuilt, and I was wondering anyone could tell me what my timing should be set at? Something seems to be off when driving around, it doesnt seem to idle right. The RPMs are about 750-800. The new cam has a .498 lift, I dont have any more info on the cam itself in order to determine what my timing should be, or if I should just leave it at 10. Please let me know what would be best.

drakesdad · Jun 4, 2007

Drakeborg said:
So I recently got my 5.0 rebuilt, and I was wondering anyone could tell me what my timing should be set at? Something seems to be off when driving around, it doesnt seem to idle right. The RPMs are about 750-800. The new cam has a .498 lift, I dont have any more info on the cam itself in order to determine what my timing should be, or if I should just leave it at 10. Please let me know what would be best.

can you give a complete list of what's in the car.....some of the pro's will need it...and welcome to the site.....

Drakeborg · Jun 4, 2007

I know this is going to sound bad, but here is the deal. I do most work on my car, and have for the last year or so, but I dont know much about what I am doing. What I did is asked a buddy of mine to help me out with it. He ordered the parts that were put on it from the machine shop. I would have to call the machine shop to get all the specs on what was done to my car, but if I did that they could probably tell me what the timing should be set at. I was just curious if anyone could help with what I did know because I dont recall where my receipt for the machine shop is at.

drakesdad · Jun 4, 2007

I totally understand the first part....it's a good way to learn.....you turn the wrench while you have a "teacher'....I still do that.....

did the engine get the old .030 over.....with the stock heads......

have you any pics of the engine now....

Drakeborg · Jun 4, 2007

Yeah I did the whole .030 over bit with the stock heads. I unfortunately dont have any pics. I dont have a camera.

Drakeborg · Jun 4, 2007

A quick note, I think I should set the timing at 12. I dont know If that is really enough to make much of a difference but it is only a thought.

badstang123 · Jun 5, 2007

It's really tough with such little information. I am not an expert but I would try giving it a bit more. If you get any pinging then just back it off a little.
- Justin

final5-0 · Jun 5, 2007

You will pick up power as you bump it up

Try values in 2 degree steps

You may also encounter the ping thing

You can usually go a bit higher if you go a bit higher on the octane

You just gotta play with it and see what your combo likes
and
Decide if a bit more power is worth the additional higher gas price

Grady

True 5.0 · Jun 5, 2007

Drakeborg said:
So I recently got my 5.0 rebuilt, and I was wondering anyone could tell me what my timing should be set at? Something seems to be off when driving around, it doesnt seem to idle right. The RPMs are about 750-800. The new cam has a .498 lift, I dont have any more info on the cam itself in order to determine what my timing should be, or if I should just leave it at 10. Please let me know what would be best.

The timing will have little to do with the idle quality. If you're running a cam with overlap, you'll have issues with idle quality. Give us more info on the cam.
You can get away with as much as 16* BTD using 93 or 94 octane gas. Advancing the timing will give you a much more responsive bottom end.

Drakeborg · Jun 7, 2007

cam info

Ok guys here is a link to the cam that I am almost positive is in my car:
http://store.summitracing.com/partdetail.asp?part=FMS-M-6250-E303&autoview=sku

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