[Nyairguard]

spring locators?

[Jay S]

Originally Posted by Nyairguard

spring locators?

The i.d. on the springs your looking at is nearly the same as a factory spring. No need for a locator.

The picture you posted they might have an ID locator already on there.

[Nyairguard]

Ok Jay
I didn’t know what keeps the bottom of the spring from moving if it does at all I thought the originals sit in a pocket and the ones I bought would be smaller than the pocket and possibly move ?

Also comp returned my email and he came up with 942-16 springs,

[Stan Weiss]

Originally Posted by Jay S

The i.d. on the springs your looking at is nearly the same as a factory spring. No need for a locator.

The picture you posted they might have an ID locator already on there.

Originally Posted by Nyairguard

Ok Jay
I didn’t know what keeps the bottom of the spring from moving if it does at all I thought the originals sit in a pocket and the ones I bought would be smaller than the pocket and possibly move ?

Also comp returned my email and he came up with 942-16 springs,

I believe Jay answered that.

Stan

[Jay S]

The comp 924 springs would work with the retainers used on the 995s. You might need a O.D. locator. I think the compcams part number is 4704. With the cam you have if would probably work fine without one.

It looked to me like the heads have stock length valves and the spring pockets were machined deeper. Sometimes the cutter for that removes extra metal off the stem boss and a I.D. locator is used. Maybe it is an optical allusion, your head photo looks like it has a really deep spring pockets and a thick spacer at the bottom. It doesn’t appear to be a O.D. locator, it could be be an ID locator. I can’t tell. Lol Probably a huge flat shim.

What ever you pick, shoot for between 120-130 lbs on the seat pressure. For similar valve control jumping between a dual or a single, single spring add 10-15% more spring rate versus a dual, and vice versa for the dual springs superior harmonics control. I have never seen anyone post that % rate number, take it for what it is worth, trial and error.

[Nyairguard]

Hi Jay
removed one of the springs to get a look and looks to have a locator or a collar on the base tried to lift it up but couldn't valve seal maybe holding it down or some oil. the inner spring is .700 id and has good fit with little movement. the install height is 1.7
I did find those earson style spring kit and ordered them yesterday. in your opinion if that set-up measures 1.7 or very close to that with the retainer that is in the kit I shouldn't have any issues?

seen a guy use some string to hold the valve up but no luck used my air and that worked much better.. go figure

[Jay S]

That looks good. They did use an I.D locator, no reason to pull out any of the locators, that is ready to go.

The Erson springs shouldn’t need a shim, unless the retainers or keepers set on the 995s are not neutral on the installed height. Appears like they are neutral, I can’t really tell looking at the photo though.

[Nyairguard]

Hi Jay

Just got a call from lunati stating no cam blanks available and no time frame to get them national back order ,,
Thinking of the 2802 now any take on those ?

[TransAm 474]

Originally Posted by Nyairguard

Hi Jay

Just got a call from lunati stating no cam blanks available and no time frame to get them national back order ,,
Thinking of the 2802 now any take on those ?

I honestly think the Summit 2802 camshaft would be a great choice for your build, since it has 10.06-1 compression. Just be aware that it doesnt have much attitude at idle in a high compression 400, but it would work great with power brakes and make good power. Almost everyone I've talked with says the 2802 runs really hard in their high compression 400's, and are fine with pump gas. Another really good choice at your compression would be the Crower 60243, it will have a little more attitude at idle, but cost is much higher than the 2802. Summit shows to have the 2802 In Stock at the moment. They were on back-order not too long ago.

[Nyairguard]

transam474
I see your other posts here , spotts sells his version also, his ad states you can advance 2 degrees to get a bit more bottom did you do that also how much idle vacuum you seeing? spotts states the highest quality lifters in his kits not sure on the summit

[Nyairguard]

called summit told me only have the 60916 in stock any other bout 2 months out ? wonder what happened to all the camshafts

[TransAm 474]

Originally Posted by Nyairguard

called summit told me only have the 60916 in stock any other bout 2 months out ? wonder what happened to all the camshafts

The Crower 60243 is indeed on back order until late November, but the Summit 2802 it shows "In Stock"(Camshaft Only), more than 10 available it says. I would also purchase the Crower Camsaver hydraulic lifters from Summit, which are very likely the Hylift Johnson that everyone likes, modified with a very small flat down the side to allow extra oil to the lobes. Very good lifters, and shows they are In Stock as well.

Here is the link to the camshaft

https://www.summitracing.com/parts/sum-2802

Here us the link to the lifters

https://www.summitracing.com/parts/c...6/make/pontiac

[Steve C.]

http://www.bulletcams.com/


If interested, UltraDyne lobes H4 and H9 listed at Bullet are the same as the Lunati cam.
.

[TransAm 474]

Originally Posted by Nyairguard

transam474
I see your other posts here , spotts sells his version also, his ad states you can advance 2 degrees to get a bit more bottom did you do that also how much idle vacuum you seeing? spotts states the highest quality lifters in his kits not sure on the summit

When degreeing the 2802 camshaft, we used the method of Intake/Exhaust lobe lift relation at TDC, instead of using the Intake Centerline method. Camshaft guru Harold Brookshire used to say that as long as the Intake Lobe lift is .025"-.045" higher than the Exhaust Lobe lift at TDC, you will have a well running engine. So thats how we did it. It's harder to get that .025"-.045" with the wide 114° lobe seperarion, but we degreed it to where the Intake Lobe lift came out .0275" higher than the Exhaust at TDC. The Intake Centerline came in at about 106.5° at that, so yes, we have the 2802 installed at about 2.5° advanced from the 109° it states on the cam card. Plenty of people installing them at the 109° it states on the cam card with great results though. We haven't got to drive the car yet, as it is in the middle of complete restoration, but it seems to sound great. We haven't had a vacuum gauge on it yet, but the idle is pretty mild, not really much attitude at all, so I would say it has pretty good vacuum. If I can think to check it next time we have it running, I sure will.

Do you by chance have a link to that spotts camshaft?

[Nyairguard]

https://www.ebay.com/itm/Pontiac-HCP...oAAOSw2s1Uwp5F

he has lifters separate also, also look at other items has some good stuff

[Nyairguard]

haven't decreed a cam in a while,,
I have
degree wheel
checker lifters
piston stop
mag base dial indicator kit
am I missing anything ?

[TransAm 474]

Originally Posted by Nyairguard

https://www.ebay.com/itm/Pontiac-HCP...oAAOSw2s1Uwp5F

he has lifters separate also, also look at other items has some good stuff

That camshaft will be exactly the same camshaft as the 2802, just reboxed. They are all ground by CMC I believe, and sold under various brands. I see in the listing it says it comes with Eaton lifters, if that is the case, I would go with the Summit 2802 along with either Hylift-Johnson(Topline) lifters, or go with the Crower camsaver lifters I posted above, which are likely Hylift-Johnson anyway. Last I knew, the Eaton lifters were being made in Mexico. Both Hylift-Johnson and Crower are a USA made lifter, and the highest quality out there.

[Nyairguard]

states made in USA look just like the comp set i bought a while back

https://www.jegs.com/i/JEGS/555/20702/10002/-1

[TransAm 474]

Originally Posted by Nyairguard

haven't decreed a cam in a while,,
I have
degree wheel
checker lifters
piston stop
mag base dial indicator kit
am I missing anything ?

I believe you have everything covered to do your degreeing, just make you a pointer for your degree wheel. I usually make one out of a metal clothes hanger.

[TransAm 474]

Originally Posted by Nyairguard

states made in USA look just like the comp set i bought a while back

https://www.jegs.com/i/JEGS/555/20702/10002/-1

Gotcha, I didn't know you were looking at the Jegs lifters, I thought you were talking about the lifters that come with that Spotts cam. I believe that I remember people here saying that the Jegs lifters are Delphi, which I think are still USA Made.