Hi. This is the noise that I currently have.
Hot or cold sometimes its loud sometimes it quiets down. https://www.youtube.com/watch?v=TfrS...e_gdata_player

I had my pan taken off and my pickup welded on due to it falling off. I had them check everything under there and the noise isn't anything from in the pan at least.
I will be changing lifters pr and rr due to it not being rods or bearings.

Will this combination be good?

COMP Cams 850-16 - COMP Cams High Energy Hydraulic Roller Lifters

COMP Cams RP1418-16 - COMP Cams Magnum Rocker Arm Kits

Will those be great together?

This is what's currently in it right now.
The blue proform 1.6 rr and sealed power Rp3262
Its a rebuilt cammed 383 lt1 94.

Could someone point me to some.pn if those aren't great. Looking for rr pr and lifters.

 

No, no, no, and no.

The 850s are NOT an upgrade from stock. Use the new LT1 replacements (LS7s) ONLY if your current lifters are not reusable. Many people blindly replace the lifters because they believe the aftermarket is much better when more often than not it simply isn't.

The Magnums won't be worth any horsepower by themselves as the tips are not where the majority of the friction is produced - it's in the rocker body trunion bearing. Also if you go with a full roller rocker they'll likely be the last rocker you'll buy. Buy once, buy right, even if you have to save up a bit longer. It'll be worth it in the long run.

It is easy to prove/disprove that those Sealed Power pushrods may or may not work, but it is even easier to prove that something like the Trick Flows (very common to use with LT1s) WILL work. Some might argue that pushrods are pushrods, but why take a chance? Also, those PRs AREN'T hardened, making them a big no-no when used in a NSA applications (which you SHOULD have already).

You mention "Proform 1.6" but prior to that you suggest the Magnums, so which one is it? If I had to pick I'd do the Magnums over the Proforms anyday (since the Proforms are about the cheapest Chinese rockers you can get - buy at your own risk) but like I said earlier get the best rockers you can afford. Something like the Comp Ultra Pro Mags in 1.6/ 7/16" stud with the proper hardware (hardened chromoly pushrods, hardened guideplates, bigger studs).

 

I do not know what my engine builder used as far as lifters so that's why I'm asking. My op has been updated reflecting my fast post on break at.work. could you help me with a.kit for the 3 things. I don't believe I have guide plates either. Thanks.

What about the scorpions scp1036bl

Video with the valve cover off.
https://www.youtube.com/watch?v=ZIis...e_gdata_player

 

Scorpion had some problems 4 or 5 years back with there trunion's coming apart but i think by now they should have fixed them... lots of people run them in sbc/bbc/ford applications and lots of lt1's run them

 

This is some more engine spec.
1.96"x1.55" valves and 100# springs.

*The "EAGLE"**cast steel*3.75" stroke crank and ProComp 5.7" I-beam rods.**SpeedPro (10.4to1) compression pistons.
*The camshaft (220/224` duration*at .050" with .505" lift on 112`LSA)

I want to do this this weekend. What about these 3.

Chevrolet Performance 12499225 - Chevrolet Performance Hydraulic Roller Lifter

Scorpion Performance SCP1036BL - Scorpion Narrow Body Self-Aligning Rocker Arms



Trick Flow Specialties TFS-21407200-1 - Trick Flow%u00AE Chromoly Pushrods

 

I would get the comp cams ultra pro magnums. I just swapped mine last week from proforms. Night and day in the quality between them. I just really used my pushrods as nothing was bent or worn. Your motor sounds like may have been built by the same guy who did mine (Herb).


Posted from Camaroz28.com App for Android

 

Maybe you didn't read the first post? Go with the Ultra Pro Mags and LS7s.

You picked the absolute worst crankshaft. Eagle cast cranks are horrible. You see more broken cranks than good cranks.

Same with the pistons. 10.4:1 is a step back from stock (most likely -16cc pistons, a generic SBC piston).

The cam choice is awful too especially for a 383. Much too small on the duration.

I know you didn't ask for suggestions on the rest of your combo but you should consider it while you're in "fix" mode.

 

My engine was built by herb, correct.

The ls7 is the 12499225 if I'm correct that's why I chose those now.

I do not see the ultra pro mags listed at summit do you have a pn?

What about those two and the trick flow pr I listed? That's ls7 lifter the mag rr and the pr? Reason for summit is it's right in town so it's easy to get.

Thanks everyone for posting so far and helping I want to do this this weekend so I get this nasty noise out of my engine I hope

 

1618-16 was part #(might confirm it) I believe its for models 1988 up with 3/8 studs.......... I am not a big fan of herb lol. Luckily I changed enough of his standard build that I do have some better parts but even at that I had at least six head studs seaping water with no pressure in coolant system because he used teflon tape. His suggestion was using bars leak. I pulled motor and sealed it with what arp specs as sealant for their headstuds( they also felt undertorqued upon removal as well as didnt use arp specec assembly lube. Lets just say if your unhappy he may ignore you and not return calls or emails and he doesnt provide the parts he uses upon question. I am not happy with oil pressure either but changing the pump helped bigtime also quieted it down as did going to 15-40 schaefer synthetic oil. The other thing that ticked me off was he tells you to leave the windage tray out of the stock oil pan. After reading how poor of a choice that is that helped me to pull motor back out and fix studs and put an aftermarket pan on. I got an 8qt champ pan for 180 bucks and am very pleased with it so far( I run it with 7qt because was getting cavitation). Good luck- I hope you get it solved.


Posted from Camaroz28.com App for Android

 

Will those work on my lt1 94 since it says gen1? Also is that the stock stud size? If these are correct I'll order those, the 7.2 push rods and the lifters mentioned in my last post. Hopefully everything will just bolt up snug... my oil pressure as seen in my first post is perfect... that's same hot and cold 530

 

Yep thats what I just put on mine. I am sure you have the 3/8 studs also especially since I havent seen the proforms in a 7/16 and the 7/16 is an upgrade. I dont know about the other parts but I know comp cams offers pushrods also and in a stock length and a shorter length for shaved applications. Ram air is WAY more knowledgeable than me about all that and he has helped me quite a bit in my selections of "repairs" lol. Are you running the stock oil pan and did you leave the windage tray out?


Posted from Camaroz28.com App for Android

 

I think they list as gen 1 because you have to alter the valve covers on an lt to clearance them(some simple snipping)


Posted from Camaroz28.com App for Android

 

No tray and stock pan yes.
The push rods that I have, mentioned in first post aren't stock length... I should still go with 7.2?

 

In order for the valvetrain geometry to function as intended every component needs to be matched, including the pushrods. You NEED to measure for proper length using a PR length checking tool.

 

Understood. I will be ordering the ultra rr and the ls7 lifters then along with the push rod length checker and a sharpy LOL