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Topic Review (Newest First)
11-15-2012 08:43 AM
fastnloud
Quote:
Originally Posted by cobalt327 View Post
A 350 sbc using 246 duration @ 0.050" lift on a 108 LSA? Naw, smooth as glass. If you threw the glass off a water tower.
haha, good so it should sound pretty nasty then. Thanks I was a bit concerned when the lunati site said "fair idle" but i guess it depends on what you call "fair" and what motor it's going in.
11-15-2012 08:38 AM
cobalt327 A 350 sbc using 246 duration @ 0.050" lift on a 108 LSA? Naw, smooth as glass. If you threw the glass off a water tower.
11-14-2012 10:24 PM
fastnloud Bumping this up, I bought this Lunati 300 cam for my truck
Lunati Bracket Master II Cam and Lifter Kits 10120412LK - SummitRacing.com

According to the summit guys it goes well with everything else on my truck, but I'm wondering based on the specs should it have a fairly nasty,choppy idle? It has 108 LSA.
11-10-2012 04:09 AM
cobalt327 Can solids make more power? Sure can. But that's not the question.

To exclude an engine from being "built" only because it has hydraulic lifters excludes SBC engines in the 600 HP range. BBC engines can make even more power using hydraulic lifters. Speaking for myself here, a 600-plus HP engine- to me- IS built, period.
11-09-2012 11:12 PM
idontdrivericeieatit But yea main reason I dont put built and hydraulic together is when people I know say built engine they are talking some crazy lift high horsepower high rpm engine and a hydraulic is not going do that because of vavle float with the lifters and limted lift. you will see solid roller or hydraulic roller in most built race engines I run a 645 lift solid roller with 1.6 rockers to put my lift bout 680 now. but like say they are alot nice engines out there with hydraulic for street see no problem. at track thats another thing but I run mine on both street and track but I would not recommend that for most people alot of people are not going like it and yes its not cheap I have little over 12000 in motor and know a few with more money than that
11-09-2012 09:03 PM
cobalt327
Quote:
Originally Posted by idontdrivericeieatit View Post
Run what you can better than a 4 cylinder Honda any day in my book...
11-09-2012 08:54 PM
idontdrivericeieatit Now dont get me wrong you can build a nice little motor with hydraulic cams I dont use them personally but go for what you can just with a built engine im was thinking solid lift solid roller but no that not for every body just lifters and cam ran little over 700 for me. I have no problem. Run what you can better than a 4 cylinder Honda any day in my book but like cobalt saying alot of failures some from the cam some from people not doing proper break in
11-09-2012 07:54 PM
cobalt327
Quote:
Originally Posted by fastnloud View Post
Does anyone know what years the dipstick was on the passenger side?

And, I forgot to mention my motor is carbureted not fuel injection.
Passenger side- 1981 up.
11-09-2012 07:38 PM
fastnloud Does anyone know what years the dipstick was on the passenger side?

And, I forgot to mention my motor is carbureted not fuel injection.
11-09-2012 07:20 PM
fastnloud
Quote:
Originally Posted by cobalt327 View Post
And there are a whole bunch of guys who will readily agree w/you.

Attention to detail used to be enough. But now a big problem w/flat tappet cams is the influx of poor quality cam cores and lifters that make them more failure prone than they should be. Add to that the motor oil being made w/less high pressure additives that are needed when using a flat tappet cam, and the chance of improper break in procedures being followed and you have a system that fails more than it should- and more than it did, not that many years ago.

But that said, if the proper parts are used (like the correct valve springs set up w/the correct installed height), and the important areas of the valve train are checked, and the proper procedures for cam break in are followed, there's no reason a strong running engine cannot have a flat tappet cam- even a hydraulic flat tappet cam.
Agreed.
Yeah, I will be using Valvoline VR-1 as my motor oil as it has plenty of Zinc/ZDPP, and a break in additive the first time as well.
11-09-2012 06:23 PM
cobalt327
Quote:
Originally Posted by fastnloud View Post
Bare with me as I'm not a motor expert of any kind I just love hot rods, but why would you not put built and hydraulic flat tappet in the same sentence?

I do understand roller cams are better and also more expensive, but I think there are plenty of nice street rods with hydraulic flat tappets.
And there are a whole bunch of guys who will readily agree w/you.

Attention to detail used to be enough. But now a big problem w/flat tappet cams is the influx of poor quality cam cores and lifters that make them more failure prone than they should be. Add to that the motor oil being made w/less high pressure additives that are needed when using a flat tappet cam, and the chance of improper break in procedures being followed and you have a system that fails more than it should- and more than it did, not that many years ago.

But that said, if the proper parts are used (like the correct valve springs set up w/the correct installed height), and the important areas of the valve train are checked, and the proper procedures for cam break in are followed, there's no reason a strong running engine cannot have a flat tappet cam- even a hydraulic flat tappet cam.
11-09-2012 05:32 PM
fastnloud
Quote:
Originally Posted by idontdrivericeieatit View Post
Built and hydraulic flat tappet cam is not two words I put in same sentence but your answer to question is no the old two peice rear seal engines and the newer one peice rear seals engine require a different timing chain un less they have a universal type I dont know if they do and dip stick can help you determine engine age a little is it passenger or driver side dipstick older blocks are driver side
Bare with me as I'm not a motor expert of any kind I just love hot rods, but why would you not put built and hydraulic flat tappet in the same sentence?

I do understand roller cams are better and also more expensive, but I think there are plenty of nice street rods with hydraulic flat tappets.
11-09-2012 05:29 PM
fastnloud Thanks guys. The dipstick is on the passenger side of the block.
11-08-2012 11:17 PM
idontdrivericeieatit Yea I dont think he has a roller block but thats good info for me I always heard you couldnt run old style in the roller style blocks starting in 1987 but I guess to thats my fault never thought to ask if I change cam to non roller cam would it be possible
11-08-2012 11:11 PM
cobalt327 As long as he's not using the factory block/hydraulic roller cam/thrust plate he's fine, yes. That could be an engine from around '87 until the Vortec started. The factory used hydro rollers and flat tappets at the same time. Trucks/TBI engines got the flat tappet cams.
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