'64 Parisienne CS "barn find" - last on the road in '86 ... Owner Protection Plan booklet, original paint, original near-mint aqua interior, original aqua GM floor mats, original 283, factory posi, and original rust.
all depends what spring pressure you have, big blocks including 09s have a heavy valvetrain compared to small blocks, spring pressures are higher flat tappet will live a shorter life, i still run 10 30 synthetics with a heavy dose of zinc addative, next cams im going to rollers.
10W30 Synthetic plus one can of EOS from AC Delco...thats in the 454/ 510HP in my 88 Jimmy...was same in Beaumont until it went "knock, knock"...building a 496 stroker now, roller cam. That will probabily be 10W30 Synthetic...or whatever my builder says!!
Had the cam wipe out thing a few years back, went roller but use Brad Penn racing oil,good zinc content for insurance. There are other good oils but research is key,look at the actual (PPM) zinc numbers.
There was a post on here a while back that had the numbers from all the manufactures which may help in the decision.
If in doubt ask a performance engine builder or racer,those guys have the latest insight and info.
I have been doing alot of thinking lol on the oil I should use while breaking in my cam and motor,,read many of the ways you all here have done it ect..What is wrong with useing a good synthetic and a bottle of zinc additive ? my way of thinking is less wear and friction yet added zinc..am I thinking right ? or out to lunch..missing something? Thanks guys
I have been doing alot of thinking lol on the oil I should use while breaking in my cam and motor,,read many of the ways you all here have done it ect..What is wrong with useing a good synthetic and a bottle of zinc additive ? my way of thinking is less wear and friction yet added zinc..am I thinking right ? or out to lunch..missing something? Thanks guys
Syn oil is no way to break in your cam.............. IT WOULD BE DEADLY. Use Joe Gibb break in oil or other "Break in oils". I used Joe Gibb when i breaked in my solid lifter cam and lifters in my 57 Pontiac 261 six. The break in is very very very very very very critical or your cam will prematurely fail and the loss of lots and lots of bucks. Follow the procedure of what rpm to set your break in and for how long a period of time. After the break in drain the oil and put fresh stuff in with zinc. This is very critical or you will be doing this all over again with a new cam. Syn oil is just way to slippery to break in a new camshaft and lifters. The zinc additive comes after the break in and that is also critical because flat tappet cams and lifters hate modern oils. Take short cuts in any way and you will pay my friend............... how do i know, well lets just say i learned the hard way. Cheers.
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1957 Pontiac Pathfinder Deluxe sedan restored 261 six
1974 Chevrolet Caprice Estate wagon low mileage original 400 V-8
long stroke my cam and lifters are hydralic wouldn't that be different ? or is syn just to slippery to spin the lifters push rods as they should ??
Both solid cams and hydro cams have to be properly broken in. Syn oil is never recommended for breaking in a cam or even a motor for that matter. With an engine rebuild syn oil will not allow the rings to properly break in. Always replace the cam and lifters as a set and never reuse old lifters because they will grind into the new camshaft lobes. A break in oil is cheap insurance but it is just that a break in oil and not to left in the crankcase. You have to run the engine at a higher rpm for about 20 - 30 minutes, set the idle speed higher to do this and be with the car in case some expensive noises start to happen. Drain the break in oil after the break in an replace with a quality oil and add ZINC if it is a flat tappet cam. Roller cams and lifters do not require ZINC. Use the cam shaft supplier for the proper rpm setting and break in time for when you actually break in the cam. Not doing any of this means that you will be replacing your cam real soon again. Cheers.
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1957 Pontiac Pathfinder Deluxe sedan restored 261 six
1974 Chevrolet Caprice Estate wagon low mileage original 400 V-8
Thank you long stroke..I didn't think about the rings breaking in ..I would agree syn would be away to slippery for that ..I am just covering all the bases to be safe and not sorry