Rebeldryver's '70 Caprice Granny's Luxo-Muscle-Barge

[Beagle]

what the hell man, did you get a box of Rhoad's lifters by mistake? Is it a mechanical bang noise or ticky noise like when you've wiped a lobe? The RPM thing is kinda funky.

[DanStokes]

They sound like Rhodes or similar lifters. A buddy had a set in a SBC in a Caprice and they did that. And did so for MANY miles. I'd guess changing lifters will tell the story.

Dan

[Scott Liggett]

what the hell man, did you get a box of Rhoad's lifters by mistake? Is it a mechanical bang noise or ticky noise like when you've wiped a lobe? The RPM thing is kinda funky.

It's more tapping like the rockers are a bit loose. That is all. There is nothing wrong with the cam. Not with what I saw adjusting the valves. They sure do act like Rhoads. Ron Isky mentioned them and that is what I said they were acting like. Three seconds after shutting off engine, the valves all close. The lifters don't hold pressure at all.

[Old Dog]

I just went back and reread this whole blog. it will be 3 years this month that you stated that you were not happy with the Isky lifters. Maybe its time to bite the bullet and go to another cam company for a new cam and lifters.

[Scott Liggett]

I just went back and reread this whole blog. it will be 3 years this month that you stated that you were not happy with the Isky lifters. Maybe its time to bite the bullet and go to another cam company for a new cam and lifters.

You read the whole blog? You got more time than me. This car hasn't been my daily driver until now. I was averaging about 1300 miles per year. The reason I haven't been so up in arms to fix it.

If I do anything, I will just change the lifters, dump in some zinc, and rebreak in the cam.

[Huskinhano]

A though crossed my mind, it's probably not the case. I seem to recall tappets between GM motors in a lot of cases are almost identical except for where the bleed hole or chamfer in the middle is located. I've read it's easy to get them mixed up and have issues with the tappets bleeding down because this hole gets uncovered from the lifter bore in some applications, like higher lift cams.

[Scott Liggett]

They rotate, so of course, the holes come uncovered, then covered. The different styles are designed in bleed off lifters, aka Rhodes; and the stock style.

[Huskinhano]

They rotate, so of course, the holes come uncovered, then covered. The different styles are designed in bleed off lifters, aka Rhodes; and the stock style.

No no, you misunderstood me Scott. The orifice on the side is at different heights from he base. I know it's especially an issue with Pontiacs. Chevy tappets are th same diameter and over all height but the Chevy bleed orifice is higher then the Pontiacs. The Chevy tappets are cheaper and will work on stock Pontiac cams but n high lift, the orifice becomes uncovered and bleeds down.

[CTX-SLPR]

No no, you misunderstood me Scott. The orifice on the side is at different heights from he base. I know it's especially an issue with Pontiacs. Chevy tappets are th same diameter and over all height but the Chevy bleed orifice is higher then the Pontiacs. The Chevy tappets are cheaper and will work on stock Pontiac cams but n high lift, the orifice becomes uncovered and bleeds down.

Buick's have the same problem with Chevy lifters.

However I doubt that he's running Buick or Pontiac lifters and that it's pushing the bleed hole out the bottom of the lifter bore even if he was. I think the lifters just have excessive internal clearance and are bleeding down too fast.

[TheSilverBuick]

Buick's have the same problem with Chevy lifters.

However I doubt that he's running Buick or Pontiac lifters and that it's pushing the bleed hole out the bottom of the lifter bore even if he was. I think the lifters just have excessive internal clearance and are bleeding down too fast.

I was thinking the same thing.

[Huskinhano]

Buick's have the same problem with Chevy lifters.

However I doubt that he's running Buick or Pontiac lifters and that it's pushing the bleed hole out the bottom of the lifter bore even if he was. I think the lifters just have excessive internal clearance and are bleeding down too fast.

I agree with what you said. I was just throwing it out there.

[Huskinhano]

Buick's have the same problem with Chevy lifters.

However I doubt that he's running Buick or Pontiac lifters and that it's pushing the bleed hole out the bottom of the lifter bore even if he was. I think the lifters just have excessive internal clearance and are bleeding down too fast.

I agree with what you said. I was just throwing it out there.

[Scott Liggett]

I think I goofed up the heater hoses on the car the last time I pulled the engine out. I think I replaced all of them at that time. Well, the heater works so so until the thermostat opens, then it's sauna time in the car.

I don't understand why this engine always took forever to get warmed up and cools off so fast. It's all iron. My Impala is up to 180* in 5 minutes. This one takes nearly the entire commute of 15 minutes before it's up to that temp. Though, it runs about 160-170 in these temps of near zero.

[TheSilverBuick]

Timing and fuel mixture.

[squirrel]

it's running too damn efficient....