Hmmm, decision time....

[Guest]

Your correct about the roller cam and lifters. They work just fine in a 3.1 vin t or v block. I have been running one for about 2 years. Not a peep out of it.

This stock roller kicked ass on all of the aftermarked cams that I have had in my motor buy about .5 second. Ran a 13.58 last year. (2002 impalla 3400 heads and cam. That was good enough for the fastest TGP so I haven't really leaned on it in over a year.

Do it, if you want to know something email me cause this is the first time I have been on here in months.

With a roller you don't have to worry about these new oils that don't have the flat tappet chemicals in them.

For you flat tappet guys get shell rotella diesel oil. It's got the stuff you want.

Good luck your cam install, you will be satisfied.

Jud.

I'm not just looking at the cam install, I'm looking at swapping the entire 3400, for other reasons as well, I just like the idea of priority oiling, and crosbolted mains, the windage tray (Yes I know that can be swapped onto a genI/II bottom end.) And the fact that I'd be the only one thus far to do it successfully.

BTW I inspected my flat tappet cam that is in there now the other day and it looks perfect, but I think it's really time to step up to a 3400 full swap.

[geoffinbc]

Yea I agree that a 3400 block is nice. I know in your area you were saying 3.4L blocks were expensive. But here a 3400 is about $1500ish and a 3.4L is about $500 or less.

So in my area a 3.4L is a hell of alot more economical. So I think the 3400 swap idea is indeed a good one. But the old iron lump still has its place.

For my next build I will be staying all GenI. I plan to supercharge it and do as many free or low cost improvements to the engine as I can. My horsepower goal is a clean 340hp ( I figure 100HP per litre is a good number) My build goal is low cost yet elaborating on every aspect I can. I am going full out with windage trays, scrapers, 2 piece fabricated valve covers twin TBI units and I am toying with dry sump oiling. But with the ability to fabricate everything myself it will be very cheep. At the end of it all I am going to sell parts like my fabricated valve covers as a U weld it package aswell as fully assembled.

So I guess after that rant we are both kind of on the same venture.

[Guest]

Well it's decided, I'm going 3400, I just ordered a few items that can't be used in a genI block.

[treeZ24]

such as

[Guest]

such as

Wouldn't you like to know...

[94Camaro]

I disagree with people saying roller cams are not a big deal. But today they really are..

First off you dont need an aftermarket cam for what you are doing. Just get a ragrind. The stock LSA lends itself well to a turbo grind so only lift and duration need to be modified.

Second with the problems everyone is having with flat tappet cams failing latley I would be very cautious when considering them. But these problems are really with the new oils. So it can be avoided.

Lastly of course is the power and efficiency of a roller cam. Which at any rpm is a real nice advantage.

Lastly, I have been comparing SBC, 4.3L and Gen I lifters and I believe a roller cam can easily be installed in a Gen I engine. 4.3L engines DO NOT use priority main oiling. They have an indentical oiling system to a 60* V6 with the larger left hand lifter galley feeding the cam and then the crank. Yet they use identical lifters to a small block. I used to believe that the 60* engine would starve the crank of oil when using roller lifters. But after comparing the lifters to each other I see no reason why this would happen. I think this asumption started because GM changed the oiling at the same time they added a roller cam to the 660. But the two changes may be completly unrelated. I believed this theory but never investigated it myself. But my next engine I am going to be trying a GenI block with a Hyd roller cam, because I see no reason it can't be done.

lemme know how this works out -- Crane was telling me (i asked them) that you couldnt do rollers in a 60* engine cause the lifters didnt get enough oil and would fail after around 4500 miles everytime they tried it.

if someone could prove them wrong that'd be cool

oh yea -- The Raven: use the 3400 block. and curious -- why couldnt you use a flat tappet hyd. cam in a block originally designed for a roller hyd..

i dont see why it wouldnt work -- i mean a cam is just a large cylinder cut down to make lobes... (would be nice to know why this wouldnt work if it wouldnt)

and, has anyone ever tried using the hyd. flat tappet cam in a 3400?

[Guest]

Yes, you can use a flat tappet cam in a genIII block, but why would you want to?

I'll run roller, because I want a roller cam in my engine, have wanted one in teh truck for a long while.

[94Camaro]

Yes, you can use a flat tappet cam in a genIII block, but why would you want to?

....

...GenIII block would give me full roller bumpstick, better oiling, and more displacement, but cam selection is next to nil, especially for a turbo grind...

maybe because you were bitching about not having a lot to choose from in the roller cam area. for someone who prides himself on knowing a lot, you sure aren't very bright are you?

[Guest]

....



maybe because you were bitching about not having a lot to choose from in the roller cam area. for someone who prides himself on knowing a lot, you sure aren't very bright are you?

WTF? Where did this come from?

I was never "bitching" I was merely stating a fact. I do know a fuck of a lot, so STFU, and read to comprehend, not read to start shit.

Personally I really don't care that cam selection is minimal, since I wouldn't be using anything much beyond stock for this right now anyway.

I have a few sources for roller cams, you just have to look around or know what the fuck you're doing.

[SappySE107]

The stock 3400 cam is the shit for boost according to simulations. Pretty sweet deal. The best grind I can get is nothing anyone here would think of without the software (or blind guessing). 108 lsa anyone?

[Guest]

Well these are the items I ordered, I've actually had them for a week or so, just haven't had a chance to get the pics up, until now.