Found a guy selling a 454 .040 over H426CP pistons? Block is 3999289 says PASS HI PERF under timing cover (Dumb ass me forgot to look at the date code) with 35168 on the front pass side of block, block is a 4 bolt. Heads are 358049, date C 9 82. With a Comp cams 11-208-3 cam, and a RPM intake. Heads are off. Comes with a Demon (750 but forgot which model) carb. Has less than 1000 miles on it.

Is it worth $1700? How are those heads (they seem ok looking at some of the searching I did on this site, but not sure if the date code menas anything). Any idea of what compression is? Are those pistons any good? What size valves do those heads have?

Any help would be apreciated.

(heads might be 353049)


[This message has been edited by theflash (edited April 14, 2005).]

Never let it be said that I'm narrow minded,, that's a GOOD deal. But any time you buy a used motor, get a guarentee that the block and heads are not cracked.

I agree. a 4 bolt block is excellent and the 049 heads prob the best factory head GM made.
All 454 blocks said hi perf pass so nuttin special there.
Sounds like a good deal if all is in working order.
buying a used engine is just so risky.

I know buying anything used is risky, but the guy took the motor out of a 68 Chevelle to replace it with a 540 cu in motor, he is also building a 572 for a race car he picked up. He is also a NY fireman. So I think he is trust worthy and is just looking to clean up the garage of stuff he is not going to use.

get it in writing that the heads/block arent cracked or your money back.

Go for it.

Hmmmm, let's see, it would be a good deal FOR ME! http://www.nastyz28.com/ubb/biggrin.gif

Yes, it's a very good deal. It's a pass hi perf block, 4 bolt, a set of the best if not the best oval port heads, a $400 carb, a $200 intake, and more. Call him NOW, right NOW http://www.nastyz28.com/ubb/wink.gif lol

Oh yeah, a .040 454 is 463 cubes I think. A 454 can "usually" go .125 over which would put you at 482 cubes! And Scat can probably hook you up with a stroker crank to put you well over 500 cubes!! See how things keep escalating http://www.nastyz28.com/ubb/biggrin.gif You could sell the stock 454 crank easy and get some of your cash back and....dang is this your engine or mine???? http://www.nastyz28.com/ubb/smile.gif Good luck and keep us posted please!

OK, I called the guy and said I would take it. I should be picking it up Tuesday. More questions to follow http://www.nastyz28.com/ubb/wink.gif

Motor is home, now the planning begins. One possible option I was thinking of going with is the Performer RPM-O heads and cam kit. Any thoughts on this? Seems like a pretty radical cam. Any way I could get away with a bigger intake on with that cam? Anyone have an idea of what my compression would be with either set of heads?

Gasket port match the 049's and run 'em. Very good large oval port heads. Unless you are dead set on aluminum, the Rpm's are good but so are your 049's. Cam selection depends on what the rest of the build up will be. Comp ratio, auto and stall- standard trans , gears etc, etc. It is a system of parts to work together for optimum power. Desk Top Dyno lets you build your combo and check to see if it is working right. It is almost a science.

I was liking the RPM's over the 049's due to the chamber volume. The RPM's are 110 cc and the 049's are 122 cc. I don't know how much difference in compression that makes, but I'm guessing quite a bit. The lower end has already been to the machine shop and is fresh, so I was not planning on taking it apart to put different pistons in (I'm guessing that would require to be rebalanced?) The pistons in it are Sealed Power Hyper's with a .100 dome.

I'm not changing the drivetrain so it'll be backed by a 2800 stall with 4.10's.

The RPM cam looks pretty hot for the BBC, but I know little about the real science of cams, and will be comparing this cam to others including the one used in the BSE combo.



[This message has been edited by theflash (edited April 26, 2005).]

The RPM cam needs good compression to run RIGHT b/c it is an old-school high compression CAM! At least 10.5 to 1 AND generally 11+ to 1 to run GREAT!

Too high for pump gas nowadays AND I am really supprised that E-brock hasn't figured this out years ago???

pdq67

[This message has been edited by pdq67 (edited April 24, 2005).]

Thanks pdq. I was getting some of my info from the Edelbrock site where they dyno tested the RPM-O. They claim 540 hp with those heads, cam and intake on a 9.5-1 motor. I am still trying to figure out my compression ratio, and I am hoping to be close to 9.5-1. They used a .095 domed piston, and mine are .100 dome. OK, now I realize they probably over rate their results, but how far off can they be?

What would you suggest for a cam, or what should I look for in a cam? I was going to go solid roller, but the budget is telling me hydralic flat tappet, lol.

I haven't bought the eddy heads yet, but I thought buying new heads would be easier than tearing the motor apart just to put new pistons in to raise my compression and using the 049 heads.

ttt

Sorry to jump your post but I would be interested in buying those 049 heads from you if you go eddy LMK

<font face="Arial,Verdana" size="2">Originally posted by badazz81z28:
Sorry to jump your post but I would be interested in buying those 049 heads from you if you go eddy LMK</font>

Hey badazz I sent you an email a few days ago, did you get it? I was asking about your valve covers. As far as the heads go, You'll be first on the list, but I am going to keep them for now incase I decide to build a blower motor.

I put a good old-fashioned CC 282S solid cam in my about 9.8 to 1 CR. 496" motor.

Nothing fancy, just good old max. midrange grunt!!

And a set of cast-iron Merlin ovals.

If I had it to do over again, I would go with the Aluminum 310 Canfields since there are no TRUE aluminum large ovals out there that don't cost an arm and a leg!! (290 cc "ROVALS" aren't true large ovals to me!!!)...

And I'm a solid cam guy b/c I like the about 4 percent power increase across the broad that a solid will produce when compared to an identically spec'd hy-cam...

pdq67

If those are the same head as GM's aluminum 110cc "roval", the combustion chamber is a squirrely shape and most pistons won't fit, even closed chamber. SRP makes some now that are tailored to it. Does it have a steel or cast crank? 4-bolt blocks are made to be beat on and hypereutectic pistons aren't. Rebalance and hone it with better pistons with new rings, sell your low mileage slugs on ebay. Go forged all the way and drive it like you hate it.

Thanks for the info guys, keep it coming. I started a new thread in the hi po section with a little more info.