Ok I am getting ready to take the plunge and build a 455 , this is the plan 1 455 75 block all oil mods done to block 0.30 over true 10:1 pistons with 0.40 head gaskets .stock buick rods polished and fitted arp bolts . any problems with pump gas? arp main stud kit , TA front cover , Valve train still a question as to what cam . I like the 413 cam , but i like to cruise . Does any of this seem wrong or problamatic ?? Oh with either 70 cast ported stage1 heads , but most likely a set of aluminum heads either TA or Ede wallet will decide for me Thanks Dave
Sounds good to me. Your pump gas question will only be answered when you calculate your actual static compression ratio then plug in cam timing details as installed to calculate dynamic compression. You'll probably have to deck the block a good bit, so a mockup at cylinders 1, 2, 7 and 8 before machining will give you an idea of how much will have to be removed to get the numbers you're after. Here's some more reading on the dynamic compression ratio subject: http://www.empirenet.com/pkelley2/DynamicCR.html http://victorylibrary.com/mopar/cam-tech-c.htm Devon
Don't shimp on the research! (Re: BBB Build) Dear Dave (and V-8 Buick fans) Congrats on the project! :TU: Just a bit of advice learned "da' hard way." You might want to first fine tune your objectives for the car and then pick your performance components based on what you want the car to do - not simply what you can afford at the time. I started on a 430 build project before I realized that I didn't have a good handle on how my component choices were going to realize in my performance objectives. Thankfully, I punted before I started spending money and instead asked Jim Weise to design and build the engine for me. Jim's plan is very similar to what I was trying to do. However, Jim's experience allowed him to make much better choices in components and it is obvious even before the work has started that I'm going to get an engine much better suited for the car. Not too sure what you want out of the car, but have you been keeping up on this build that Jim is doing? http://www.v8buick.com/showthread.php?t=221289 This thread also has some very interesting ideas: http://www.v8buick.com/showthread.php?t=183826 Finally, you might want to reconsider your build from an unfortunate but increasingly necessary point of view: fuel economy. While it is usually assumed that you have to choose between "street" and "strip" there are some innovative ideas being tossed about to try to have your cake and eat it too. You don't mention which transmission you intend to match this engine to. Just going with an overdrive transmission could make the gallon "bite" less painful. So a few things to ponder. It goes without saying: but reasoning out problems :idea2:is a lot less painful than purchasing your components only to find out they don't fit (either into your lifestyle or in the worse case - with each other!! :af Cheers, Edouard :beer
From what I've seen from JW I would run main bolts over studs and that can save you alittle $.I like studs for the heads.I'm just using bolts in my bottom end from the info I read on here. Jamie
When I started getting ready to build my Buick 455 way back when, I talked a lot with Mike T. at TA Performance about what combos would work best for what I wanted to do. After getting guidance from him I ordered the parts I needed and had a local engine builder put it all together for me. I was lucky in that I found a builder that happened to have a lot of experience with Buick engines close by to my old house.
Wow I knew jim was woorking on Larrys 470 But thats impresive . . Lots of great reading Thanks guys . what i want is a strong dependable cruiser that will surprise the best of them . the 470sure sounds sweet . something to run 70 mph all day at 2800rpm and a ocational trip to the track .On pump fuel I do have a line on a set of diamond 0.30 not 0.38 over std 25 cc releive pistons and rods slightly used true 10.to1 i am told with a.40 head gasket fair price , used with my 70 Stage1 ported Heads edelbrock or B4B intake 72 Qjet worked by john Osborn for the set up i have in my car now 462 413 cam stg1 heads performer Hooke toa TH SP 400 1800 low 3200 stall converted 2" kb headders 3 " X pipe exaust out the t pipes flowmaster 50 series mufflers I have had oil issues with the block i have now took out 1 cam the first build in 90 . belived i had the problem fixed morons at last shop put cam brgs in wrong .but after the 2nd build dd it again .incorrect valve spring psi . and no phosphaites . I dont have any respectable Shops i trust in South Florida that Know Buicks .so to cut expenses I can do the oil mods Alll of them My self I have the ability to do this to my newer block after i get it sonic checked . I beleive i have alot of the basic parts Need a Bulit proof short block I think Jim will get another Job ! Am i asking for to much
The following link has a great comparison between iron head, Edelbrock head and the TA stage one head using the TA 413 cam. http://www.carcraft.com/techarticles/ccrp_0907_buick_455_cylinder_heads/index.html The TA 413 cam will let you run a Static compression ratio as high as 10.5:1 and still have a Dynamic compression ratio under 8:1. With a true SCR of 10:1 the DCR will be 7.5:1 and will run pump gas without a problem.
looks like i need to do some more research and gather up a few more $$ , I will keepyou posted as to what i finaly do , For the $ Jim is mybest shot i think I beleive he is very well qualified and would be more than confident with one of his 470 builds Just short of the mark bya few , have to see what i can sell , Anyone interested in a wife and a couple of kids LOL
Build the engine to stock bearing/piston/ring clearances,use moly grease on the cam and lifters at installation, the liquid stuff will drain off, leaving the cam unprotected,,,, make sure it has a good oiling system.... and dont boost the compression....You only have 4 bolts to hold the compression , not 5 like a nailhead.... start it up and let it warm completely up and then retork all the head bolts and intake bolts, set the timing with a light and then break it in,,, 500 miles, change oil & filter,zddp, another 500 miles, change oil&filter,zddp, and then it is ok to ''get on it''.....always keep zinc additive in it....at every oil and filter change....
Well I picked up a set od Diamod 10.5 to 1 pistons on polished rods for a start 30 over with rings , My question about them aprearance wise told only had 100 miles on them . well i talked to the person i got them from This is what i was told I beleive Him Great guy ,they look brand new except for a little carbon on the tops looks like a nice polish job on the rods but is the small end of the rod as it looks to have been heated treated is this right ? see pics . The plan to have block worked 30 over to fit pistons , 4 corner decking , cross drill crank some minor oil mods with Ta stage 1 heads / Edelbrock heads ?? How cani figure out my compression . I need to know if this combo will use pump gas or not and i can adjust some with head gasket thickness .
The discoloration at the small end of the rod is due to the standard method of inserting press fit piston pins; the end of the rod is heated enough that expansion allows the pins to be fitted by hand, then the interference fit occurs after they've cooled. Post some shots of the piston skirts and also the big ends of the rods. It looks like they've been balanced and it would be good to see if the big ends were done right. Devon
Devon thanks i will .. I have to go se my new granson right now born this mornning . I was told they were done and balanced with rings , said he had over alot of $$$$ in pistons and rods, I will post later thanks for the input . Dave
Here are some moe pics of the pistons and rods What are we looking for Devon ? i was told they were resized reconditioned and balanced? here are piston specs Buick 455 -19cc Dish 4.340" bore 1.995" CD 1.000 x 2.930 pin 658 grams 1/16-1/16-3/16 ring stack
Looking good. It looks like the rod/piston assemblies were balanced properly by removing material from the balance pads on the sides of the rods. Some shops who don't know any better remove material from the cap, which is a no-no for the BBB. It wouldn't hurt to ask about the rod bolts; Buick used a 12 point nut. These six-point nuts may indicate that ARP bolts were installed, also a good thing. Devon
Yep, so far so good. Measure the diameters on the big ends (at the parting line and 90 degrees to the parting line) to make sure all is well. Devon
Just an FYI... if you have power brakes the 413 is j.u.s.t enough for them. But an overall great performance cam.
Yardley I am running the 413 cam now I like it a lot , with a Qjet , going to try a Mighty demon 850 on the new motor I have it backed up with a th400 SP with a 1800 -3200 stall and 3:42 I have to talk to my motor guy . in Ft lauterdale, hes a pretty smart cookie Knows his Do-Do He will do my machine work and short block assy .
Devon, Why is it a no-no for the big end pads to be worked on a BBBo No: ? I would figure you'll have to damn good to get the same amount off each side of the rod to be balanced correctlyo No: . Is it the Big end don't have enough material there? I'm just curious!
