Barn motor ideas...

[Grumpy]

Damm that engine turned into a $$$$ pit fast . Amazing how they grow.. Good Luck with it .. What are ya running a chip or a Fast system ?? Remember DON'T DETONATE it and it will live .

[Steve Wood]

Dan, I am glad to see you are still with us....Happy New year!

[good2win22]

Stage and TA blocks bring their own problems...Sta ge One vs Stage Two, even fire, odd fire, uncommon oiling systems, parts availability, cost, etc.  Unquestionably, they are stronger and were built for abuse and high rpm.  The additional head bolts are really nice.

My gut feeling is that the 3.8 block is a safer choice than the 4.1 once one is into the tens.  This is based upon experience and not science.  I think the 3.8 will make the same hp because it will accommodate a bit more boost time and again without splitting.

Spending money on forged cranks, good rods, and lightweight pistons will allow one to approach 6000 rpm a lot of times without tossing something.  Lightweight pistons usually have their own problems arising from the need to use more cylinderwall clearance due to the piston alloy growth with heat.  This rounds off the rings fairly quickly so it may be better to use a heavier, low growth piston for a driver.  Also makes it more important to keep it under six thousand, imo.

I tend to think girdles are not worth the effort on a well built engine.  I suspect many will disagree with me on this.

It's my opinion that high quality machine work and a really good fuel system are the two most important things in achieving long life in a strong street engine.  Steel caps are rally a good investment IF the machine shop understands they don't just bolt on, followed by an align bore/hone.

18 degs of timing will make almost as much power as 24 degs of timing but will make an engine more linear in its approach to the detonation line.

Building an engine with nine second rotating parts will make one that is much more fun to drive in the tens for a much longer time.  As pointed out above, there are not that many cars that will run 10.5 and even fewer that will do it every week end.

I don't plan on hitting 6k on the tach unless the throttle sticks.  Going to stick with the stock shift points until testing reveals something different.  This cam is said to have a monster mid range.  Time and testing will tell. 


I haven't researched the stage blocks very much. Always considered them elusive if not unobtainable and the TA block was just out of the price range when this project started. More drooling about the aluminum block than researching. 


Glad to hear we have the same thoughts about over building the bottom end.

[good2win22]

Rich, I have yet to step up the suspension on the limited. I'm going to get to it, just going to take some time. I need to do an axle and diff swap as well. 


I believe I have the fuel system in check. -8 feed and -6 return. Right now there is dw300 in the tank. 

[good2win22]

Damm that engine turned into a $$$$ pit fast . Amazing how they grow.. Good Luck with it .. What are ya running a chip or a Fast system ?? Remember DON'T DETONATE it and it will live .

Definately not as easy on the pocket book as I was hoping for.  I did purchase a fair amount of items second hand, so not as much as one would think.  Those TA heads are brand new second hand.  Big money was spent on the rotating assembly.


Going to run a chip from Eric, that's another item I need to get to ordering.   I don't think I want to deal with a modded ECM so no low z injectors.  I'm familiar with powerlogger so going to throw a wide band into the mix to help with tuning and my education of tuning these things.

[Steve Wood]

Jason, the mid range is good on that cam, but, I think you will find with your combination that it will feel like you down shifted at 5000 rpm and 6000 will there in a split second. I think shifting at 5800 will drop the rpm to about 5000 on the next gear. Should be no problem with your components. It will not have slowed down at 5800 but it will pump the lifters about 6200 or so. Being that it will be up on the cam at 5000, there will be little loss shifting at 5800.

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[Grumpy]

Dan, I am glad to see you are still with us....Happy New year!

Ya still poke around the Buick sites.  Should be racing them next year.  Branching off on other cars though.  Figure if I want to play around now is the time to do it  Happy New Year to everyone   

[TexasT]

Dan, I am glad to see you are still with us....Happy New year!

Ya still poke around the Buick sites.  Should be racing them next year.  Branching off on other cars though.  Figure if I want to play around now is the time to do it  Happy New Year to everyone   

Im glad you stop by. Im thinking your buick powered rx7 fits right in. Do you have other irons in the fire?

[good2win22]

Spoke with Eric this evening. Gave him all the technical info and spoke about goals of the setup.  Went over some numbers and talked about his ability of flow matching a set of injectors just a tad bigger than 80's. I'd really like to get some 83's.  But with not really pushing the envelope of the build, 80's should suffice.  Sorry Mike. I'm staying with the stock un modded ECM. Classic 5.7 for 93/alky and another chipped for 110.   Should be here in a week or so.  Still waiting on the tranny....

[Grumpy]

"
;

Dan, I am glad to see you are still with us....Happy New year!

Ya still poke around the Buick sites.  Should be racing them next year.  Branching off on other cars though.  Figure if I want to play around now is the time to do it  Happy New Year to everyone   

Im glad you stop by. Im thinking your buick powered rx7 fits right in. Do you have other irons in the fire?

Mazda is a blast !! Goin in for a halo an some other safety stuff so we can go racing with it.  Have a new Shelby CSX 427 Cobra. All alum BB Ford. Looking for a 65 Griffith 200 or 400. It's basically a TVR with a small block Ford. Only weighs in @ 18/1900#s Keeping the Mazda but buying old Ford performance cars like I had before Buicks. Like a second childhood 

[Grumpy]

Spoke with Eric this evening. Gave him all the technical info and spoke about goals of the setup.  Went over some numbers and talked about his ability of flow matching a set of injectors just a tad bigger than 80's. I'd really like to get some 83's.  But with not really pushing the envelope of the build, 80's should suffice.  Sorry Mike. I'm staying with the stock un modded ECM. Classic 5.7 for 93/alky and another chipped for 110.   

I think once ya get the alky dialed in ya won't need the 110 chip. 

[Scoobum]

Jason, the mid range is good on that cam, but, I think you will find with your combination that it will feel like you down shifted at 5000 rpm and 6000 will there in a split second. I think shifting at 5800 will drop the rpm to about 5000 on the next gear. Should be no problem with your components. It will not have slowed down at 5800 but it will pump the lifters about 6200 or so. Being that it will be up on the cam at 5000, there will be little loss shifting at 5800.

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Do we have any data on the torque convertor with this engine? RPM drop at the shift points? What it flashes to off the line? RPM at the traps? Slip percentage?

[good2win22]

No data yet Brad. I went with a 3k stall.  The fella who is doing my tranny is now doing his own TC's.

[good2win22]

Parts are piling up...

[larrym]

Sweeeeet