Street Perf BBC - Chevelle Tech
Performance Our High Performance area

 25Likes
Reply
 
LinkBack Thread Tools Search this Thread Display Modes
post #1 of 29 (permalink) Old Mar 23rd, 17, 4:16 PM Thread Starter
Lifetime Premium Member
George
 
Join Date: Mar 2006
Location: Lakewood, WA
Posts: 11,208
Street Perf BBC

I have one coming together but I'm leaning forward in the foxhole on the next build.

Situation:
I have a used .060" over 1973 #289 block. Looks normal casting wise. With the cyl wear, it will NOT hone to .070" and standard oversize.
It will "Likely" clean-up at .080" over/4.330" but the only slugs I have found in THAT size seem to be KB Hyper Flattops. YAWN! Auto Tec does not do .080 or .090" due to no rings (this per their tech rep).
NOT seeing offerings in .090" over/4.340" and that leaves .100 over/4.350.

Thinking this will be a street hero offering....considering SLP-H693CP100 Speed Pro .210" /-20cc dome hypers as one option. But, they are HYPER and they do have the old style rings. A "better" deal would be for me to spring for Auto Tec if I must go .100 over....

1) HAVE I MISSED a QUALITY piston set somewhere in the .080/.090" overbore in my searching?

2) Supposing there is a 1/16 ring set in 4.330 or 4.440, maybe pony up extra for Auto Tec to make me semi-custom slugs and NOT go .100 over/4.350. Source????

3) I've built a few engines every year. I've not had to go more than .070" over. Since I was a youngster in the mid 1970s, just talking earlier castings here, no 1980s stuff.....street lore was:

every 454 will go .070
darn near every one will go .090
the majority will go .100
some will go .125

I've not found a shop with a sonic checker....FOLKS WHO BORE A LOT OF BLOCKS, ESPECIALLY #289 blocks...what is the word? Mike Lewis, Mark Jones, GOSFAST Gary, etc
Thor454 likes this.

George Kettler
o SOLD 8/2016 my beloved 1970 Elky 496.
o 68 Vette 427/M-20/3.36 23 year owner
http://public.fotki.com/kettbo/gearhead/
o 68 Camaro Vert 327 project, painted, assembly stage http://www.camaros.net/forums/showth...183654&page=55

Last edited by kettbo; Mar 23rd, 17 at 7:19 PM.
kettbo is offline  
Sponsored Links
Advertisement
 
post #2 of 29 (permalink) Old Mar 23rd, 17, 5:29 PM
Lifetime Premium Member
jimmyradford
 
Join Date: Oct 2007
Location: Escondido, CA
Posts: 2,574
Re: Street Perf BBC

In for info. I have the same block in my '67 w/439 guts. My short search looks like you're stuck with .100 over.

TC Member # 4431
'04 Ram Quad-That thing has a Hemi in it!
'68 El Camino-SB 350/TH400/???
'67 Hell Camino-BB 496/TH400/???
'55 BelAir 2 door post-427/TH-400/4.10
"Good people sleep peacefully in their beds at night only because rough men stand ready to do violence on their behalf."-Orsen Wells
badrad is offline  
post #3 of 29 (permalink) Old Mar 23rd, 17, 5:34 PM
Senior Tech Team
 
Join Date: Dec 1998
Location: Lubbock, TX
Posts: 3,881
Re: Street Perf BBC

Sonic it and go .100. Take it to a shop that has good CNC equipment, they can straighten bores if needed. The new CNC hones are the $h!+, proof is in crankcase vacuum readings. Have it square decked. Check the couch cushions at all your friends houses and run forged slugs. Crate LS6's used that block, it should be a good 'un.
The best engine builder I ever knew told me that if you cringe when the tach passes 7K, you didn't build it with the right parts. ANY big bore block, built right, should be able to take getting beat on from time to time.
I know, I'm preaching to the choir.
But spending your money is almost as much fun as spending mine, George
fr8dog and badrad like this.

Gary Adrian
The correct spelling is
HILLIARY
Busted Knuckles is offline  
 
post #4 of 29 (permalink) Old Mar 23rd, 17, 7:15 PM Thread Starter
Lifetime Premium Member
George
 
Join Date: Mar 2006
Location: Lakewood, WA
Posts: 11,208
Re: Street Perf BBC

well, IF there was someone around here with a sonic tester Gary!

Back in the day, 1975, Armstrong was building an engine for some boat guy. I assisted as he short-poured the block. I think that this one went .125" over

George Kettler
o SOLD 8/2016 my beloved 1970 Elky 496.
o 68 Vette 427/M-20/3.36 23 year owner
http://public.fotki.com/kettbo/gearhead/
o 68 Camaro Vert 327 project, painted, assembly stage http://www.camaros.net/forums/showth...183654&page=55
kettbo is offline  
post #5 of 29 (permalink) Old Mar 23rd, 17, 8:33 PM
Tech Team
 
Join Date: Aug 2005
Location: KY
Posts: 818
Re: Street Perf BBC

Quote:
Originally Posted by kettbo View Post
well, IF there was someone around here with a sonic tester Gary!

Back in the day, 1975, Armstrong was building an engine for some boat guy. I assisted as he short-poured the block. I think that this one went .125" over
Dale?
kettbo likes this.
sleeper is offline  
post #6 of 29 (permalink) Old Mar 23rd, 17, 8:54 PM
Lifetime Premium Member
MARK
 
Join Date: Jul 2007
Location: CO/TO
Posts: 3,739
Re: Street Perf BBC

George

What is this engine for?

Do the work....get the results
VORTECPRO is offline  
post #7 of 29 (permalink) Old Mar 23rd, 17, 11:21 PM Thread Starter
Lifetime Premium Member
George
 
Join Date: Mar 2006
Location: Lakewood, WA
Posts: 11,208
Re: Street Perf BBC

This is for a future street strip deal. The 498 stuff, just too much for what I want (I can go plenty fast with 454 in a lighter car)....so 498 stuff will go down the road as a shortblock


anyway, back to 454
I have the block, the thumb rods, a few cams, probably trade something for a forged crank with the neighbor. I do have those 236 PPs with big intakes I took off another engine a few years back. Certainly other heads could come along. Was really looking at something SICK like a re-do of my old 68 NOVA....but a somewhat sane 454-based platform, street gears like 3.08. I do not want to be stuck in Lakewood. Using just 1-2, would still think low 12s are as certain as DEATH and TAXES.

But this is all future. Just want something DONE, sitting in the corner with a fresh th400 I have, ready to bolt into the next project. Heck, could be another '70 Elky just as well.
Thor454 likes this.

George Kettler
o SOLD 8/2016 my beloved 1970 Elky 496.
o 68 Vette 427/M-20/3.36 23 year owner
http://public.fotki.com/kettbo/gearhead/
o 68 Camaro Vert 327 project, painted, assembly stage http://www.camaros.net/forums/showth...183654&page=55
kettbo is offline  
post #8 of 29 (permalink) Old Mar 23rd, 17, 11:48 PM Thread Starter
Lifetime Premium Member
George
 
Join Date: Mar 2006
Location: Lakewood, WA
Posts: 11,208
Re: Street Perf BBC

Ideas for pistons and rings.....and IF I cannot get a SONIC test, success rate at boring #289 blocks out to 4.350
Looking for those who bore a lot of blocks
Pal Darryl says they have always gone .100-over, no issues.

George Kettler
o SOLD 8/2016 my beloved 1970 Elky 496.
o 68 Vette 427/M-20/3.36 23 year owner
http://public.fotki.com/kettbo/gearhead/
o 68 Camaro Vert 327 project, painted, assembly stage http://www.camaros.net/forums/showth...183654&page=55
kettbo is offline  
post #9 of 29 (permalink) Old Mar 24th, 17, 4:14 PM Thread Starter
Lifetime Premium Member
George
 
Join Date: Mar 2006
Location: Lakewood, WA
Posts: 11,208
Re: Street Perf BBC

OK, SLEEPER said he was 10/10 with #289 plocks to .125-over. VERY ENCOURAGING
badrad likes this.

George Kettler
o SOLD 8/2016 my beloved 1970 Elky 496.
o 68 Vette 427/M-20/3.36 23 year owner
http://public.fotki.com/kettbo/gearhead/
o 68 Camaro Vert 327 project, painted, assembly stage http://www.camaros.net/forums/showth...183654&page=55
kettbo is offline  
post #10 of 29 (permalink) Old Mar 24th, 17, 7:10 PM
Lifetime Premium Member
Mark
 
Join Date: Dec 2001
Location: Colorado Springs CO
Posts: 4,120
gotago is offline  
post #11 of 29 (permalink) Old Mar 24th, 17, 8:06 PM
Lifetime Premium Member
Mike
 
Join Date: Jul 2014
Location: eastern Utah
Posts: 353
Re: Street Perf BBC

George I have a 505 (4.350x4.250) sitting on my floor that went high tens in a 4000 pound car and it is a mark 4 block. I had no issues with it as far as ring seal or getting to hot. I think bored 100 out is not a problem. Just my opinion. But it doesn't hurt to have it checked.
kettbo likes this.
Mike 70SS is offline  
post #12 of 29 (permalink) Old Apr 11th, 17, 12:57 PM Thread Starter
Lifetime Premium Member
George
 
Join Date: Mar 2006
Location: Lakewood, WA
Posts: 11,208
Re: Street Perf BBC

I'm trying to get my 68 Camaro RAGTOP going, garage queen here for several years (spare you the saga on why, old timers here may remember). Some renno work being done near my car, she has to relocate to the neighbors while work is done near the fresh paint, etc.

OK guys, minor update here, this build is on the sloooooooow cooker here.

Meanwhile, have kept my ear to the ground. Always scrounging. BUDGET is my watchword, CHEAPO is my MANTRA!!!!!
Remember, for the street and a budget, a big displacement dumb engine is THE BOMB!!!

Neighbor down the block where I will stash my car, Dennis, scored a 454 and th400 cheap several weeks back. I dropped in, spied his BARGAIN was better than he thought...inside was a VIRGIN FORGED CRANK!!!! I made him a low buck offer on that, which he accepted, and we installed a virgin nodular crank in his engine that he is selling

so now we have
o #289 block (will send pics to VORTECPRO for eval even before a sonic check. DG in Auburn WA has a sonic checker)
note: this block is a ".100-over or bust" type deal, already .060-over with some bores not good for a refresh. Cheap-Big is to bore, makes cubes and helps breathing.
o the #2416 forged crankie mentioned above
o the truck/thumb rods

I have been eyeing the very affordable SpdPro H426P hyper pistons and #215/063/290 1967-68/late 68-69/70 respectively. As some of you will remember, maybe, this is pretty much the combo that was in my Elky's 454 from 2010--2014. (except these were forged but similar low dome pistons) And of further note, this more or less replicates THE GREAT FOUNDATION laid by Chevrolet with the 1970 LS5 454! This would be a 10:1 CR engine. The thing is, Chevy left out the cam, but I won't! Further, the heads will have some development, stuff never dreamed of or possible in a production build. Alternate heads would be some 236 PP heads here. I pulled them off a 454 I bought a few years back, discovered an upgrade to 2.19 intakes. This would be a 9:1 engine with these heads and the H426P slugs

Cam and intake to match....some budget oil system upgrades

LIKELY this would go into another 70 Elky (practical use/pick-up), a 68 Nova (sentimental use, my 1st car), or a 69 Camaro (which is on most everybody's list)! Any of these would have either moderate gearing or some OD capability.
mr 4 speed likes this.

George Kettler
o SOLD 8/2016 my beloved 1970 Elky 496.
o 68 Vette 427/M-20/3.36 23 year owner
http://public.fotki.com/kettbo/gearhead/
o 68 Camaro Vert 327 project, painted, assembly stage http://www.camaros.net/forums/showth...183654&page=55
kettbo is offline  
post #13 of 29 (permalink) Old Apr 11th, 17, 4:04 PM
Senior Tech Team
 
Join Date: Feb 2005
Location: Long Island, N.Y.
Posts: 2,183
Re: Street Perf BBC

Quote:
Originally Posted by kettbo View Post
I have one coming together but I'm leaning forward in the foxhole on the next build.

Situation:
I have a used .060" over 1973 #289 block. Looks normal casting wise. With the cyl wear, it will NOT hone to .070" and standard oversize.
It will "Likely" clean-up at .080" over/4.330" but the only slugs I have found in THAT size seem to be KB Hyper Flattops. YAWN! Auto Tec does not do .080 or .090" due to no rings (this per their tech rep).
NOT seeing offerings in .090" over/4.340" and that leaves .100 over/4.350.

Thinking this will be a street hero offering....considering SLP-H693CP100 Speed Pro .210" /-20cc dome hypers as one option. But, they are HYPER and they do have the old style rings. A "better" deal would be for me to spring for Auto Tec if I must go .100 over....

1) HAVE I MISSED a QUALITY piston set somewhere in the .080/.090" overbore in my searching?

2) Supposing there is a 1/16 ring set in 4.330 or 4.440, maybe pony up extra for Auto Tec to make me semi-custom slugs and NOT go .100 over/4.350. Source????

3) I've built a few engines every year. I've not had to go more than .070" over. Since I was a youngster in the mid 1970s, just talking earlier castings here, no 1980s stuff.....street lore was:

every 454 will go .070
darn near every one will go .090
the majority will go .100
some will go .125

I've not found a shop with a sonic checker....FOLKS WHO BORE A LOT OF BLOCKS, ESPECIALLY #289 blocks...what is the word? Mike Lewis, Mark Jones, GOSFAST Gary, etc
I believe we have some sets of "open-stock" rings on the shelf for 4.330", 4.340", 4.350", and up! I would have to check and get back to you but they all sound familiar!

I wouldn't be overly concerned about going +.080", depends on the "larger picture"? At .100" (without a sonic test) I would pass on those later castings.

Thanks, Gary in N.Y.

P.S. We are working with some 4.355" (finished bores) on 2 jobs at the moment! Have the rings (Speed-Pro) in stock for these.
kettbo likes this.

Jan. 2016 - New York Street Ride 7.56 @ 190 @ 3800#
(https://www.google.com/url?sa=t&rct=...12064104,d.cWw)
GOSFAST is offline  
post #14 of 29 (permalink) Old Apr 11th, 17, 5:06 PM
Senior Tech Team
Dennis
 
Join Date: Jul 2003
Location: kansas
Posts: 2,700
Re: Street Perf BBC

Quote:
Originally Posted by kettbo View Post
well, IF there was someone around here with a sonic tester Gary!

Back in the day, 1975, Armstrong was building an engine for some boat guy. I assisted as he short-poured the block. I think that this one went .125" over

Buy a ultrasonic tester, there are some cheaper yet, check your own bore holes.


http://www.ebay.com/itm/Digital-Ultr...0AAOSw44BYmrxF

http://s50.photobucket.com/albums/f320/ddeennis/
pics of projects and whatever.
ddeennis is offline  
post #15 of 29 (permalink) Old Apr 11th, 17, 5:17 PM Thread Starter
Lifetime Premium Member
George
 
Join Date: Mar 2006
Location: Lakewood, WA
Posts: 11,208
Re: Street Perf BBC

thanks for the tip DDEENNIS

George Kettler
o SOLD 8/2016 my beloved 1970 Elky 496.
o 68 Vette 427/M-20/3.36 23 year owner
http://public.fotki.com/kettbo/gearhead/
o 68 Camaro Vert 327 project, painted, assembly stage http://www.camaros.net/forums/showth...183654&page=55
kettbo is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Chevelle Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address. Note, you will be sent a confirmation request to this address.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome