Budget 525 Build-up (Dial-up BEWARE!)
08-02-2008, 11:58 PM
#21
Le Mans Master
Looks great!! I'm getting stuff together for a 496. '
One question-- I saw you set your rear main clearance at .003. Why so big? The reason I'm asking is that I've seen engines from the factory, both SB and BB with the rear bearing down to .0015 for better oil control. (less leak at the rear main seal)
One question-- I saw you set your rear main clearance at .003. Why so big? The reason I'm asking is that I've seen engines from the factory, both SB and BB with the rear bearing down to .0015 for better oil control. (less leak at the rear main seal)
08-03-2008, 12:27 PM
#22
Instructor
need part
hello all..... i plan on dropping this in to my 76 sb vet. need allot of things yet, brakets , pulleys & accessories , bb raditor, shroud, small diameter brake booster , carb prob(new), springs? (ihave AC)... not sure if i covered it all. any help would be much appericated ! 
ps yes ive been checking the parts/sale section but seem these are not as hot a comidty as doors , interor pieces ect .... unless you dont have them and need them
ps yes ive been checking the parts/sale section but seem these are not as hot a comidty as doors , interor pieces ect .... unless you dont have them and need them
08-04-2008, 06:27 PM
#24
Race Director
Looks great!! I'm getting stuff together for a 496. '
One question-- I saw you set your rear main clearance at .003. Why so big? The reason I'm asking is that I've seen engines from the factory, both SB and BB with the rear bearing down to .0015 for better oil control. (less leak at the rear main seal)
One question-- I saw you set your rear main clearance at .003. Why so big? The reason I'm asking is that I've seen engines from the factory, both SB and BB with the rear bearing down to .0015 for better oil control. (less leak at the rear main seal)
Rear main is also a thrust bearing and in a stick car you want to get lots of oil over the back side of the bearing where the crank makes contact with it, even in an auto.
THis is the reason some people like to open up the oil clearance on the rear main. This is just one opinion, there are many theories and opinions out there
.0015" on any main is asking for trouble, again only my opinion
03-01-2009, 12:48 AM
#26
Team Owner
Just a question
And with the longer pushrods, you will NOT be able to thread those "Kool nuts" on those sexy roller-rockers.... If you do, you'll have only a few threads holding the rocker in place, and that'll last... Oh, maybe 3-4 seconds of running time, before they shoot off the top of the engine...
Did you ever use longer ARP studs? I had standard ARP studs for and engine build and the lock nuts would only have a few threads just like you mentioned. So I used longer rocker studs and was able to use correct length pushrods
And with the longer pushrods, you will NOT be able to thread those "Kool nuts" on those sexy roller-rockers.... If you do, you'll have only a few threads holding the rocker in place, and that'll last... Oh, maybe 3-4 seconds of running time, before they shoot off the top of the engine...
Did you ever use longer ARP studs? I had standard ARP studs for and engine build and the lock nuts would only have a few threads just like you mentioned. So I used longer rocker studs and was able to use correct length pushrods
06-08-2010, 11:05 PM
#27
Instructor
Update on the engine....
Looking for headers and am dealing with the "tall deck" issue any help if the ports are raised? as well? having trouble finding this info cause I cant get any identifying numbers off here...
Any help in figuring this out would be great!
Looking for headers and am dealing with the "tall deck" issue any help if the ports are raised? as well? having trouble finding this info cause I cant get any identifying numbers off here...
Any help in figuring this out would be great!
06-08-2010, 11:36 PM
#28
Race Director
Member Since: Jan 2000
Location: Corsicana, Tx
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2020 C2 of the Year - Modified Winner
2020 Corvette of the Year (performance mods)
C2 of Year Winner (performance mods) 2019
2017 C2 of Year Finalist
Shoot a note to Pef427 here on the Forum. He has a 598" tall deck in his '68. He did some relatively minor header changes and got them to work fine. He can help you with all the other fitment issues too.
JIM
JIM
06-09-2010, 12:15 AM
#30
Race Director
Member Since: Jan 2000
Location: Corsicana, Tx
Posts: 12,603
Received 1,874 Likes
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912 Posts
2020 C2 of the Year - Modified Winner
2020 Corvette of the Year (performance mods)
C2 of Year Winner (performance mods) 2019
2017 C2 of Year Finalist
Do you still have the OEM iron heads on it?
The tall deck gets in the way of everything. Usually some issues behind left head and headers are moved outward. I think right ones do pretty decent....and left needs a little tweeking. Pef427 Has Dart heads with raised ports...so he has a worst case scenario going.
JIM
The tall deck gets in the way of everything. Usually some issues behind left head and headers are moved outward. I think right ones do pretty decent....and left needs a little tweeking. Pef427 Has Dart heads with raised ports...so he has a worst case scenario going.
JIM
06-09-2010, 12:22 AM
#31
Instructor
All the info I have on the heads are here
Now, the cylinder head details...
I'd thought I had scored a smokin' deal, by finding a set of recently-rebuilt heads off Ebay for just under $500, including shipping. Allegedly, they'd been fitted with Edelbrock Performer RPM flat-tappet springs, and the heads had been worked on, given a port-job, gasket match and the heads had been shaved and reworked to 106 cc's. The heads had indeed been ported, and the springs looked relatively new... However, since I wanted to clean the carbon out of the ports and check valve-guides, I decided to pull 'em down... I bought a valve-spring compressor from Pep Boys (since I didn't have one), a little hand-operated twisting affair sort of thing... It didn't work, as the inner spring damper kept slipping off the hooks.
I'd thought I had scored a smokin' deal, by finding a set of recently-rebuilt heads off Ebay for just under $500, including shipping. Allegedly, they'd been fitted with Edelbrock Performer RPM flat-tappet springs, and the heads had been worked on, given a port-job, gasket match and the heads had been shaved and reworked to 106 cc's. The heads had indeed been ported, and the springs looked relatively new... However, since I wanted to clean the carbon out of the ports and check valve-guides, I decided to pull 'em down... I bought a valve-spring compressor from Pep Boys (since I didn't have one), a little hand-operated twisting affair sort of thing... It didn't work, as the inner spring damper kept slipping off the hooks.
Deck height came in at .042". I'll be using the large oval-port cylinder heads, with 2.19/1.88 valves, and 106cc chambers. Head gasket thicknesses are .031, and with the camshaft I bought (a Comp Cams XR276 Hydraulic roller), the static compression ratio comes out to 9.37:1, and dynamic compression ratio of 7.6:1.
Last edited by 76gsvet; 06-09-2010 at 12:24 AM.
06-09-2010, 12:28 AM
#32
Instructor
What does
Mean?
"Large oval port" for header consideration should just call these rectangular or no?
Thanks again all.
Ps Ive been searching for answers for some time.
Deck height came in at .042".
"Large oval port" for header consideration should just call these rectangular or no?
Thanks again all.
Ps Ive been searching for answers for some time.
My loss your gain someone make me an offer!
09-22-2011, 04:53 AM
#39
Instructor
Ralphbf
Quote:
Originally Posted by 76gsvet View Post
Have motor up for sale ......
So what did you find out that makes you want to sell?
Quote:
Originally Posted by 76gsvet View Post
Have motor up for sale ......
So what did you find out that makes you want to sell?
Nothing. I finished the vet, sold it.(motor was too much for it...) Bought a chevelle frame off protour'd it and was about to install the engine when I came across a IRS frame for my chevelle.... Need a RHS Ls based block for (mounts will be welded in frame so no going back...) , so up for sale....
Im not really to bent on selling it cause 500 hp could go into anything. Considering getting another chevelle to put it into and "DRIVE" something while waiting on $$$$ eater...
But would like to fund project so will entertain SERIOUS offers.
