My son and I are putting together a 377 Small Block Chevy for drag racing and limited street use (it's 10 miles to the drag strip from my son's house). It's a relatively high rpm motor (cam peaks at 7800 rpm). Solid roller Comp cam, SS roller rockers, 400 block, AFR alum. heads, COLA 4340 crank, Lunati rods, Manley pistons @ 13:1 compression. We are thinking of using oil restrictors in the oil galleys (the block came with them), but I have heard conflicting info on whether or not to use them, drill them out, leave o-rings off, etc... What experiences or recommendations do you guys have with them?
Ken
Oil restrictors for Small Block Chevy
Moderator: John_Heard
Oil restrictors for Small Block Chevy
69 Nova 408 SBC
Best to date: 10.241 @ 128.36 mph 1.404 60ft.
Best to date: 10.241 @ 128.36 mph 1.404 60ft.
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- Posts: 158
- Joined: Fri Oct 11, 2013 7:59 pm
- Location: Mountville PA
Re: Oil restrictors for Small Block Chevy
I don't use restrictors in anything. I feel its better to oil the valvetrain and control drainback and pan windage.
Re: Oil restrictors for Small Block Chevy
I have used restrictors in everything!!!! And have had not one problem with the use of them. I even have them in my Dart block now. The only thing I do different is I drill them out bigger. Most if not all restrictors have a .060 hole in them, I drill them out to .100 for more oil flow but not flooding the top......
Blackhoodmafia!!!!
1972 Nova SS
572 C.I. BBC
Best to date: 1/8
et: 5.28
mph: 134
new wt. 3340 lbs
1972 Nova SS
572 C.I. BBC
Best to date: 1/8
et: 5.28
mph: 134
new wt. 3340 lbs
Re: Oil restrictors for Small Block Chevy
Thanks guys.
Supernova, do use o rings on the restrictors?
Supernova, do use o rings on the restrictors?
69 Nova 408 SBC
Best to date: 10.241 @ 128.36 mph 1.404 60ft.
Best to date: 10.241 @ 128.36 mph 1.404 60ft.
Re: Oil restrictors for Small Block Chevy
yes
Blackhoodmafia!!!!
1972 Nova SS
572 C.I. BBC
Best to date: 1/8
et: 5.28
mph: 134
new wt. 3340 lbs
1972 Nova SS
572 C.I. BBC
Best to date: 1/8
et: 5.28
mph: 134
new wt. 3340 lbs
Re: Oil restrictors for Small Block Chevy
I had to drill mine out to .125" to keep from burning up the pushrods.
Craig Watson
2QuickNovas Racing
5.23@131
Sponsors:
AEM Electronics
Carnivore Performance
Rapp Racing
VFN Fiberglass
Fast Shafts
2QuickNovas Racing
5.23@131
Sponsors:
AEM Electronics
Carnivore Performance
Rapp Racing
VFN Fiberglass
Fast Shafts
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