847, stall is def. needed?
#1
847, stall is def. needed?
With the GM847 is a stall absolutely needed? My friend is looking at this cam, but I'm trying to figure out what all he would need. He has a stock stall right now but he thinks he has 3.73 gears though.
Also what valve springs will work? Like I said just trying to figure out what all he would need.
Would smaller cams like the 227 and hot cam need a higher stall?
Also what valve springs will work? Like I said just trying to figure out what all he would need.
Would smaller cams like the 227 and hot cam need a higher stall?
#6
Thanks guys, I've talked it over with him, probably going to be sticking with a stock cam for now. What about the smaller cams like the hotcam? Will it have the same issue?
Also he needs longtubes and a ORY, so if anyone has these items laying around let me know.
Also he needs longtubes and a ORY, so if anyone has these items laying around let me know.
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#9
Budget is a issue in his case though so I think for now no aftermarket cam will be the best route. Def. doesn't have funds for a converter.
Thanks, I think I've got him sticking to a stock cam for now, we are just going to try to take care of that knocking shortblock and get him some longtubes.
This is the black Formula I posted video of about a week or so back.
#10
TECH Senior Member
iTrader: (36)
I don't think he has a power goal in mind, I think its more sound related in his case. He said he could get a 847 for $150, I then told him let me figure out what else you are going to need. Specifically what springs and a converter, I've been around long enough to figure the rest of the equation out.
Budget is a issue in his case though so I think for now no aftermarket cam will be the best route. Def. doesn't have funds for a converter.
Thanks, I think I've got him sticking to a stock cam for now, we are just going to try to take care of that knocking shortblock and get him some longtubes.
This is the black Formula I posted video of about a week or so back.
Budget is a issue in his case though so I think for now no aftermarket cam will be the best route. Def. doesn't have funds for a converter.
Thanks, I think I've got him sticking to a stock cam for now, we are just going to try to take care of that knocking shortblock and get him some longtubes.
This is the black Formula I posted video of about a week or so back.
#11
Yeah he is lining up another short block at the moment and looking for longtubes and a ORY.
Whats funny on the knocking motor is it has been knocking for a long time now. I'm just hoping it holds together long enough that I get my car back off jackstands so I have somewhere to work on his.
Whats funny on the knocking motor is it has been knocking for a long time now. I'm just hoping it holds together long enough that I get my car back off jackstands so I have somewhere to work on his.
#12
TECH Senior Member
iTrader: (36)
Yeah he is lining up another short block at the moment and looking for longtubes and a ORY.
Whats funny on the knocking motor is it has been knocking for a long time now. I'm just hoping it holds together long enough that I get my car back off jackstands so I have somewhere to work on his.
Whats funny on the knocking motor is it has been knocking for a long time now. I'm just hoping it holds together long enough that I get my car back off jackstands so I have somewhere to work on his.
#13
Yeah, but it just won't be in his budget for a converter, springs, depending on if the shortblock came with kinda fresh lifters, his have 167k on them, well it would be outside his budget. I understand it would be a ton easier with the motor out of the car, but I guess he will just have to be patient.
#16
11 Second Club
iTrader: (1)
The 847 needs o rev too high for the stock shortblock anyway.
Far as stall, I did a ZZ4 cam which is like 24 degrees smaller on the intake than the 847 and still I saw no gain till I properly supported it, got .7 or so from a 2800 stall on STREET TIRES. In other words a cam without a stall does not work well. My car drove wonderfully, guys who knew about the cam swore it passed for stock in sound and manners.
It ran a best of 14.9 cam only(sad I know), then as I gave it slicks, stall and headers it dropped to 13.2 without ever taking off the valve covers again. That is how important it is to have supporting mods for a cam.
Far as stall, I did a ZZ4 cam which is like 24 degrees smaller on the intake than the 847 and still I saw no gain till I properly supported it, got .7 or so from a 2800 stall on STREET TIRES. In other words a cam without a stall does not work well. My car drove wonderfully, guys who knew about the cam swore it passed for stock in sound and manners.
It ran a best of 14.9 cam only(sad I know), then as I gave it slicks, stall and headers it dropped to 13.2 without ever taking off the valve covers again. That is how important it is to have supporting mods for a cam.