Are big singles the future?

SPEEDSHIFT

SPEEDSHIFT

New member
Just looking around at the big dogs new setups for drag racing I am noticing a lot of crews going from compounds and triples to large singles with nitrous. I get the appeal of a big single as I am moving in that direction as well, less weight, less chance for failures.

My question is, what kind of nitrous setups and cam profile are they using to make it all go. I am looking at camshafts today to help keep my single S485 lit, and I figured I would ask to see what the fast guys are doing.
 
I tend to agree. Most of the big names in this game are running large singles, more displacement, and electronically controlling fuel. (Common rail)
Sure makes swapping a turbo easier. (No race rig here either, just a spectator.)
 
Transbrakes, bump boxes, dump valves and nitrous are a big reason why Big singles are working....try a 102mm on a normal truck and it’s probably not going to work.
 
JQmile said:
Transbrakes, bump boxes, dump valves and nitrous are a big reason why Big singles are working....try a 102mm on a normal truck and it’s probably not going to work.
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Yeah, I saw Lavon mention some things about the Rossler TH400 they use in their new truck, but even across the board from 11.90, 10.90, Super Street, 5.90, etc. Everyone seems to be using singles.

Its just interesting how things are changing.
 
Actually if you think about it, big singles go back to Bradenton in 2010 iirc where I think it was a mid 10 run by Aron Nick using a 478. Everyone else used compounds, and thats when the big single explosion took off. Then the whole 5.9 vs 6.7 can spool XYZ better debate started. Thank God Australians solved that issue.
 
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I think that with the advancement in cylinder head designs along with better camshafts guys are seeing that they don't need huge boost pressures to make big power. Single turbos coupled with a big wastegate and some nitrous can accomplish the same things that twins and triples were doing. We've gone 10.00's in a 7000lb truck with a box 72sxe and some nitrous. Pretty hard to argue against single turbos when guys are doing amazing things with them.
 
Is any part of this that more and more guys are building dedicated race trucks vs a weekend race truck that is still decently streetable? I don't know, just speculating.
 
JQmile said:
Transbrakes, bump boxes, dump valves and nitrous are a big reason why Big singles are working....try a 102mm on a normal truck and it’s probably not going to work.
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A good torque convertor makes a dump valve redundant. Yes programming is important, probably moreso on the gas side of things.

42651298_10156032295753335_6181957200357883904_o.jpg


Here's a little SBF with a 91mm turbo and a TIGHT non-optimal convertor. Maxes out a 3 bar map in 4 seconds from idle. No nitrous.

Most he could make on the brake before I tinkered was about 6 psi.
 
blackmega3500 said:
Actually if you think about it, big singles go back to Bradenton in 2010 iirc where I think it was a mid 10 run by Aron Nick using a 478. Everyone else used compounds, and thats when the big single explosion took off. Then the whole 5.9 vs 6.7 can spool XYZ better debate started. Thank God Australians solved that issue.
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Not to start a pissing match but I was entered in that race and all entries had to run a single turbo only.
 
f6jbob said:
Not to start a pissing match but I was entered in that race and all entries had to run a single turbo only.
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Thanks for clarification! I think you understood my point.

I just remember mainly the 10 he ran not only blew people's minds, but put bullseye and b&b tooling on the diesel radar.
 
Aron, Bruce, and myself were sponsored with turbos from Bullseye. It was a fun event. Especially for us northern boys at that time of the year.:Cheer:
 
blackmega3500 said:
Thanks for clarification! I think you understood my point.

I just remember mainly the 10 he ran not only blew people's minds, but put bullseye and b&b tooling on the diesel radar.
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It was also 66mm inducer, 2.6 sled pull type rules. I ran that race also, was a fun time and wish the class would have took off.
 
jasonc said:
It was also 66mm inducer, 2.6 sled pull type rules. I ran that race also, was a fun time and wish the class would have took off.
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Didn't you buy a turbo off ol' blackmega3500pingasucker and almost miss the race cause he was a dewshy seller?


See that is how it usually goes, once a dewshbag, always a dewshbag........ :hehe: :hehe: :hehe:
 
RacinDuallie said:
Didn't you buy a turbo off ol' blackmega3500pingasucker and almost miss the race cause he was a dewshy seller?


See that is how it usually goes, once a dewshbag, always a dewshbag........ :hehe: :hehe: :hehe:
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RacinDuallie said:
Long before that, think late '96/'97 was when it was affordable. If you been around that long anyhow. :hehe:
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I'm flattered by your obsession with me, but please remove the lotion from the keyboard!

You're so cute when your wrong.
 
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