twin t76 spool time
Thread Starter
TECH Apprentice
Joined: Mar 2006
Posts: 361
Likes: 1
From: australia
twin t76 spool time hey guys,
can you give me your opinion on this set up.
358 cubes,sbc , twin turbonetics 76mm turbo's, S trim turbine wheel
roller cam , dart pro 1 heads, power glide, methanol fuel, drag race only,
NO NITROUS OXIDE ALLOWED, 2 38mm w/g's per bank....
what turbine a/r should i get....????
rpm from 5500 to 8000-8500 ish
thanks
ash
can you give me your opinion on this set up.
358 cubes,sbc , twin turbonetics 76mm turbo's, S trim turbine wheel
roller cam , dart pro 1 heads, power glide, methanol fuel, drag race only,
NO NITROUS OXIDE ALLOWED, 2 38mm w/g's per bank....
what turbine a/r should i get....????
rpm from 5500 to 8000-8500 ish
thanks
ash
Last edited by smokinHawk; Mar 25, 2008 at 08:37 AM. Reason: ya just dont say nos.
Thread Starter
TECH Apprentice
Joined: Mar 2006
Posts: 361
Likes: 1
From: australia
hellbents,
thanks for reply.
already have the .81 's , they sppol to 4000rpm on flat stall, but engine will not pull up any higher, even if i wind up manual bosst valve. If i put the twin 61mm back on, it goes to 5700 rpm...
i think the 76mm turbo's arenot in there sweet spot...
just trying to gte ideas what exhaust a/r's tp put on..
how do you think .68 a/rs would go?
thanks
TECH Regular
Joined: May 2005
Posts: 485
Likes: 0
hey guys,
can you give me your opinion on this set up.
358 cubes,sbc , twin turbonetics 76mm turbo's, S trim turbine wheel
roller cam , dart pro 1 heads, power glide, methanol fuel, drag race only,
NO NOS ALLOWED, 2 38mm w/g's per bank....
what turbine a/r should i get....????
rpm from 5500 to 8000-8500 ish
thanks
ash
can you give me your opinion on this set up.
358 cubes,sbc , twin turbonetics 76mm turbo's, S trim turbine wheel
roller cam , dart pro 1 heads, power glide, methanol fuel, drag race only,
NO NOS ALLOWED, 2 38mm w/g's per bank....
what turbine a/r should i get....????
rpm from 5500 to 8000-8500 ish
thanks
ash
Thread Starter
TECH Apprentice
Joined: Mar 2006
Posts: 361
Likes: 1
From: australia
gtk 1000's / 850 in the workshop now...
no use buying new ones
actually got them before i knew about fored inductions sales.
\thanks
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Thread Starter
TECH Apprentice
Joined: Mar 2006
Posts: 361
Likes: 1
From: australia
need those turbo's to run the class...
up against roots and screw blowers
have to run minuim 6.5 @ 210 mph ......
last pass was 7.2 @ 191 mph with twin gtk m550's
on 355 cube engine
thanks
ash
Last edited by crashly; Feb 17, 2008 at 11:15 PM. Reason: .
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TECH Apprentice
Joined: Mar 2006
Posts: 361
Likes: 1
From: australia
cool, starting to get some answers...
what stall converter you got?
even tho you have 50 more cubes....
i suppose the .68 a/r on 358 cubes would be comparable to your.81 a/r on 408 cubes???
pictures of the drag car this engine is in.
thanks
Last edited by crashly; Feb 17, 2008 at 11:23 PM.
Thread Starter
TECH Apprentice
Joined: Mar 2006
Posts: 361
Likes: 1
From: australia
engine on stand not run( raced..)....( twin gtk 1000's)
little spool up troubles..
gtk 1000/850 come with .81 a/r's hotside.... only gets to 4000 rpm ..
thinking i need a smaller a/r OR looser converter. ???
engine in drag car , twin gtk 550's
355 cubes..
magic spool, can do pro tree start.
maxed out turbos @ 33 psi
run 7.2 @ 191 with 10.2 : 1 a/f ratio ( lazy)
thanks
ash
Thread Starter
TECH Apprentice
Joined: Mar 2006
Posts: 361
Likes: 1
From: australia
Thread Starter
TECH Apprentice
Joined: Mar 2006
Posts: 361
Likes: 1
From: australia
couple of turboed chevy altereds in australia....
white altered:
355 cubes sbc twin 61mm , mech fuel injection
runs 7.2 @ 191
black twin turboed sbc alterd:
355 cubes , twin 66 mm , mech fuel injection
runs 4.7 @ 131 ( went 1.02 60' , and backoff to not break out...lol)
and
8.0 @ 171
black single turbo altered:
498 cube ,bbc , single thumper, efi ...
runs 7.1 @ 191.5
white altered:
355 cubes sbc twin 61mm , mech fuel injection
runs 7.2 @ 191
black twin turboed sbc alterd:
355 cubes , twin 66 mm , mech fuel injection
runs 4.7 @ 131 ( went 1.02 60' , and backoff to not break out...lol)
and
8.0 @ 171
black single turbo altered:
498 cube ,bbc , single thumper, efi ...
runs 7.1 @ 191.5
Last edited by crashly; Feb 20, 2008 at 02:59 AM.
couple of turboed chevy altereds in australia....
white altered:
355 cubes sbc twin 61mm , mech fuel injection
runs 7.2 @ 191
black twin turboed sbc alterd:
355 cubes , twin 66 mm , mech fuel injection
runs 4.7 @ 131 and
8.0 @ 171
black single turbo altered:
498 cube ,bbc , single thumper, efi ...
runs 7.1 @ 191.5
white altered:
355 cubes sbc twin 61mm , mech fuel injection
runs 7.2 @ 191
black twin turboed sbc alterd:
355 cubes , twin 66 mm , mech fuel injection
runs 4.7 @ 131 and
8.0 @ 171
black single turbo altered:
498 cube ,bbc , single thumper, efi ...
runs 7.1 @ 191.5
TECH Addict
Joined: Aug 2004
Posts: 2,866
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couple of turboed chevy altereds in australia....
white altered:
355 cubes sbc twin 61mm , mech fuel injection
runs 7.2 @ 191
black twin turboed sbc alterd:
355 cubes , twin 66 mm , mech fuel injection
runs 4.7 @ 131 and
8.0 @ 171
black single turbo altered:
498 cube ,bbc , single thumper, efi ...
runs 7.1 @ 191.5
white altered:
355 cubes sbc twin 61mm , mech fuel injection
runs 7.2 @ 191
black twin turboed sbc alterd:
355 cubes , twin 66 mm , mech fuel injection
runs 4.7 @ 131 and
8.0 @ 171
black single turbo altered:
498 cube ,bbc , single thumper, efi ...
runs 7.1 @ 191.5
what fuel do you have to run?? are you running chargecoolers?? how much boost do you guys normally run??
Chris.
Thread Starter
TECH Apprentice
Joined: Mar 2006
Posts: 361
Likes: 1
From: australia
no coolers
all methanol fuel
my altered ( white one), sbc, we ran 30+ psi with twin gtk 550's (61mm) , Mech inject.
geof kelly, sbc , twin 66mm turbo's , black altered, runs 20 ish psi...mech inject
mark hinchelwood , bbc , single thumper, runs 26 ish psi..... EFI
cheers ash
p.s
twin gtk 1000's (76mm ) fitted to 358 cube sbc
will see how they go soon....
going into white altered.
same car went 6.3 @ 216 mph with all iron 366 cube sbc, with D series PSI screw charger.
hoping for same or better with twin turbo's
all methanol fuel
my altered ( white one), sbc, we ran 30+ psi with twin gtk 550's (61mm) , Mech inject.
geof kelly, sbc , twin 66mm turbo's , black altered, runs 20 ish psi...mech inject
mark hinchelwood , bbc , single thumper, runs 26 ish psi..... EFI
cheers ash
p.s
twin gtk 1000's (76mm ) fitted to 358 cube sbc
will see how they go soon....
going into white altered.
same car went 6.3 @ 216 mph with all iron 366 cube sbc, with D series PSI screw charger.
hoping for same or better with twin turbo's
Last edited by crashly; Feb 20, 2008 at 02:40 AM. Reason: .
Teching In
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Twin T76 Im running 406 sbc,twin t76 wit .68 A.r....My boost come on hard around 3500...Planning on swappin over to .81....
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