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#1 |
Registered User
Join Date: Nov 2009
Location: phoenix, arizona
Posts: 21
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454 question
has anyone ran a 545 with a 350 auto trans?
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#2 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,616
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Re: 454 question
Of course!!
You might need to beef it up a bit if you're hard on the loud pedal though! |
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#3 |
Registered User
Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,332
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Re: 454 question
My brother ran a TH350 in a 468-powered Chevelle that ran in the 10s, so they can be built to handle a lot. Not out of the box though.
When he went to a 598 he stepped up to a built TH400, but the TH350 can obviously take a lot when properly prep'd.
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1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible |
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#4 |
Registered User
Join Date: Nov 2009
Location: phoenix, arizona
Posts: 21
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Re: 454 question
It has a shift kit.
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#5 |
Registered User
![]() Join Date: May 2013
Location: WEST PALM FLORIDA
Posts: 1,174
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Re: 454 question
I owned a 72 chevele with a built 454 , 650 foot pounds of torque , with a built turbo 350 , and quality converter behind it , it ran 11's , so it can be done .
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68 Long Fleet , ly6 , turbo 350 , 3-5 drop , original paint , front discs 67 Small window , 7 foot bed , tweaked 6.0 LSX 2004R Medium Olive 58 Apache fleet , 235 , offy intake , dual exhaust , 4 on the floor , red/white 69 Long Fleet , Custom , 6.0, 4l60 , AC , Medium Olive |
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#6 |
Registered User
Join Date: May 2009
Location: Canton, Tx
Posts: 175
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Re: 454 question
What are you going to do with it? are you just going to drive it or Hot Rod it?My understanding is the 350 has a 2 piece shaft and the collar is the weak link.
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#7 |
Senior Member
![]() Join Date: Dec 2013
Location: Gods country East,Tn
Posts: 8,545
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Re: 454 question
Put a power glide in it , if your engine is all that it only needs to shift once .
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#8 | |
Registered User
Join Date: Mar 2013
Location: Campbellsville, KY
Posts: 888
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Re: 454 question
Quote:
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Alex V. ------ 1967 C10 Suburban, 350/NP435, Green/Green, PS, PB, HD cooling, charging, shocks, and springs. 1985 GMC C3500 SRW, Sierra Classic, 454/TH400, white/blue. |
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#9 |
Registered User
Join Date: Jan 2011
Location: Townsend MT
Posts: 1,725
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Re: 454 question
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#10 |
Registered User
Join Date: Nov 2016
Location: lowell ma
Posts: 750
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Re: 454 question
The mind set of the drag racer.. is the reason some put a th350 behind a big block..
There is a reason gm did not.. Sure you can build the living crap out od a th350 and make it last behind the big block.. and empty your wallet doing it.. Drag racers do it. as the parts spinning are lighter.. than the th400.. Also the reason many still run a powerglide.. In a truck.. why spend the huge coin to build a th350 correctly to live a long and happy life behind a stout big block. when a basic rebuilt th400 will.. If MPH and E.T's are your goal, then sure. pull out your wallet and spend the dough on the th350 hard parts so it'll live.. Sorry. a few upgraded clutches and steels isn't enough.. no matter what your told.. if you plan on getting on that 454.. if you are just gonna cruise.. and never use the bb ft lb in anger.. then sure.. enjoy.. Many with the bb /th350 combo.. don't beat on them much. a few times in it's life at a drag strip on street tires is not beating on it.. nor is hot dogging around town on street tires and dirty streets.. Again ask why the bean counters didn't put the th350 behind a big block.. it's not like it wasn't a bolt in.. cheaper part.. And this was when warranties were very short.. 24-36k miles. if that.. and they were not that bold.. |
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#11 | |
Registered User
![]() Join Date: May 2013
Location: WEST PALM FLORIDA
Posts: 1,174
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Re: 454 question
Quote:
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68 Long Fleet , ly6 , turbo 350 , 3-5 drop , original paint , front discs 67 Small window , 7 foot bed , tweaked 6.0 LSX 2004R Medium Olive 58 Apache fleet , 235 , offy intake , dual exhaust , 4 on the floor , red/white 69 Long Fleet , Custom , 6.0, 4l60 , AC , Medium Olive |
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#12 |
Senior Member
![]() Join Date: Feb 2002
Location: Tucson, AZ USA
Posts: 7,268
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Re: 454 question
I had a '67 K/10 Suburban that the PO had put a 454/TH350 into. Problems were
1] it was an epic gas guzzler [6 city -- 8 highway]; 2] the tranny was no good for downshifting/engine braking [it would just upshift on its own], 3] the tranny pan leaked excessively, especially after a day in the mountains.
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Every 25 years I like to rebuild that 292, whether it needs it or not. |
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#13 | |
Registered User
Join Date: Nov 2016
Location: lowell ma
Posts: 750
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Re: 454 question
Quote:
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#14 |
Registered User
Join Date: Jan 2005
Location: Maysville, OK
Posts: 227
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Re: 454 question
TH350 behind a mild big block on the street will work just fine. Obviously the TH400 would be a stronger alternative, but it also takes more HP to turn.
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1972 Chevy Cheyenne Super- Pump gas 496,TH-400, TCI Stall, 3.73's,Ochre & White two-tone w/Olive Interior 1967 Chevy Short Step Drag Truck-Iron Headed 468 Making Memories My momma took me off the bottle years ago..... |
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