454 or stay with a 350? 74 K5 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ItsNotABlazer · 06-07-2005, 12:29 AM

I was contemplating putting a 454 I was about to go pick up tomorrow into my 74 K5. A friend of mine who has owned several good 4wd Toyotas thinks the big block will be too much power and be a parts breaker. He has seen it happen a lot on the rocks and I plan to do some wheeling on the rocks when it is done. I am not worried about the gas mileage or anything just wondering you guys opinion on whether the 454 with a mild build would be toooo much power. I know I know theres no such thing right? lol

I also thought about pulling the 355 out of the 75 Jimmy and using it in the K5 and using the 454 in the Jimmy.

Brad

RED72blazer · 06-07-2005, 12:45 AM

i WOUDN'T TEAR APART A 92K 74 BLAZER!

ItsNotABlazer · 06-07-2005, 12:48 AM

Well the 92k miles is kinda a funny story......it is the actual miles but the truck has not been driven in at least 10 years and it sat outside for most of that time without a top....a tree limb fell on it and crushed it according to the guy I bought it from .....for $200 at that

I figure the transfer case is worth that much anyway lol. It will be basically a complete rebuild on it anyway.

Brad

Hoods69BadBowTie · 06-07-2005, 01:50 AM

I know its been done before but I am not sure of the being a "parts breaker" would definantley be sweet to have a 454 in there.
-Later

k-20 · 06-07-2005, 05:12 AM

i dont think there would be a problem,theres a big differance between chevy running gear and "toy"ota stuff!

Burt4x4 · 06-07-2005, 11:35 AM

So what kinda drive train/axles you got under there? Stock?
I just droped a 454 in my 72 and it is the best thing sence sliced bread

My drivetrain is far from stock though. I did mild rock crawling with the 350 I had and I expect it to be even better now as I will not need as much RPM to do the same thing with the 454. Plus fireroads, muddin, sand dunes, etc...is all WAY more fun now with a RAT thumpin the heartbeat!!! I say go for it. The 454 will bolt right up to your SBC crossmember and bell housing...DoIt

ItsNotABlazer · 06-08-2005, 04:34 AM

I was planning on eventually running basically the same setup you have with the exception of possibly using a turbo 400........thats what was in it and I feel like a clutch is just one more thing to go wrong lol

Got the engine today and just got back home after leaving @ 9:30 am......18 hours of driving and pulling and loading an engine and trans,,, woohooo bedtime for me.

Brad

Hoods69BadBowTie · 06-08-2005, 07:11 PM

Glad you decided to do it. Should be sweet.
-Later

06-07-2005, 12:29 AM	#1
ItsNotABlazer The full convertible guy Join Date: Jul 2001 Location: Paris Texas Posts: 728	454 or stay with a 350? 74 K5 I was contemplating putting a 454 I was about to go pick up tomorrow into my 74 K5. A friend of mine who has owned several good 4wd Toyotas thinks the big block will be too much power and be a parts breaker. He has seen it happen a lot on the rocks and I plan to do some wheeling on the rocks when it is done. I am not worried about the gas mileage or anything just wondering you guys opinion on whether the 454 with a mild build would be toooo much power. I know I know theres no such thing right? lol I also thought about pulling the 355 out of the 75 Jimmy and using it in the K5 and using the 454 in the Jimmy. Brad __________________ 2012 Kawasaki Vaquero (Lime Green) 2000 BMW 740iL 1995 Chevy ECSB riding on air 1975 GMC Jimmy 2WD lowered 4/6 1972 Chevy Trazer soon to be roadster 1965 Mustang 289/3 speed (friends dad bought it new) 1964 Chevy C10 (dad bought it new)

06-07-2005, 12:45 AM	#2
RED72blazer urban fourwheelin Join Date: Aug 2002 Location: Seattle Posts: 1,007	i WOUDN'T TEAR APART A 92K 74 BLAZER! __________________ 1972 K5 Blazer with Cummins 4BT, NV4500 swap in the parts gathering stage.

06-07-2005, 12:48 AM	#3
ItsNotABlazer The full convertible guy Join Date: Jul 2001 Location: Paris Texas Posts: 728	Well the 92k miles is kinda a funny story......it is the actual miles but the truck has not been driven in at least 10 years and it sat outside for most of that time without a top....a tree limb fell on it and crushed it according to the guy I bought it from .....for $200 at that I figure the transfer case is worth that much anyway lol. It will be basically a complete rebuild on it anyway. Brad __________________ 2012 Kawasaki Vaquero (Lime Green) 2000 BMW 740iL 1995 Chevy ECSB riding on air 1975 GMC Jimmy 2WD lowered 4/6 1972 Chevy Trazer soon to be roadster 1965 Mustang 289/3 speed (friends dad bought it new) 1964 Chevy C10 (dad bought it new)

06-07-2005, 01:50 AM	#4
Hoods69BadBowTie Chevys Kick A$$ Join Date: Jan 2005 Location: Zootown, MT Posts: 12,699	I know its been done before but I am not sure of the being a "parts breaker" would definantley be sweet to have a 454 in there. -Later __________________ HOODS is what I answer too -'79, '77, '88 Pickup Sold, '85 Camaro, '83 T/A, '81,'83,'90 K5 Blazer All Sold -'79 3/4 ton "Big Yellow Bananna" Lifted 4spd. 39.5 TSL Swampers, The money Pit -'86 K5 Blazer Silverado 6.2 4" lift 35"s -'95 Ext. Cab Shorty 4" Tuff Country rolling 35" M/T's -'83 Monte Carlo T-Tops. 126,500 Original Miles -LATER I would rather push a Chevy then drive a ford!!

06-07-2005, 11:35 AM	#6
Burt4x4 Registered User Join Date: Feb 2000 Location: Modesto, CA Posts: 1,842	So what kinda drive train/axles you got under there? Stock? I just droped a 454 in my 72 and it is the best thing sence sliced bread My drivetrain is far from stock though. I did mild rock crawling with the 350 I had and I expect it to be even better now as I will not need as much RPM to do the same thing with the 454. Plus fireroads, muddin, sand dunes, etc...is all WAY more fun now with a RAT thumpin the heartbeat!!! I say go for it. The 454 will bolt right up to your SBC crossmember and bell housing...DoIt __________________ 1972 K5 MPFI454/Sm465/Np205/D60/14FFd/Re-Centerd H1s w/Swamper Iroks

06-07-2005, 05:12 AM	#5
k-20 Registered User Join Date: Jan 2005 Location: tasmania.australia Posts: 170	i dont think there would be a problem,theres a big differance between chevy running gear and "toy"ota stuff!

06-08-2005, 04:34 AM	#7
ItsNotABlazer The full convertible guy Join Date: Jul 2001 Location: Paris Texas Posts: 728	I was planning on eventually running basically the same setup you have with the exception of possibly using a turbo 400........thats what was in it and I feel like a clutch is just one more thing to go wrong lol Got the engine today and just got back home after leaving @ 9:30 am......18 hours of driving and pulling and loading an engine and trans,,, woohooo bedtime for me. Brad __________________ 2012 Kawasaki Vaquero (Lime Green) 2000 BMW 740iL 1995 Chevy ECSB riding on air 1975 GMC Jimmy 2WD lowered 4/6 1972 Chevy Trazer soon to be roadster 1965 Mustang 289/3 speed (friends dad bought it new) 1964 Chevy C10 (dad bought it new)

06-08-2005, 07:11 PM	#8
Hoods69BadBowTie Chevys Kick A$$ Join Date: Jan 2005 Location: Zootown, MT Posts: 12,699	Glad you decided to do it. Should be sweet. -Later __________________ HOODS is what I answer too -'79, '77, '88 Pickup Sold, '85 Camaro, '83 T/A, '81,'83,'90 K5 Blazer All Sold -'79 3/4 ton "Big Yellow Bananna" Lifted 4spd. 39.5 TSL Swampers, The money Pit -'86 K5 Blazer Silverado 6.2 4" lift 35"s -'95 Ext. Cab Shorty 4" Tuff Country rolling 35" M/T's -'83 Monte Carlo T-Tops. 126,500 Original Miles -LATER I would rather push a Chevy then drive a ford!!

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