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Old 04-15-2007, 08:51 PM   #1
gus
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91' 454 SS Motor for my 2WD Blazer

will be posting pics. soon, just bought a 454 TBI motor with 700R4 off of a 91 SS truck, converting it to carburator with Edelb. intake and carb. any one has pics. of 67-72 trucks with BBC 454, any trouble i might be through installation?
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Old 04-16-2007, 09:40 AM   #2
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Re: 91' 454 SS Motor for my 2WD Blazer

Don't know about the 2WD Blazer, but the 4WD can be a pain in the butt, especially the valve covers, HEI dizzy, and the headers.
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Old 04-16-2007, 10:10 AM   #3
70c10
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Re: 91' 454 SS Motor for my 2WD Blazer

Yukon Jack has done it and his looks great!
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Old 04-16-2007, 04:40 PM   #4
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Re: 91' 454 SS Motor for my 2WD Blazer

will I still have clearance issue if I use the short valve covers and not the tall ones? what about motor mounts is there any special motor mounts I'll be able to use if so, where can I buy them? if not, do I have to make or weld my own motor mounts? what will be the best set up to convert TBI to Carb. do I need to replace the tbi Intake too? can I use an stock carburator (new) or both has to be replace with a big name like Edl. or Hlly. if so, what part No. is for intake and carb, from edel.
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Old 04-16-2007, 05:18 PM   #5
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Re: 91' 454 SS Motor for my 2WD Blazer

No experience with the 2wd Blazers to know if they put the motor in the same location. In relation to the intake - what heads are on the motor? If they are peanut port heads, Weiand is the only company I know of that makes an intake that is designed for the peanut port heads.

Get a couple pics of where your engine crossmember is located and that will help know if it is in the same location as the 4wd motors.
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Old 04-16-2007, 07:39 PM   #6
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Re: 91' 454 SS Motor for my 2WD Blazer

Look on the parts board there were some BB truck mounts on there. They will work. On a 2wd Blazer the BB will set in the same position as the small block. On a 4x4 the engine sets back toward the fire wall to connect with the trans and transfer case. On 2 wheel drive the engine sets away from the fire wall. When you look at a 2 wheel you will notice the fan shroud is shorter than a 4wd becaues the engine is set back on a 4wd. When you mount the BB in the 2wd position you won't have firewall clearance problems like the ones people have installing a BB in a 4wd. One thing I forgot is the water pump and belt set up on late model BB. I don't remember if it has short or long water pump. You may have clearance problems with radiator with the late model set up if it has long pump. The factory BB set up used a short water pump when used in the 2wd position. You may have to move the engine back to 4wd position to clear long pump to avoid radiator clearance problems. I sure some one on the board has made a late model swap and will be more help.

Last edited by Big Block; 04-17-2007 at 09:57 AM.
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Old 04-17-2007, 02:19 AM   #7
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Re: 91' 454 SS Motor for my 2WD Blazer

thanx to all of you, for your info. and your time, about the peanut port heads, are they the oval ports?.,
from what i know, my motor has the oval ports, sorry for my ingnorence !
I will try Weiand for my the intake, by the way a local hotroder guy from O.C CA said that i dont need to replace the intake to convert it to carb. from TBI anyone here has done it?
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Old 04-17-2007, 03:47 AM   #8
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Re: 91' 454 SS Motor for my 2WD Blazer

here are some pics. for you to enjoy, a pic says more than a word !
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Old 04-17-2007, 10:28 AM   #9
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Re: 91' 454 SS Motor for my 2WD Blazer

Get a post going in the Engine/Drivetrain section to see if that motor would have the peanut ports. They did in 1989 but I'm pretty sure I read that they went to a different head later on. Someone on ChevyTalk in the performance section will also know for sure.
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Old 04-17-2007, 11:33 AM   #10
NTR72GMC
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Re: 91' 454 SS Motor for my 2WD Blazer

I love that color. Do you have any more pics of the interior.
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Old 04-17-2007, 02:49 PM   #11
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Re: 91' 454 SS Motor for my 2WD Blazer

sure, will be late tonight from home office, Im at the buss. office. dont have them here. interior is from 05 tahoe I dont have quarter panels yet, or carpet.

Last edited by gus; 04-17-2007 at 02:51 PM. Reason: more info.
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