Getting a big block ( accessories question)

[71gmcC15]

Like the title sayes Im getting a big block from a old grain truck for my 71 GMC. 366 tall deck low reving torque monster. Anyway I don't believe I'll be able to reuse the accessories on that grain truck in my 71. I was looking through old forum post and a guy got some adapters to be able to run 88-94 sep belt set up
I don't want to run serp set up. Dont see the real point. My question is could I use the adapters to instead run a serp set up but to run my old sbc accessory brackets and stuff. No power steering or ac. Just an alternater. But with plans to go to power steering at some point. A picture of said adapter brackets

[Ironangel]

If you have access to those accessory plates get them and use them. Your going to need a double pulley on the crank balancer to accommodate the future power steering pump. Otherwise, just use what you got for the alternator...Got any pics of your motor with alternator?

[71gmcC15]

Originally Posted by Ironangel

If you have access to those accessory plates get them and use them. Your going to need a double pulley on the crank balancer to accommodate the future power steering pump. Otherwise, just use what you got for the alternator...Got any pics of your motor with alternator?

Sound like my theory was correct. Since on a sbc them serp brackets are a bolt on swap it should allow to use non surp brackets. Not the best picture but the alt is on the driver side. Nothing. On passenger

[tutone]

I just got through sourcing basic pulleys for a sb for my camaro. I found that Chevrolet still has access to "some" of them. The obsolete ones were sourced from ebay motors. I hate to say it, but your best bet will be to find someone with the accessories you intend to put on there and then hope you can get the numbers. Bracketry and pulleys can be a real pain as Chevy changed every time they could.

[Ironangel]

The pic shows a small block, the 366 is a big block. With that understood, practically nothing on that small block will work on that 366. I'm not familiar with the old school 366 and 427 tall deck motors except that they are unique unto themselves such as motor mounts and stands as most were manual transmissions. Where and how you mount that beast is going to govern what and where you locate the alternator and power steering. I have a 427 (MK-4) block sitting on refabricated small block stands to hold that block forward enough to utilize a 6" tail housing 400 Turbo on the factory crossmember. I had to shorten the propeller driveshaft 1" instead of 3". The alternator is mounted off the water pump on the right side with the power steering pump on the left, each has their dedicated crank pulley. Those tall deck truck motors have a unique water pump that may or may not have the provisions for those accessories like the MK4 blocks...If your committed to using that 366 then I'd use as much of the brackets and accessories designed for that motor. A 454 would be so much easier and run circles around that 366..."Jus sayin" PS. When I said use what you got, I meant with the 366. They are indeed torque monsters intended for grain trucks and trash trucks and the like. They're low revving behemoths that like alot of gearing and even more gasoline...

[MARKDTN]

I would do some research on using a tall deck. I believe you will have exhaust issues but not certain. You have to use a tall deck distributor which limits your choices, but I believe there is an HEI for that. Seems like the thermostat housing is also unusual on a tall deck. As far as mounts and bellhousing all that is "regular" big block so not that big a deal-same as a usual BB swap. I agree with using the big truck accessories if all you need is an alternator and p/s pump.

[71gmcC15]

Originally Posted by Ironangel

The pic shows a small block, the 366 is a big block. With that understood, practically nothing on that small block will work on that 366. I'm not familiar with the old school 366 and 427 tall deck motors except that they are unique unto themselves such as motor mounts and stands as most were manual transmissions. Where and how you mount that beast is going to govern what and where you locate the alternator and power steering. I have a 427 (MK-4) block sitting on refabricated small block stands to hold that block forward enough to utilize a 6" tail housing 400 Turbo on the factory crossmember. I had to shorten the propeller driveshaft 1" instead of 3". The alternator is mounted off the water pump on the right side with the power steering pump on the left, each has their dedicated crank pulley. Those tall deck truck motors have a unique water pump that may or may not have the provisions for those accessories like the MK4 blocks...If your committed to using that 366 then I'd use as much of the brackets and accessories designed for that motor. A 454 would be so much easier and run circles around that 366..."Jus sayin" PS. When I said use what you got, I meant with the 366. They are indeed torque monsters intended for grain trucks and trash trucks and the like. They're low revving behemoths that like alot of gearing and even more gasoline...

Ok I understand you loud and clear. I don't have. Picture of the 366 at the moment. But yes a 454 or really any other big block would be better. But also cost more. I'm going dirt cheap on this. Can always swap later. I'm definitely going to try to use the brackets the motor has. I have a 4 speed Muncie so it's going. To be ready slow but get your to 50 really fast. Lol.

[71gmcC15]

Originally Posted by MARKDTN

I would do some research on using a tall deck. I believe you will have exhaust issues but not certain. You have to use a tall deck distributor which limits your choices, but I believe there is an HEI for that. Seems like the thermostat housing is also unusual on a tall deck. As far as mounts and bellhousing all that is "regular" big block so not that big a deal-same as a usual BB swap. I agree with using the big truck accessories if all you need is an alternator and p/s pump.

I plann on using stock evey thing. Even the distributor. As fare as exhaust that will be something I look into. Hope stock manifold will work. I hope the stock accessory work. Just need options if they don't.

[Mike C]

That 366 will be a PITA. Tall deck motors in general are hard to work with. I had a killer tall-deck 427 .070 stroked to 496 with an 8-71 blower on it. I sold it because exhaust was going to be so expensive and built a low deck 427.

If you have to have it, try to get all the parts you can from the donor.

If you want get out cheap, keep the SBC.

[MARKDTN]

Originally Posted by 71gmcC15

Ok I understand you loud and clear. I don't have. Picture of the 366 at the moment. But yes a 454 or really any other big block would be better. But also cost more. I'm going dirt cheap on this. Can always swap later. I'm definitely going to try to use the brackets the motor has. I have a 4 speed Muncie so it's going. To be ready slow but get your to 50 really fast. Lol.

Not sure how good a 366 will be for this. It will be a pain to install. The heads flow horrible. Likely the big truck manifolds won't fit a C10. And you have all the other usual SB to BB swap items to do like stands and springs, maybe radiator. You are stuck with a tall deck intake or use spacers. The carb on it will have a governor so you will need a different Holley. Not sure the big truck clutch will clear a small truck bellhousing, but that could probably be worked out. I will freely admit, I am not a "big block guy". I would not do this at all. But if I did have to have a BB, I would find a SS454 truck engine and use the throttle body injection. If I didn't want injection I would put a carbureted intake on that-at least you would be back to a low deck block where exhaust is easier and a 350 distributor interchanges. A 366 has 360 ft-lbs at 4000 rpm. For example, my '91 Corvette TPI 350 has 350 ft-lbs at 3200 rpm. Again if you don't like fuel injection 350 ftlbs from a carbureted 350 is not that hard with a cam and intake. You already have a 350 so the swap will be so much easier. If it were me, I would stay small block and spend your money on upgrades. If I just had to have a BB I would find a 454, I would not waste time on a 366. 25 years ago I would have parted it out because the crank is the same as a 427 but I toted a really nice one (std-std, forged, nitrided, etc) to swap meets for like 5 years and finally gave it away for $75. Keep looking, cheap BB stuff that will fit is out there if you look. My .02

[71gmcC15]

Originally Posted by MARKDTN

Not sure how good a 366 will be for this. It will be a pain to install. The heads flow horrible. Likely the big truck manifolds won't fit a C10. And you have all the other usual SB to BB swap items to do like stands and springs, maybe radiator. You are stuck with a tall deck intake or use spacers. The carb on it will have a governor so you will need a different Holley. Not sure the big truck clutch will clear a small truck bellhousing, but that could probably be worked out. I will freely admit, I am not a "big block guy". I would not do this at all. But if I did have to have a BB, I would find a SS454 truck engine and use the throttle body injection. If I didn't want injection I would put a carbureted intake on that-at least you would be back to a low deck block where exhaust is easier and a 350 distributor interchanges. A 366 has 360 ft-lbs at 4000 rpm. For example, my '91 Corvette TPI 350 has 350 ft-lbs at 3200 rpm. Again if you don't like fuel injection 350 ftlbs from a carbureted 350 is not that hard with a cam and intake. You already have a 350 so the swap will be so much easier. If it were me, I would stay small block and spend your money on upgrades. If I just had to have a BB I would find a 454, I would not waste time on a 366. 25 years ago I would have parted it out because the crank is the same as a 427 but I toted a really nice one (std-std, forged, nitrided, etc) to swap meets for like 5 years and finally gave it away for $75. Keep looking, cheap BB stuff that will fit is out there if you look. My .02

I don't have a 350 that's the mighty 307 with 350 valve covers. I just built a 350 for my 81 k10. Want something different for this. I don't plan on changing the inake or carb or anything of it. I'm going. To leave as much as I can original. The governor is thare for a reason because rpms= boom. I have a theory on the exhaust. Regular bb mounts move the motor up a bit for exhaust to frame clearance right? Well the tall deck already moved the exhaust up so when you combine the to you run it to it being to hight. So in theory if I keep my sb. Mounts the exhaust should be ok idk just a theory. As for using the big truck manifold we will see might cleaner might not if not thare are other style manifolds out thare that might work. Or can always pont them straight up.lol. as for the bell houseing I should be able to use my current set up I believe.