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    77 gmc k25 sbc to bbc swap questions.

    I have a 77 gmc k25 sierra grande with a 350. I wanted to know if i swap it for a big block, will it hit the ac housing and the brake booster? Or will i be able to just swap it with no clearance issues? I really want the lowend grunt of a big block but dont wanna mess with the booster and...
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    Chevy 357 horse power torque numbers

    Hey guys im buying a 357 sbc and the guy gave me this information on it. What hp, tq numbers do you think it will make? 357 cubic inch small block Chevy. It is .40 over Speed pro hypertech 9.5 to 1 compression flat top Pistons. 2.02 valves .504 cam lift, aluminum high rise intake manifold...
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    pro maxx sbc aluminum 200cc heads for my 350

    Hey everyone. I just purchased a set of pro maxx sbc 200cc aluminum heads from skip white performance. what kind of hp/tq numbers will i get from these? My 350 has the stock 77 smogger heads and an edelbrock performer intake with a holley 650 cfm carb. It has a comp cams rv cam not sure on...
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    h4 7" round headlight kit need help.

    Ok guys i got my new headlight kit from classic industries and it game with the dapper lighting kit. Im not sure how to set up the 3 prong male connector to plug into my headlight harness. I dont have my truck right now its in the shop but i just wanted to get it all figured out. Shouldnt there...
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    looking at buying a new 85 chevy/gmc k10 but the headlights are wrong.

    looking at buying a new 85 chevy/gmc k10 but the headlights are wrong. What would it take to swap them back to ghe original dual headlights?
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    1977 gmc k25 ignition cylinder siezed.

    Ok I my 77 k25, is stuck in the run position and I cant get it to the star position or the lock position. I have the new cylinder but the old one just wont come out. What do I do?
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    turn signals dont work but hazards do?

    Ok everyone I have another problem on my 77 gmc k25 sierra grande. My turn signals went out, and neither work. But my hazards work, I bought a new flasher for my fuse block, and that hasnt helped at all. Could someone give me something else to try that may be causing my problems?
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    what gears should I run in my 3/4 ton lifted gmc?

    Ok guys I just had the engine in my 77 lifted gmc rebuilt. Its a chevy 350 with about 375 hp. Im running 35" tires on a 6 inch lift. Front axle is a d44 and the rear is a corp 14 bolt ff. Im pretty sure that my rear gear is 3.73, but not sure. All I know is that the truck has a hard time...
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    chevy 350 brand new rebuilt motor weird noise !! HELP!!!!

    Hey guys I just had my motor is my 77gmc rebuilt. Well it runs great, but when I get on it and get up in rpms about 3k. It sounds like a rattle snake rattle but really fast. Almost like a sprinkler. Thats the best way to describe it. But its loud like it drowns out the exhaust. Im pretty...
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    How do i switch back to full time hubs from manual hubs??

    My 77 gmc has the full time np203 and the previous owner put manual hubs on it. I just want to put it back to how it was before. What would i need to do that?
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    brand new blower motor!!!

    Ok i bought a brand new blower motor from lmc truck. I got it in and it came on but it sounded like it was rubbing on something. so i pulled it back out, and checked it but couldnt see where so i put it back in and same thing happened. So i pulled it again!! And when i put it in this time. It...
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    350 wont start unless jumped and popping out of the carb ONLY at start up!

    Well another problem with my gmc. Well when i try to start it up for the first time of the day, it just cranks and cranks like it wants to turn over but it will crank till all i hear is a repeated clicking sound. And then when i put it on jumper cables it will start but only when i pump the...
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    new from michigan

    Hey everyone, i forgot to post up an intro before i started posting. Well my names kimber, i have a 1977 gmc grande sierra k25. It has a 6" rough country lift on 35/12.5/16.5 inch tires it has the original 350 4 bolt main but it has a mild "RV" cam. I took a video this morning. Here ya go...
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    1977 gmc grande sierra k25 350 th350 np203. front drive train clunk !!!help!!!

    Hey guys, i have a big problem. Today i started messing with my 4x4 on my 77 grande sierra. And when i went in reverse in 4hi it started making a loud metal clunking noise! I have the np203 t-case and i also have locking hubs. How do i know if the previous owner put in the part time kit...
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    Heater worked great now no air flow.

    HELP!!!! Heater worked great now no air flow.!!PICS up!!! Hey guys. I just bought a 77' gmc k2500 and the heat was working great and blowing out strong. Then i turned the truck off and when i turned it back on there was nothing. No heat and no airflow coming through anywhere. Could my...

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