283 building questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1967k30 · 10-30-2005, 08:53 PM

How much power can you get out of a 283? What type of carb setup?A 2bbl, 4bbl,3 2bbls

.It will be in a 67' 4x4 with 37" or 38" tires and will be backed by an nv4500 5spd.Was thinking it may be pretty efficient and be built to have a good ammount of power.Planning on running propane aw well.Any info would be appreciated.

68Stepbed · 10-30-2005, 09:07 PM

I was thinking of building mine with a 305 TPI setup and Vortec heads. I'm not sure about power numbers. Sounds like you'll have a decent running truck there. Do you plan to run a low gear like a 4.11 or 4.56? I know smaller engines like lower gears. Good Luck and keep us updated.

1967k30 · 10-30-2005, 09:25 PM

It's going to be for my little brothers truck. It's going to have 5.14's unless we decide they are too low then we will run 4.56's.We have both sets of gears so it's no big deal.I was hoping to get him some good power an well as be efficient.Plus not very many people have 283's.

**special-K** · 10-30-2005, 09:34 PM

I`d go with an RV cam,low-end torque/economical cruising,hei,1.94"heads,4bbl(no more than 600cfm),headers,and flex-fan.If you`re doing a rebuild,you could go to about 9.5:1-10:1,an over-bore(to a 301),balancing,and porting(along with port-matching heads/manifold).

1967k30 · 10-30-2005, 09:43 PM

Any idea how much HP?? Could it make 300hp and still be efficient.

bigjimzlll · 10-30-2005, 11:49 PM

Quote:

Originally Posted by 1967k30

Any idea how much HP?? Could it make 300hp and still be efficient.

A real 300 HP will be real tuff. GM back in the day made 290HP with a 11-1 solid cammed dual 4 barrel 283

10-30-2005, 08:53 PM	#1
1967k30 Senior Member Join Date: Sep 2005 Location: NE Posts: 363	283 building questions How much power can you get out of a 283? What type of carb setup?A 2bbl, 4bbl,3 2bbls .It will be in a 67' 4x4 with 37" or 38" tires and will be backed by an nv4500 5spd.Was thinking it may be pretty efficient and be built to have a good ammount of power.Planning on running propane aw well.Any info would be appreciated. __________________ 01 2500 Duramax,6spd,4x4,Not stock. Estimated 550rwhp/1100rwfp on fuel only. 03 3500 Duramax,6spd,4x4,Pac-Brake,not stock Estimated 500rwhp/1000rwfp fuel only 67 K10 in many pieces Little Brothers truck 67 K20 Cummins 12V/NV4500/205, D60/Eaton w/ Detroit,37" Xterrains,crossover steering, Future plans,Twins and lots of fuel.

10-30-2005, 09:07 PM	#2
68Stepbed Registered User Join Date: Mar 2005 Location: 10-Uh-See Posts: 5,609	Re: 283 building questions I was thinking of building mine with a 305 TPI setup and Vortec heads. I'm not sure about power numbers. Sounds like you'll have a decent running truck there. Do you plan to run a low gear like a 4.11 or 4.56? I know smaller engines like lower gears. Good Luck and keep us updated. __________________ Matt 68 C10 stepside, LS1/700R4, TCI Engineering suspension system

10-30-2005, 09:25 PM	#3
1967k30 Senior Member Join Date: Sep 2005 Location: NE Posts: 363	Re: 283 building questions It's going to be for my little brothers truck. It's going to have 5.14's unless we decide they are too low then we will run 4.56's.We have both sets of gears so it's no big deal.I was hoping to get him some good power an well as be efficient.Plus not very many people have 283's. __________________ 01 2500 Duramax,6spd,4x4,Not stock. Estimated 550rwhp/1100rwfp on fuel only. 03 3500 Duramax,6spd,4x4,Pac-Brake,not stock Estimated 500rwhp/1000rwfp fuel only 67 K10 in many pieces Little Brothers truck 67 K20 Cummins 12V/NV4500/205, D60/Eaton w/ Detroit,37" Xterrains,crossover steering, Future plans,Twins and lots of fuel.

10-30-2005, 09:34 PM	#4
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: 283 building questions I`d go with an RV cam,low-end torque/economical cruising,hei,1.94"heads,4bbl(no more than 600cfm),headers,and flex-fan.If you`re doing a rebuild,you could go to about 9.5:1-10:1,an over-bore(to a 301),balancing,and porting(along with port-matching heads/manifold). __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

10-30-2005, 09:43 PM	#5
1967k30 Senior Member Join Date: Sep 2005 Location: NE Posts: 363	Re: 283 building questions Any idea how much HP?? Could it make 300hp and still be efficient. __________________ 01 2500 Duramax,6spd,4x4,Not stock. Estimated 550rwhp/1100rwfp on fuel only. 03 3500 Duramax,6spd,4x4,Pac-Brake,not stock Estimated 500rwhp/1000rwfp fuel only 67 K10 in many pieces Little Brothers truck 67 K20 Cummins 12V/NV4500/205, D60/Eaton w/ Detroit,37" Xterrains,crossover steering, Future plans,Twins and lots of fuel.



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