Quote:
Originally Posted by James the III
The vortec 350 was rated at 255hp with the efi..
I think you are missing the point.. tho..
Most (including me) bought a crate 4 bolt vortec 350 because it was cheaper than rebuilding your old engine.. and got all new parts..
That said.. It is super easy to get 330-340 h/p out of it with the same mpg and oem smoothness..
The g.m. crate ramjet is not a rump rumpity engine.
and the vortec 350 is the base for that crate engine with a different cam and rockers.. and 330+ hp..
350 vortec crate 1919.00
ramjet cam 168.
1.6 rockers 200-250.oo
beehive springs .100.00
retainers 40.00
and now have 330-340 hp and not 225
and not for much money.. 500 bones gets you 100-115hp.. not a hard choice..
My local machine shop quoted me 2400.oo to rebuild my 350 before getting fancy with parts.. that was a stock rebuild and only if it didn't need parts (crank/rods/valves/head)
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Where did you get 225 hp from? My motor is putting out at least 300 hp so all you gained is about 30 hp not 115 hp. You can gain half of that just by swapping the intake rockers to 1.6 and not going into the motor at all.
To noisemachine, yes you have to run an electric fuel pump which can be noisy but I have a fix for the noise. I just wired heater fan resistor into the line and it slowed the pump down and now I can hardly hear it. I gutted an old voltage regulator, drilled it full of holes and installed the resistor inside then mounted it so my engine fan blows air across it. I'm running a long water pump but I don't see any reason why a short pump wouldn't work. The ramhorn manifolds will work but long tube headers will add some hp. You can also get some 2 1/2 inch ramhorns which will flow better than the factory ramhorns. Yes the stock brackets will work.
I'm running a 770 Holley Street Avenger. Some will tell you a 600 or 650 is as big as you should go but I already had a new 770 so it's what I used. It's a single pumper and vacuum secondary's so it works just fine.
01-03-2017, 08:53 PM
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