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- Thread starter JunkyardMalibu
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Re: TUNNEL RAM ?
If you have them, run them.
You can always upgrade later if your not happy with it.
If you have them, run them.
You can always upgrade later if your not happy with it.
Re: TUNNEL RAM ?
I'd think dual 750's would be over kill, even 600's souls be set up using Progressive linkage, or it'll be tough to not foul the plugs cruising around town
I'd think dual 750's would be over kill, even 600's souls be set up using Progressive linkage, or it'll be tough to not foul the plugs cruising around town
Re: TUNNEL RAM ?
I searched other forums for answers and found that holley 660 center squirters are the way to go, they are made for tunnel ram setups. I also read that it's going to be a challenge to get them dialed in, should be fun!
I searched other forums for answers and found that holley 660 center squirters are the way to go, they are made for tunnel ram setups. I also read that it's going to be a challenge to get them dialed in, should be fun!
Re: TUNNEL RAM ?
You can use the 1850 600s. Hot Rod or Car Craft did an article about 18 months ago about tuning twins. I remember one of the biggest issues is to link the vac/sec pods to a common source so that they both act in unison. The next thing is equally leaning out the idle circuit calibration so the engine isnt getting pounded at idle and low engine speeds.I think this can be done with small wires in the idle feed restrictors. I got a 2x4 setup at a swapmeet a few years ago but I havent put it on yet.
You can use the 1850 600s. Hot Rod or Car Craft did an article about 18 months ago about tuning twins. I remember one of the biggest issues is to link the vac/sec pods to a common source so that they both act in unison. The next thing is equally leaning out the idle circuit calibration so the engine isnt getting pounded at idle and low engine speeds.I think this can be done with small wires in the idle feed restrictors. I got a 2x4 setup at a swapmeet a few years ago but I havent put it on yet.
Re: TUNNEL RAM ?
X2. 660 Center Squirters were specifcally designed for tunnel rams. It can still be VERY soft on bottom end. If you're going to spec a performance cam you'll need one with a lot of top end, which calls for a lot of gear. It won't be fun on the highway, but it'll help it to not be a dog around town. A lot of guys who care more about the tunnel ram "look" than the performance run a REALLy mild cam in order to use more reasonable gearing just to be able to get some drivability. Tunnel rams can be a pain for anything other than WOT drag racing.
Tommy
JunkyardMalibu said:
X2. 660 Center Squirters were specifcally designed for tunnel rams. It can still be VERY soft on bottom end. If you're going to spec a performance cam you'll need one with a lot of top end, which calls for a lot of gear. It won't be fun on the highway, but it'll help it to not be a dog around town. A lot of guys who care more about the tunnel ram "look" than the performance run a REALLy mild cam in order to use more reasonable gearing just to be able to get some drivability. Tunnel rams can be a pain for anything other than WOT drag racing.
Tommy
Re: TUNNEL RAM ?
I agree the center squirters are the tunnel ram carb. I wouldn't bother with 750's. I also agree that if you have vac secondaries, try them. They may help clean up the around town driving since it may not need the secondaries at cruise.
I agree the center squirters are the tunnel ram carb. I wouldn't bother with 750's. I also agree that if you have vac secondaries, try them. They may help clean up the around town driving since it may not need the secondaries at cruise.
Re: TUNNEL RAM ?
Ok, I'll give the carbs I have now a try. I didn't even think about the mechanical secondaries being too much for the street , but makes sense, it seems the vac sec would be a little more forgiving and easier to tune. Thank you for the great info. Going to call comp cams and see what the best cam choice would be to keep it semi-streetable
Ok, I'll give the carbs I have now a try. I didn't even think about the mechanical secondaries being too much for the street , but makes sense, it seems the vac sec would be a little more forgiving and easier to tune. Thank you for the great info. Going to call comp cams and see what the best cam choice would be to keep it semi-streetable
