camden owners
Originally Posted by 64mgb
How big was the pulley you were using and how big is the pulley you're using now? I'm in the process of building up a 13B with a 5" Camden on it, and I've been worried that the small pulley on the supercharger would cause excessive boost and result in detonation.
Thanks,
Rich
Thanks,
Rich
Originally Posted by R Toy 7
I have the 5 inch camden with a pulley about the size of the snout of the charger. I did have some pre detonation probs when I had the Holley 390 on it but when I put the Holley 600 on probs went away. Also trying to get rid of problem went to direct fire on leading plugs. Now the thing just lifts front wheels and goes like ....... screaming wind.
My friend's setup looks like this. 5" early Camden (before Atkins) and the slant gears were replaced with straight-cut a few years ago by Dave Atkins. No problems since then. Also, it has an Edelbrock carb that seems to be tuned quite well because it has nice driveability and nice power. These pics were taken today at a rotary BBQ by various rotorheads. Don't look at the alt. It was a last minute replacement because the old one had an internal short, and he didn't have time to paint it. lol



It's at the far left.

Paint scheme of engine and car seem to match.
He also has a '77 REPU with an S5 T2 and a 7" Camden that we just got running last Saturday. It runs pretty well and he's trying to keep it out of boost. Heh. Anyway, before we did the engine swap, it had a 390 Holley which just didn't run right. Then he switched to a 600 which seems to have cured most if not all the problems. We only swaped engines because the old one suffered from low compression and missing chrome (it was a cheap rebuild he picked up for a couple hundred to replace a high-mileage GSL-SE engine that lost an apex seal).
I wonder if Atkins still recommends the 390 for even the 7"? The 600 seems more appropriate. I'm not sure what size Edlebrock he's got on the 5".



It's at the far left.
Paint scheme of engine and car seem to match.

I have the 5 inch camden with a pulley about the size of the snout of the charger. I did have some pre detonation probs when I had the Holley 390 on it but when I put the Holley 600 on probs went away. Also trying to get rid of problem went to direct fire on leading plugs. Now the thing just lifts front wheels and goes like ....... screaming wind.
I wonder if Atkins still recommends the 390 for even the 7"? The 600 seems more appropriate. I'm not sure what size Edlebrock he's got on the 5".
Last edited by Jeff20B; Aug 29, 2005 at 01:44 AM.
Originally Posted by Jeff20B
I wonder if Atkins still recommends the 390 for even the 7"? The 600 seems more appropriate. I'm not sure what size Edlebrock he's got on the 5".
Rich
Heh, yeah. I think orange might make a comeback. Actually, the digital camera couldn't image the redishness of the other two cars correctly in the the sunlight. I think one was red and the other was a redish orange. Only the really dark red seems to show up correctly.
Now that I think about it, my friend's carb on his 7" is a double pumper. It might be a 650.
Now that I think about it, my friend's carb on his 7" is a double pumper. It might be a 650.
Last edited by Jeff20B; Aug 29, 2005 at 11:48 AM.
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Joined: Apr 2003
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From: calgary
Gonna be do'in a test on mine this week. Ya see when I was running the #8 pulley I was getting 13lbs boost early but dropping to 10 after 6500 and the power curve levelled off on the dyno after 6500 as well. I went back to the #7 pulley (climbs to 10lbs after 6500) and the power up top is better. One friend suggested that at 13lbs I may be running out of carb. I had doubts (650 cfm) and another suggested exhaust wasn't flowing enough (rb streetport setup, minor doubts). One more felt the charger was generating too much heat and the bigger pulley (less boost) would be better (believed this one, Max is a very very credible source). Well, courtesy of a buddy, I am going to attempt to dispell the carb theory. I am rebuilding and gonna test a whopping 850 double pumper (just a test!!! I know it's big!) with the #8 pulley to see what more carb will or will not do. Next week I may dispell the exhaust theory by simply hooking a vaccuum guage to my exhaust and seeing how much back pressure I have under boost (another test suggested by Max). What exhaust are you guys using?? My buddy has 2 1/2" with a presilencer, mandrell bends and a little magnaflow......holy fu%&(ng loud!
whoever said earlier that you have to tune for H2O injection is wrong, you don't want to tune for it because if you run out of water, you're FUBAR. you'll loose some power, but it's worth the extra insurance. FD guys refuse to tune for water injection for this reason (and they drop a ton of cash into their engines)
Knocking up an old thread...
2nd FC
Starts off at 5 PSI and climbs to 8 PSI by 8000 RPM...should be around 190 RWHP at the moment.
I need to work on heat wrapping the headers, etc - just because people have recommended it on here.
2nd FC
Starts off at 5 PSI and climbs to 8 PSI by 8000 RPM...should be around 190 RWHP at the moment.
I need to work on heat wrapping the headers, etc - just because people have recommended it on here.
Tech, what # pulley are you running?
Camden's website has a picture of the supercharger working with a side draft, but where can I get ahold of the manifold piece to connect the charger to the carb? Also, how would I go about getting water/meth injection on the side draft? Would I still be able to put a spacer type injector in between the camden and the carb?
I'd really, really, really like to get a 7".
Camden's website has a picture of the supercharger working with a side draft, but where can I get ahold of the manifold piece to connect the charger to the carb? Also, how would I go about getting water/meth injection on the side draft? Would I still be able to put a spacer type injector in between the camden and the carb?
I'd really, really, really like to get a 7".
Last edited by clean85owner; Jan 30, 2006 at 01:02 AM.
Honestly I couldn't tell you, I had a smaller pulley (about the size of the snout) on there originally and it hesitates a lot throughout the RPM range, I can't figure out if it's from leaning out or what not...from 0-60 when it doesn't hesitate it's a freaking beast (note out running 350z's)...after that the hesiations I just let off.
Currently, it's got a bigger pulley on to slow it down according to Camden (as the previous one locked up, but I think it was related to other issues that we had).
Currently I'm on the stock ECU fidiling around - it's FI
*Edit - The hesitating pulley was the -7 it's too dark and cold to mess with my car right now *
*Double Edit - it's a -5 for the current pulley that doesnt have any hesitations *
Currently, it's got a bigger pulley on to slow it down according to Camden (as the previous one locked up, but I think it was related to other issues that we had).
Currently I'm on the stock ECU fidiling around - it's FI
*Edit - The hesitating pulley was the -7 it's too dark and cold to mess with my car right now *
*Double Edit - it's a -5 for the current pulley that doesnt have any hesitations *
Last edited by Tech_Greek; Jan 30, 2006 at 01:14 AM.
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