mcbrat Posted July 19, 2005 Share Posted July 19, 2005 http://www.ultimatesubaru.org/80s/mick/gallery/holley1.jpg http://www.ultimatesubaru.org/80s/mick/gallery/holley2.jpg http://www.ultimatesubaru.org/80s/mick/gallery/holley3.jpg http://www.ultimatesubaru.org/80s/mick/gallery/holley4.jpg http://www.ultimatesubaru.org/80s/mick/gallery/holley5.jpg I ran this set-up at WCSS7, without any problems.... (I had a snorkle set-up on it though...) Link to comment Share on other sites More sharing options...
soobmater Posted July 19, 2005 Share Posted July 19, 2005 i seen that huge carb and just about craped my pants. it looks awsum! p.s. im gona have to get some stickers off of you mcbrat. i'll pm you in a week or so with wich ones i want. Link to comment Share on other sites More sharing options...
oddcomp Posted July 19, 2005 Share Posted July 19, 2005 i have always suspected that a properly jetted 390 cfm holley would work well did you mess with the secondary springs at all ?? Link to comment Share on other sites More sharing options...
NorthWet Posted July 19, 2005 Share Posted July 19, 2005 i have always suspected that a properly jetted 390 cfm holley would work well did you mess with the secondary springs at all ?? I had a 390CFM on my 510, mounted to a nice dual-plane manifold. It lasted about 4-5 years before the engine vibrated it to pieces. (A primary Aux-Venturi rattled completely out of it!) That, and it ate the reverse power valves that Holey fits to the 390s. While it lasted it was pretty nice. Good response, good economy, good power, and a REALLY nice sound when the vac secondaries opened! Much nicer than the dual Weber 40DCOEs. What is the CFM rating on that Holley? Is it a 390, or a 500/650 CFM? Link to comment Share on other sites More sharing options...
GLCraig Posted July 19, 2005 Share Posted July 19, 2005 When I talked to McBrat at the show he said it was a 600cfm with off the shelf jetting and he had to tweek with the idle. The engine also has a Delta cam and EA71 pistons too. Then again I may have been just hearing things. Link to comment Share on other sites More sharing options...
mcbrat Posted July 21, 2005 Author Share Posted July 21, 2005 Craig, that's right. it is a 600 CFM and I had to adjust the idle speed (controlled by the secondary throttle plate). it's a Holley 4160, so it just has a plate for the secondaries,so no jets you can swap out. Secondaries are vacuum operated, and it's got a manual choke. I was flogging it pretty good in the gravel pit at WCSS7. with a considerably heavier than stock Brat and 27" tires, it pulls like it was on stock tires (pulls better I think) In sept. I'll be hitting some hill climbs that will really show me the benefit of the cam.... I have to drive it a little differently than my other soobs, that's for sure... can't stomp it down right off idle. gotta be a little lighter with the foot right at first, but otherwise, it runs great... Link to comment Share on other sites More sharing options...
northguy Posted July 21, 2005 Share Posted July 21, 2005 It did, indeed, perform well at the show. Link to comment Share on other sites More sharing options...
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