gerg 10,871 Posted February 12, 2015 No harder or easier than a mechanical one, it's 4 bolts, throttle linkage, fuel hose(s), choke wire or cable. The vacuum setup is all part of the carby and comes with it. 1 Trent250 reacted to this Share this post Link to post Share on other sites
Trent250 21 Posted February 14, 2015 No harder or easier than a mechanical one, it's 4 bolts, throttle linkage, fuel hose(s), choke wire or cable. The vacuum setup is all part of the carby and comes with it.Ok sweet... Could anyone put up a link of a holley 600vac carb up that will bolt on?I've been looking around and have noticed there are a few different designs.. Would be great..thanks.. I've got an Aussie speed 4brl manifold.. Or what carb would you recommend? And what's the difference between spread bore and square bore? Which one will fit? Share this post Link to post Share on other sites
gerg 10,871 Posted February 15, 2015 Never owned one but i believe aussie speeds are square bore. Generally, when something is described as "4-barrel" it's automatically assumed that they're referring to a square bore carby. "Square bore" = all barrels same (or close) in diameter and are on hole centres that when viewed from below, represent a square. "Spread bore" = 2 small primaries and 2 big secondaries. The centres for the primaries are further apart than the secondaries, so as to form a "spread" shape when viewed from below. Both are universal patterns (ie manufacturers all stick to the standard for either) but neither type is directly interchangeable for the other without an adaptor. The bolt patterns are different too. Best way to confirm the manifold is to ring aussie speed. 1 Trent250 reacted to this Share this post Link to post Share on other sites
Trent250 21 Posted February 15, 2015 Thanks for the pics mate, I see the difference now... Just messaged Aussie speed and it fits a square bore.. Cheers 1 gerg reacted to this Share this post Link to post Share on other sites
Trent250 21 Posted February 15, 2015 https://holley.com/products/fuel_systems/carburetors/classic_holley/ Which one would be for me? Share this post Link to post Share on other sites
gerg 10,871 Posted February 16, 2015 If you ask me, get the 390 or 465 If you ask anyone else on here, they'll tell you to get the 600 or 650 Share this post Link to post Share on other sites
slydog 7,873 Posted February 16, 2015 Annnnnnnnd a DP but only if it has over 10.5 comp and over 250 @ 50 duration camshaft...other wise you have to run em too rich to get decent response out of em and you kill plugs and wash the bores in fuel. Just saying 1 Trent250 reacted to this Share this post Link to post Share on other sites
Trent250 21 Posted February 17, 2015 Annnnnnnnd a DP but only if it has over 10.5 comp and over 250 @ 50 duration camshaft...other wise you have to run em too rich to get decent response out of em and you kill plugs and wash the bores in fuel. Just saying It's got 11:1 comp and a decent cam but I still think ill go with vac.. Share this post Link to post Share on other sites
slydog 7,873 Posted February 17, 2015 Decent isn't enough though...Vac will be better suited for your mild combo.Leave the DP's for the big boys Share this post Link to post Share on other sites
PRO250 1,506 Posted March 13, 2015 is that the engine out of that red Cortina? it was fitted to a fairlane? is the lane yours or you just hot the engine? Share this post Link to post Share on other sites
Trent250 21 Posted March 14, 2015 is that the engine out of that red Cortina? it was fitted to a fairlane? is the lane yours or you just hot the engine? I brought it off that dude who ownes that cortina, and the engines are very similar.. I own the fairlane.. The engine looks identical with the same rocker cover, but I have changed that now... Share this post Link to post Share on other sites
PRO250 1,506 Posted March 14, 2015 So its no the same engine? I thort he swaped the engine into the lane to sell it Share this post Link to post Share on other sites
Trent250 21 Posted March 15, 2015 So its no the same engine? I thort he swaped the engine into the lane to sell it Nah different motor, the one in my lane is matching numbers..The one in the corty was the first one he did with a Crossy and then did the lane one a bit better again.. Share this post Link to post Share on other sites
