I bought a 71 4dr Mav with a 302,for 300 bucks just to get the frame mounts,belly bar and throttle cable. I was gonna scrap the engine till I found out it is a Mex block. It came with a performer intake and a tired Holly carb. Im not fond of Holleys, I plan to run an Edelbrock, but I just cant resist the urge to rebuild this Holley and run it against the Edelbrock on the dyno when my car is ready. I have no idea what size year or model this Holley is. the only #s I can read are "List 1850-3" under that # is this #2577. Anybody know how to find out the size and model? Be nice I already know what it is....LOL
I tried that and got a holley forum, You have to join to post, Im a member of too many Forums, I cant keep track of one more. Thanks for the info Bro. BTW which Holley would you subgest for a 331 with big heads, big cam and intake? Im so interested in this I will buy another for this test. I like the Edelbrocks for the lack of fiddling, but they hesitate when you stomp on them.
Im looking into AFR 205s Vs 225s with iether a dual plane air gap or super vic intake. Solid roller cam for sure. Oh yeah I put an Edelbrock 750 on a 351 HO in an 84 Bronco I built 15 yrs ago( it had a holley when I brought the motor home, damn thing caught fire it leaked so much I threw it down the street after I put the fire out)I adjusted the Edelbrock with a dwell meter wher I lived near prescott az. Elevation 4250' above sea level. A guy here in yuma bought it from me 10 years ago, when I moved back down here,his daughters beat the crap out of it, draging a BIG camper trailor all over the sand dunes on weekends and the settings have not been touched for 15 years "Jet It ..Set It and forget it" ( Edelbrock advertising slogan). Motor still runs great I borrow the Bronco for hunting trips every year. When I sold it I got visitation rights. Im gonna put an 800 AVS on my 331. I just want to understand why the 2 companies design and aplications are so different after the dyno day meet and eat. If there is such a thing as a Magic Holly I want one for the weekends cause "You Drive an Edelbrock..But you Race a Holley". I worked in defence research years ago. My Mother always swore she would never buy me another toy because after playing with them for 2 days I took them apart.(Didnt Keep a Girlfriend in High School for more than 6 Months) Everone please dont get me in trouble for making a "Train Wreck" thread. I really am interested in learning and experiencing the technical differences of both aproaches.
Holleys are also "set it and forget it" I set up my 3x2's 8 years ago and haven't touched em, other than a rejet after I put spacers under em. Dead nuts reliable. The leaking Holleys ? They've got cork gaskets. Those type gaskets have been history for a long long time.
I have been a Holley guy all my life. I never have any trouble with them and they run forever without touching them. They are also very easy to tune and there are never any flat spots or hesitation once you get them dialed in. Nobody I know of personally uses edelbrocks carbs in professional racing but I could be wrong. There's got to be a reason for that. I think the main attraction for the edelbrocks is they've gotten a reputation for running pretty good right out of the box without any tuning. This is great for for guys who dont like to tune or who dont want to learn. The problem with that is if you don't tune it you could be leaving some performance on the table. In my own experiences I've never seen an engine with an edelbrock carb be as snappy as one with a Holley. Just my own observations over the years. And yea a 750 DP would probably run good on your engine without knowing much detail of the combination.
One of the things I don't particulary like about the edelbrocks is how you have to adjust the accelerator pump shot...you have to "bend the rod" to make adjustments...what the? On Holleys you use a feeler guage to make a definitive adjustment by adjusting clearance with an adjustment screw...then use the squirter nozzles to adjust volume from there. Haha Resto...I made it in bro
Dood tuning triple duces is beyond me at this point. But when I think about it that set up must give you alot of options for acceleration points during a run.
I like the tourque range on the 205s dont like the low end loss on the 225s but I think I can get around that.
those are some big flowing heads for a 302. especially if your considering a dual plane intake like the rpm. the super victor would the the matching intake, but its really tall and creates hood clearance problem. also a stock 302 bottom end really is not strong enough to to stay toghther at the required rpm level for those heads and intake (+6500rpm). the lower rpm levels will not have that much power or torque and wont be much fun on the street to drive. the afr 185s will be allot more fun on the street and will be able make 400+ hp with the right supporting parts. as for carbs (getting back on topic) im a holley guy. i have messed around with the edelbrocks allot. i started out being a carter afb guy (now the edelbrock carbs) because my automotive teacher said thats the one to use. i was constantly tweaking and tuning on it to try to get it to perform like my buddies holley equipped cars. finally i thew a 600 dp carb on and wow. that was the performance i had been trying to get out of the edelbrock. as for gas mileage, it was really close to the same. hard to say which got better because of driving style. as for holleys leaking, they have all new gasket materials now that not dry out and leak like they used to. you can reuse them now instead of having to replace them when you change jets or power valves. i do recommend edelbrock carbs to people who just want to cruise and are not concerned about full throttle performance. they really are a bolt it on and forget about it carb. it should never cause you a hassle unless you get dirt in it. run a good fuel filter. with the heads your looking at tell me your are concerned about your full throttle performance and thus you should get better results with a holley than an edelbrock.
if you are putting in good aftermarket rods then you dont have to worry about the bottom end not surviving high rpm power. the other trick to making high rpm power is cam, lifters, and valve springs. the cam is what truly controls your power band. the best way to build a motor is to decide what power you want and how you want to use that power. then get the parts that will meet your needs. just buying the big cylinder heads because it sounds cool to have big cylinder heads is the wrong way to approach building a motor. my favorite motors that i have built for street cars all have been low to midrange torque monsters. they will get the best mpg and will win most stop light races that non of us would ever do because its illegal. the high hp motors i have built are the funnest for drag racing and any racing but suck for street driving. so really consider what your objectives are before you spend big bucks on parts that you wont be happy with the results of.
Resto if you buy the Holley I will let you put it on my car and see what the difference is. What a nice guy I am right? We can put it on the dyno and and see what it does after a little tuning compared to what I can get out of my Edelbrock. I have always agreed that the car would be faster at the strip with a holley, but I like the simplicity of driving the Edelbrock. Plus the parts to tune a Holley really add up after getting an assortment of jets, squirters, accelerator pump cams, power valves, etc. Just seems like alot of parts to learn in my old age.
