305 Rebuild project

alright fellas first of all. Yes a 3-0-fried. Ok now that that is out of the way im building a 496 stroker but that wont be done for a couple years so i decided to have some fun with the 305 for around 1000 bones. Car is a 1979 Montecarlo. i need a professional opinion. 305ci, hooker headers with 1-5/8"x30"Primary Tubes and 3" collecters, 2 1/2" pipes dumped off under the front seat. No mufflers. Edelbrock performer dual plane intake mani topped with a with a edelbrock 650cfm four barrel. set of 350 58cc closed chamber heads 1.84 intake/1.50 exuast valves cast#14022601. Hasting Moly Rings , Federal Mogul flattop Hypereutectic Pistons, Clevite Rod Brgs, Clevite Main Brgs, Clevite Cam Brgs, Melling High Volume Oil Pump, Cloyes TRUE Roller Timing Components, Pioneer Frost Plugs, Crane Energizer Camshaft and Lifter Kit 278 Dur. .467 Lift 110 lobe sep.
will the combo be sufficient for some road play? am i going to run into any problems with thtis combo? is the cam too big? should i go with say around .450? Any help would be greattly appreciated! Thanks fellas!


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Dumping that under your seat is going to get annoying real fast, I'd atleast route it to infront of the rear tires. I'd also run the 264Mega cam from isky, its a great general purpose street cam. I'd port the heads if you can. Just do the best clean up job you can, no need to get crazy. the MV55 oil pumps are notorious for breaking, you may want to get a std. oil pump from a better supplier. The FM pistons will probably have too short of a compresion ht, again you need a diff supplier.

Oh, and a 350 would be a much better engine to invest your time/money in. But everyone has probably already told you that.

The $1K you just wasted on a 305 is half a set of killer heads for the BBC.

Bad move, IMHO. But to each his own...

like i said. im building a 496 so i dont need anyone telling me not to waste my money on a 305. this car is my daily driver and needs to be running untill im done with the BBC. and get your facts straight 2gs is NOT a GOOD set of BBC heads.

$2K will buy all the head you need for a 496, you might even get new for that kind of money.

But you also want to run around w/open headers under the seat, so I'm thinking this may point to a real lack of experience and judgement on several levels.

Good luck with that.

you can build a 350 for less than the 305, it has more resell value, make more power, and is pretty much better in every way.

hints why im asking engine questions on the forum huh? ya big hint there on the experience level. and 2 gs is not enough 4 gs will get you the big cheif heads that you need. there is also no problem with dumping your pipes under the seat. enough pipe to keep from burning up the pistons is enough pipe. period.

and no i cant build a 350 for 1000 bones. dont have the resources, contacts, etc. for it. if i had a 350 block then sure. why spend money on a 350 when i can fix the 305, then complete the 496 that will blow a 350's doors off up and down the strip.

the #14022601 heads are original 305 and 267 heads.

Big Chief heads are NOT what you want for a 496, check around and you will see there are MANY sufficient heads for $2K that will be a likely better match than BC's. They're a Pro Stock head w/an AS CAST intake port volume of 395cc and require a lot of work and more than $4K. The length of pipe after the collector (or pipes, headers, etc, in general) have nada to do w/burning pistons.

If the engine is tuned to not run lean, you can run open headers all day or until you get enough of the noise or enough tickets for you to have had enough.

yeah i know.. but def flow alil better than my 471513. If i could find some different ones for around the same dollar amount i would get them but thats the best bang for buck deal so far.

My opinion, that's too much cam. Shorten up the duration into the 220 or less range. 601's are good heads, 53cc actually, not 58. Have a good valve job done on them and you're all set.
I'd stay away from the high volume pump, I like the M55A, and use them in racing applications without all the breakage issues people claim. I'd look to go a little smaller on the headers and pipes too if I could.
650 might make for a slightly sluggish lower end, and it's more than a 305 needs and I'm not a big fan of edelbrock carbs. You might want to consider a holley 4412 500 CFM 2 barrel, they make for snappy response on these motors and are easy to work on.

loud as i want it down here be4 1980 has to have muffs to inspect but, i get it inspected

thx toast y no high volume oil pump? i was looking at part number EK1021B from northern auto. pistons marked at 8.84 comp.

The oil drainback isn't fast enough and you end up with lots of oil in your upper valve train, with a stock pan (Making that assumption here) you can run it dry and lose oil pressure.
That looks to be a decent price on the kit. You might want to talk to your local machine shop though, they might be able to put a kit together for less money. I know I can usually beat the prices of most mail order houses (you know the ones) using the suppliers that are available to most shops. That way you can probably have a wider choice of cams too.