Well The new cam and changing back to my 4 barrel fron the 3 deuces made a big change in my engine. Here are some pictures of it finally finished.
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Well The new cam and changing back to my 4 barrel fron the 3 deuces made a big change in my engine. Here are some pictures of it finally finished.
Looks great, It would be nice if you could specify what you have used in your build-up.
Only on more Hp and you would have a 305" with 305 Hp..hehe..
305 bored .060 over to 315. Stock heads but ported. Comp cam Dur. .050 218-224. Edelbrock intake with 600 carb. Sanderson headers, electric fan,350 tranny. MSD dist. and coil, flat top pistons, 4" supertrap mufflers.
It's all in the combination and Chevy 37 has found the combination.
Very interesting. It is fun to see that you are using stock 305" heads. Almost all other build-ups posted on the internet uses new (expensive!) cylinder heads.
Nice engine. Our those hp numbers at the wheels. If so very impressive for ported stock heads.
later Dennis
No I wish the numbers were at the wheel. The 304 is from the crank.
Still a real stout number.
later dennis
ahhhh you wasted your money 305s are junk im sure you already know that but hey just thought id remind ya>>>350<<<most of the same stuff probably would have put out 350 Hp
And u autocity wasted ur breath on rudeness and negativity,I would sure rather build a 305 ,than run my mouth:eek: ,with the gas the way it is u will see more 305s,and yes i got 1 too!!
Nice 305 there and 304 is alot more power than most mustangs ,camaros and firebirds and u are approching 60s muscle car horse power!!My 305 below!!
I bought a 84 Chevy pickup today and it has the 305. All I hear is they are crappy for trying to make HP and all and I know people will tell me to tear it out and put in a 350. I dont care, I am going to put headers, exhaust, manifold, cam, etc and leave it. A bit better on gas, plus it's another everyday driver for me and my dad and the truck is a long bed so it isn't some drag racing truck. See I don't get it, I hate when I go places and people are like "oh why do you have a 302 in your Ford, kind of small for a truck, you need a big block". First thing I think is.. do you have the money to buy me one? Second, do you have gas money for me... no wait all the gas stations here dont even have gas right now so wont be doing me any good. Thirdly, do you want to build me some race track and have me race?
Sometimes I think that a lot of people dont know the whole point to hot rodding or dont even know what it is. It's not all about HP.
Ok well anyways, those motors both in those pics are really nice and I think that is cool with the approach you guys are using with them. Something different and you guys dont care what others think, to me that's awsome.
Oh yeah can you get some more pics of your moter Chevy 37? How long do you think a well maintained 305 can last for. The truck we bought has 113,000 original miles and has not been driven hard and oil changed when supposed to as well.
there is absolutly nothing wrong with a 305. the black coupe on my web page has a stock 305 with only a cam and a good street tune. with the 200 and 4:11's it will blow the tires off anyway. gets good millage and is a blast to drive. i'll buy those "junk" 305's any day.
Well I just looked up the HP and Torque numbers for my 305 and the TBI one which is the one I have has 170HP and 260 ft pounds of torque. Now I wonder what will happen if I put in a cam, do a little bit of head work, exhaust, headers, manifold, TBI work? All the rest of the 2bbl, etc 305's had 130 hp and some had 150 the CA ones. I do plan to build the motor up a bit and then make it look nice but most of all the truck will handle good through turns, etc I am hoping after we get it lowered, sway bars, new wheels and tires instead of the stock ones.
it's only a 1/4 in smaller bore. usualy those who rant about how sorry they are dont have any idea what they are. just repeating stories. it's all the smog junk that hurt them.
yep, like I said before, dollar for dollar a 350 will make more power....but that doesnt mean you cant make a 305 be a stout performer if done right.my 86 Elcamino ran 13.70s with a mild 305 & 3.08 gears
With my 305 I went to a show 35 miles away and even though I burn 93 octane, I get 21 miles to a gallon which Is about 10 more than I get withmy 2000 Dodge Dakota with the 4.7 engine. Nothing wrong with a 350 we all know its a great engine, but I got the 305 with the vehicle and it works great and yeo I have put alot of money into it, but it was woth it.
Well lets disect the 350 an the 305
350 Crank 3.48 stroke mains 2.45 rods 2.10 Bore 4.000
305 Crank 3.48 stroke mains 2.45 rods 2.10 Bore 3.740
Rods 5.7 long with a 2.10 pin hmm same exact rod
Crank is the same an the rods the same so y not just came it up an get some aluminum corvette 350 58cc heads an slap em on there an see what happens.
305 with 210k on it an going strong.
I will post some dyno graphs of the 305 engine that i am got put together an now adding a t4 turbocharger to it.
So to all the 305 engine hang on to them. They are fuel efficient
FMhellraiser Here I'll post some more pictures of my 305. As far as how long your 305 will last thats up to the owner. Over 100,000 miles I would say your engine might(and I say might) be do for some new parts. Heck I had 85,000 miles on my 305 before i bored it .060 over which is alot for that engine, but I've never had any heating problems and even though I don't run a mechanical fan because of space limitiations, the 2 electric pusher fans I have mounted on the front never come on unless I'm sitting for long periods of time.
Cad, I used the L-98 vette aluminum heads on my 305
Well guess I will just have to wait and see how much longer it lasts. I also understand that this 305 of mine (since it;s an 84) has I think 8:1 compression which is horrible from the things I have read. Dave on CHR here told me to buy new 350 heads and shave them. But what about if I wait when I rebuild this motor and just get new rods, pistons, etc and change the compression by different pistons? What would you do about this? I am thinking to run 9.5:1 compression?
I will keep the 305 though, no need in changing it when nothing is wrong with the thing.
To increase compression ratio, there are different ways of doing so.
1.You can mill the deck which will put the pistons closer to the deck, reducing the clearence volume, or you can mill the heads, which reduces the chamber volume which will increse your compression.
2.If you use dome pistons with no other change you can increase your compression ratio.
3.Head gasket thickness will increse or decrease your compression using thinner or thicker gasgets.
There are different formulas for working out what you want in compression ratio, but I don't have any of them available. Maybe other can help you .
Thanks Chevy 37. The only thing that would be hard for me to do since I am bad at math and all is learning how to figure out what compression I will get and learn how to buy what pistons, gaskets, heads, etc to get what compression I want. Hard to explain but I think you will know what I mean.
FMX, I use the compression ratio calculator thats at www.campbellenterprises.com/pistons.htm It tells you your cubic inches, your compression ratio, plus will tell you how much HP you need in order to turn a certain 1/4 mile ET.... Check it out.... hope this helps.....Quote:
Originally posted by FMXhellraiser
Thanks Chevy 37. The only thing that would be hard for me to do since I am bad at math and all is learning how to figure out what compression I will get and learn how to buy what pistons, gaskets, heads, etc to get what compression I want. Hard to explain but I think you will know what I mean.
I use to have a 305 that was mildly built in my '84 Camaro, plus it had Nitrous on it. It ran good..... In fact I now have a '94 Firebird with a 350 & YOU have 19 MORE HP than I do!!! Billl
Thanks for the site man. I can't use it yet because I dont know the thickness of the stock gaskets or the CC's in the heads and the other ones. All I know is the bore is 3.740 and stroke is 3.48. lol
I'm not a chevy guy but if you have a 305 build it. I built a 302 ford that puts out 289 rwhp and 298 rwtq (all motor) at the last dyno time. Since then I changed carb and picked up .15 in the 1/8 mile. so I'm confident that that little 302 is doing 300 rwhp now. Moral of the story build what you have and don't let anyone f??K with your good time. Everyone (ford guys) keep telling me to build a 347. I've got three kids a mortgage and two ex wives. I can barely afford and extra pop at the end of the month. The 305's bore is a little small but hp is all about the Heads, cam, intake. JMO. enjoy.
later
Dennis kelley
Good point. I have a 302 in a F100 and everyone wonders why I dont put a big block in a big heavy truck. Well I am only 18, no job right now, going to college... No money. The 302 runs strong enough and not like I need a big block with heaps of power. I wont go down the street with the pedal to the floor racing every second... Waste of gas.
Well I'm new to web forums like this so go easy on me if I screw this post up.
Just throwing in my 2 cents on 305's great engines, alot has already been said, but biggest limitations on the TBI version in the caprices is the runners in the heads and the exhaust manifolds.
Stock LT-1 exhaust manifolds, Camshaft, and Valve springs/retainers are supposed to give a nice boost to a TBI 305. Nearing Impala SS performance but with a couple extra mpg.
My 1992 caprice has a 305/700r4/2.56:1. Modifications are a K&N air filter, synthetic oil, bosch platinum plugs (cured misfire above 4300 rpm), 1/4'' injector spacer, 40 series flowmaster, 16'' electric cooling fan and a resonatorless tail pipe.
Haven't had it to the strip since the plugs and injector spacer but it's best time is a 17.4 @ 80.9mph. Sure it's not the quickest or fastest but it weighs 4200 pounds before you put 200 pounds of me in it.
The best part is the 23 or so mpg it gets in the city and regularly 28-29 on the highway, occasionally low 30mpg.
I'm actually working on getting a 305/700r4 out of an '86 caprice to put into my 82 "El caprice" (4 door turned into a 2 door truck with 4 inch chop)
The "El Caprice" now has a '73 Olds 350 with 210,000 miles in this car and lord knows how many miles it had on it when it was put in (junk yard engine installed in '84). has a worn out 700r4 behind it. Single digit fuel economy in the city, needs rebored.
Just for the sake of mention, I also have an '85 caprice in the middle of a frame off "resto mod" so to speak. Body should be back on Saturday. It's getting a 1976 cadillac 500/700r4. Read of similiar combos getting mid to high teen mpg, IF you can keep your foot out of it... Fuel economy is not what this car will be about.
Welcome to CHR. Looks like the El Caprice is a big project.
Nothing wrong with a 305. Got one in my 78 firebird and it'll scoot. Not as strong as what you've got...
mine is .060 over, stock heads, dual-angle grind, Comp cam with .454 int/ex, 290 duration, HEI, and (get this) two barrel intake and carb. It gets 18 MPG @ 80 MPH, and is exremely reliable. I had a 2.56 rear end with clutch limited slip, but it wore the tires too badly ( daily driver ) so I swapped it for a 2.41 open rear diff. @ 65 MPH I can drop it into second with no fear, and grab a car length before the other guy knows what hit him. Got a 350 turbo trans with a stiff shift kit, it'll gain a car length when it shifts from first to second.
The wife had a 318 in her 86 dodge diplomat, with similar build, but the 305 in the 'bird would smoke it everytime.:3dSMILE:
So good to hear positive things about the 305. I swapped a 305 into an 89 Astro, but I haven't got the bugs out of the setup yet. That's been frustrating, to say the least, and right now I need to walk away from it for awhile.
Your all right in saying there's nothing wrong with a 305. Not as strong in the bottom end as the 350, but they can be made to scoot.:D
Would it be cheaper for me to build a 350 and just put that in there or just rebuild this 305 with a better crank, pistons, basically the whole engine? What is the most you can bore one out to and still be completely safe without worrying about thin walls or heating issues?
You will have time and a lot of money into somthing that a stock 350 would make. to answer about the boring of cilynders, I think .060 is as big as they can saftly go, I may be wrong on that tho.Quote:
Originally posted by FMXhellraiser
Would it be cheaper for me to build a 350 and just put that in there or just rebuild this 305 with a better crank, pistons, basically the whole engine? What is the most you can bore one out to and still be completely safe without worrying about thin walls or heating issues?
You don't want to go more than .060 and even then the walls will be pretty thin. I bored mine that amount and had no problems with heating, but I've heard others saying they have. I kept and built my 305 because thats what I had. To be honest with you and even though this engine hasn't given me to many problems, I would go with a 350 or 383 on my next engine.
I've always bore mine to .060, and lots of guys like to pop a gasket when they hear it. Never had a problem, even when I lost the fan belt, and it ran hot enough to melt the sending unit for the temperature guage! ( did crack the head though )
I hear you can punch them .090, but I wouldn't.
The only problem I have with mine as far as temperatures are when I'm waiting in line for awhile. Since I don't run a mechanical fan because of clearence issues, I run two push electrick fans in front that I've set at 200 degrees to go on. Cruising I have no problem as my gauge stays at 180 all the time.
I've heard of people who have bored .080 over but .090 you wouldn't have any cylinder wall left and you would have to sleeve it. To go to all that for extra cubes not worth it.
Hmm well if I get intake manifold and carb, etc from Edelbrock and I decide to build a 350 next then I can switch that straight over right? My dad keeps saying that if we rebuild he wants a 350 instead. He had a 305 in one of his cars which I think was the El Camino since he said he had the choice of a 305 or 307. He said the 305 was nice and ran strong and long but not good for power at all. If I start looking for a 350 block soon then what should I start looking for? Maybe that cheap plain stock GM crate one for like 2000? Or maybe it was 3000 I forget. Then get that and upgrade it. Or should I get a block and get better pistons, etc and still be able to build a motor from a block for about 3500? Oh and that doesn't include the carb, manifold and whatever else I can use off the 305 since I will have that too if this carb and manifold will switch over.
Thanks again and sorry to rob the thread. I figured I'd ask it while on the subject.
Oh and say I have a 1985 chevy truck and then I get a motor that is 35 years old or older (since if that is the case then no inspection but anything newer than 35 needs emmisions, etc inspection) then do I still need to get inspected or will they look at the motor being the year? Or what if I buy a block off something and the motor is completely different? See what I mean? I dont know all that law kind of stuff so wanted to ask.