hi,

i am 16 and i am a proud owner of 1984 camaro Z-28, and was wondering if some of you guys could give any suggestions because i took out the 305 and is ready to be rebuilt.I am going to try to make close to 400 hp like around 380 (with my uncles help on the rebuilding part!!) or so with out a 350 because i heard it could be done but there is consequences to this because of the 2 bolt main caps.And i was thinking of buying a set of race 2 bolt 350 mains from miloden with arp studs.IF a 350 & 305 share the same journal size and crank(except the 350's crank is stronger) why not give it a try,you know? Any help or suggestions would be greatly appreciated. by the way i am having the carb done a stage 2 by J.E.T and the car has a 5-sp,305 L-69 and from the factory 3.73 rear gear.What do you guys think about for paint job candy red fade with 2 1ft pearl white stripes with a cervini's ram air hood!!
Thanks for your time,

J.P.

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Getting that kind of HP from a 305 is a pretty tall order. We had a 86 Firebird with a 305 and Edelbrock Performer RPM everything that ran mid 13's. Somehow I always felt is was just a freak motor. You know the type where you screw and and get something right. Anyway, IMHO, if you gonna sink money into a motor, find a 350 and start from there. You will be much happier in the long run.

I would still like to build a 305 with a 400 crank though......... http://www.camaros.net/forum/wink.gif

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Mark
1992 Firebird 355/Six Speed
1991 RS 350 / 700-R4
1987 Toyota Pickup 383 / 500 + HP
**How fast is just a matter of how much $$$ **
"They only thing worse than drinking out of the toilet is driving a FORD."
"FORD, the other F-word"

I had bought my 84' Z from a friend, who had the L69 running 14.30's with 3.73. Not too shabby I guess...

It was a comp cams 268, with a performer manifold, and a Holley 650 vac sec, th350, 2800 converter, and a set of crappola "casler" headers.

Gettin 400hp from the '05, like Mark said will be kinda tough.....how fast do you want to go?

J.P., if you want that kind of hp you need to find you a 350. luckly you have the 84 Z28 . What I would do is find a 350 4 bolt main out of an older pickup. Build it right, Then you can get some real hp.

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Charles Taylor
89 Camaro
350 TBI

[This message has been edited by Charles (edited 09-18-2000).]

Big block dave,

He wants to go faster than money.

I have a 91 fireturd with the 305 TBI, its a pig, (or was) after some new parts, edlebrock TBI intake, new edlebrock TBI unit and fuel injectors, high flow converter, cat-back exhaust, low ratio pullies (I have a serpantine belt) NOS fogger and some headers it gives me about anywhere between 190-212 at the rear wheels. it I bang the bottle, I can up it another 125... thats off the stock crank and everything else... I was considering 1.6 or greater rocker arms for a little extra umph, but people tell me I will crunch my springs or smack a piston with a valve head.

I have heard of people "stroking" a 305, but WHY? Stroke a 350 to get a 383, stroke a 305 to get a what, 336?

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Chris's 67 RS can be seen at http://www.geocities.com/macphreak4evr/index.html
JOIN THE CAMARO NET WEBRING! www.geocities.com/macphreak4evr/webring/webringjoin.htm (http://www.geocities.com/macphreak4evr/webring/webringjoin.htm) !!!

Buzcarlos,
The "guys" aren't just "pulling your chain", It's going to be difficult pulling 300hp out of the little 305 let alone 375/400hp.
Your best bet is to find a 350 or 400 and start from there. Stroke the 350 out to a 383 or bore the 400 .030" to .040" over for either a 406 or 408.
It really is easier to start with more cubic inches than build power out of a small engine, and the "big engine" is more reliable . God luck with your project, keep the "gang " at CTF posted on the progression of your rebuild. pdq67

A couple things to keep in mind is there is no substitute for cubic inches and 350 parts are cheap. When you get into high power numbers that you want from a 305 you run into the small bore diameter problem that limits you on valve sizes. I don't think you can uses 2.02, 1.60 valves on a 305. With 350's so plentiful there is really no reason to waste time or money on a 305. Sorry but the 305 has absolutely no benefits over a 350 so there is no use to build one even if you already have one. Its easier and cheaper to do what you want to a 350

hey guys thanks for the info its becoming really helpful. Keep it coming.

Thanks again,

J.P.

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I own a 79 Camaro with a stock 305 and was looking to also hype up the enighe a little bit, but with what you guys were saying makes sense. I think I will head down to the junk yard and pick up a block and start haveing fun! I think a 350 stroker would be awsome, but, what else would I have to do to the car: rear end, gears, transmission to make it so it could take the hp. It is in ok shape cause my mom bought it brand new in 78' and I got it about 6 months ago. If you can help me out with that and if you know of anywhere where i can get some replacement parts: fenders, front end then let me know, thanks alot!

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I have to go- suff to do!

hey guys, to day one of my buddys showed me an article of CAR CRAFT where they were testing what kind of hp they could get out of a 305.It was a LG4 from a 82 Z-28.with a comp cam XE262H-10 xtreme energy hydralic flat tappet 16 deg BTDC and a edelbrock super victor single plane intake and a pair of vortec heads. with 750 holley double pumper.with these bolt ons it made 325 hp @5,800 rpm and 317 ft/lb torque @ 4,800 rpm. i was wondering if they could do this with simple bolt ons, what would you guys think if they would have gone farther like pistons and other internal parts??!!!
well thanks for any comments.

J.P.

p.s.: CAR CRAFT didnt bore the engine.

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[This message has been edited by buzcarlos (edited 09-11-2000).]

New forged pistons $500.00+, the Victor is for up stairs rpm, a forged crank to keep it alive at upstairs rpm, another $500.00+, Good rod bolts along with a set of rods needing rebuilt, how about $150.00. A balance job, what, about $150.00 or there-a-bouts. And, they already said another $500.00+ for a set of heads.
Put the money in something bigger, unless you just wanta do it. pdq67

Now take all of those parts and put them to a 350. What HP are we taking now? How much more torque are we making? I think it will quickly become clear the 350 is the right choice.

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Mark
1992 Firebird 355/Six Speed
1991 RS 350 / 700-R4
1987 Toyota Pickup 383 / 500 + HP 10.963 @ 119.95 Slicks / 11.997 @ 114.23 Radials

That was probably the limit for the 305 as you can't add bigger valves. I can tell you really want to build the 305. You can and you will be fine but its not cost effective and you can build a 350 easier and more powerfull with the same modifications. You can build a 305 for reasons like its your original motor and want to use it but beyond that there is no good reason to build a 305. Like Mark mentions, take the same modifications Car Craft did to the 305 and apply them to a 350 and you have a more powerful motor for the same price and pieces. No question

Mark is right on the money......its always fun to goof around with little motors to see what they can do, but if you apply the same techniques to a larger motor, you will naturally make more power for the same money.

hypothetical...
305 with cam x, 10:1 cr
350 with cam x, 10:1 cr
400 with cam x, 10:1 cr

They are all built the same; which one do you think makes the most power? I run a 396 with 9.5:1 cr. A 454 with the same cam and cr will make more power just because of inches. Give yourself every advantage you can take.

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"A days pay on the wild side"
67'Chevelle 396/400/4.10
used to have 84' z28 with all the goodies

hey guys,

thanks again.I have another ?. I was wondering if i could put a '86 heavy duty truck 350 4 bolt that has a 1 piece rear seal on my car since you guys insist on rebuilding a 350?Because i heard that its kind of difficult to put in because of the mods you need to do to the cross member?My uncle is giving me this block.

thanks again for your help and keep it coming,
J.P.

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First off, Heavy duty and one piece rear main do not go together well. They are not "bad" blocks, just a little thin. Don't bore more than .30 over. Besides the main, the motor is exactly the same. May need to pickup a different oil pan for your application. The one piece and two piece oil pans are different.

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Mark
1992 Firebird 355/Six Speed
1991 RS 350 / 700-R4
1987 Toyota Pickup 383 / 500 + HP 10.963 @ 119.95 Slicks / 11.997 @ 114.23 Radials
http://personal.lig.bellsouth.net/~racer383/

Mark W,

Isn't the flywheel different on the one piece seal newer crank then the old style two piece seat crank??? pdq67

pdq67: Thanks, I forgot, yes it is. I would prefer the newer blocks, if they were not so thin. The once piece seal tends to leak less, but IMHO is not worth the trade off in a race motor. For the street, they are fine.

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Mark
1992 Firebird 355/Six Speed
1991 RS 350 / 700-R4
1987 Toyota Pickup 383 / 500 + HP 10.963 @ 119.95 Slicks / 11.997 @ 114.23 Radials
http://personal.lig.bellsouth.net/~racer383/

you guys also filled me in on what to do with my 305 tbi thanks to buzcarlos..i am no mechanic so i was wondering..i have a 87 formula firebird and i guess i am gonna put a 350 in it now. So what kind of engine should i buy what all would i need to do to make the swap and how much do you guys think its gonna cost??.. yes yes i know its a camaro site but hey where brothers aint we??
any info would be just awsome, open to all suggestions

I am an owner of an 84 trans am with a 305 and it's pushing almost 400 horses over 400 ft.lbs of torque.It wasn't too pricy or difficult, and I haven't even touched the bottom end.First I got it to about 300 ponies with a cam,carb,hedders,intake,and heads.And then you add nitrous.You wouldn't believe the look on mustang owner's faces when they see how badly a little 305 smoked'em.That look alone is priceless

I have a 350. Its an automatic 4 speed. I can only get good horsepower by manually shifting from a stop. I guess thats ok.Its a very strong engine,but I am have some leak problems here and there.

By the way,its also a 1984 Camaro Z-28 Buz!

I made a post last week on an article that was on May Issue of Chevy High Performance.

Whoever said good things come in small packages must have been talking about the 305. A typical performance package for a mild 305 would include a divided-plenum intake manifold, a four barrel carb, 9:1 compression pistons, and stock heads. With a cam that offers 200 to 215 degrees of duration. 3.23 to 3.55 gears, 600cfm Carb. And dual exhaust. The Article says it will give a 305 a total 300HP and 300LBS of torque.

Compression 8.5:1
Heads Stock 1.94/1.50 inch valve
Intake Aftermarket Dual Plane
Carb Aftermarket 600cfm or Quadrajet
Ignition Stock HEI
Exhaust 1 5/8 headers with dual exhaust.

Cam Choices are as follows:
Comp Cams Xtreme Energy XE250H and also Crane Cams Energizer 266 H10.

I've got the part numbers from both vendors and here they are. Summit has them both in stock.

Comp Cams
Part Number 12-230-2
Grind CS-XE250H-10
Price $96.95

Crane Cams
Part Number CRN-100042
Grind 266 H10
Price $97.95

Good Luck! http://www.camaros.net/forum/cool.gif




[This message has been edited by Alfonso Perez (edited 04-17-2001).]

hey guys hows it going!well we finished putting the engine together and got to tell you it kicks ***.cant wait to put the exhaust system on. well hit me up if you to talk to me about some thing.talk to you guys later.

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84 Z L69 T-5 getting mods

i have a 76 camaro with a 81-84 305 in it. i want to get more horse power out of it. could u give me any tips??how much horsepower does it have now??? (it is all stock) i have a aluminum intake for it. also i have a holly 750 double pumper. buti i probly shouldnt put that on unless i build it up, right??what else shuld i do to it. where can i find out exactly what year it is??
write back asap

There is nothing wrong with a 305!

but they are right in saying a 400hp naturally aspirated 305 will cost a lot of money.

300hp is a very obtainable goal though, just have the heads ported, upgrade the exaust with headers, put on an intake, and beef up the cam.
after that, put on a shot of NOS, and you will hit your 400hp mark.

Killercamaro that carb is too big don't use it.

Buzcarlos put your 305 heads on your 350 and get a little more compression. I don't know what rpm's your expecting but it is a simple way to get more torque.

<BLOCKQUOTE>quote:</font><HR>Originally posted by killercamaro:
i have a 76 camaro with a 81-84 305 in it. i want to get more horse power out of it. could u give me any tips??how much horsepower does it have now??? (it is all stock) i have a aluminum intake for it. also i have a holly 750 double pumper. buti i probly shouldnt put that on unless i build it up, right??what else shuld i do to it. where can i find out exactly what year it is??
write back asap

<HR></BLOCKQUOTE>

my mods are in the sig.the aluminum intake would work good with a good cam so you could add it on now or wait for the cam so you wont have to take apart the top end twice.A high lift cam say around .490, well for a 305, the 750 could work good if tuned properly.also a little bowl and porting to the cylinder heads wouldnt hurt either.oh,and one more thing make sure you upgrade your ignition/wires/plugs,to a hotter spark and advance your timing a little.And the hores power on your engine would be around 160-170 hp and about 225-230 ft. of tork. hope this helps.let me know if you need any thing else. http://www.camaros.net/forum/smile.gif

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84 Z L69 rebuilt,w/ Isky cam .485" lift/232 dur @ 50. 350 heads 2.02/1.60 valves.Edl torker intake, gear drive,MSD HEI distributor,hooker shorty headers.3.73's,(need a new posi)Accel wires/header plugs gapped .47,holley 600 vac sec. (soon upgrading to 750 mec sec or a race demon mec sec.)

<BLOCKQUOTE>quote:</font><HR>Originally posted by killercamaro:
i have a 76 camaro with a 81-84 305 in it. i want to get more horse power out of it. could u give me any tips??how much horsepower does it have now??? (it is all stock) i have a aluminum intake for it. also i have a holly 750 double pumper. buti i probly shouldnt put that on unless i build it up, right??what else shuld i do to it. where can i find out exactly what year it is??
write back asap

<HR></BLOCKQUOTE>

my mods are in the sig.the aluminum intake would work good with a good cam so you could add it on now or wait for the cam so you wont have to take apart the top end twice.A high lift cam say around .490, well for a 305, the 750 could work good if tuned properly.also a little bowl and porting to the cylinder heads wouldnt hurt either.oh,and one more thing make sure you upgrade your ignition/wires/plugs,to a hotter spark and advance your timing a little.And the hores power on your engine would be around 160-170 hp and about 225-230 ft. of tork. hope this helps.let me know if you need any thing else. http://www.camaros.net/forum/smile.gif

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84 Z L69 rebuilt,w/ Isky cam .485" lift/232 dur @ 50. 350 heads 2.02/1.60 valves.Edl torker intake, gear drive,MSD HEI distributor,hooker shorty headers.3.73's,(need a new posi)Accel wires/header plugs gapped .47,holley 600 vac sec. (soon upgrading to 750 mec sec or a race demon mec sec.)

My car is sort of at a stand still since i dont have heat in my shed for the winter.but when you say tune the carb what do you mean exactly. i am a beginner at this. also how do i port the heads and what does that mean??? well write back soon