# Small Block Chevy Guys **URL:** \ **Category:** NYSpeed Automotive\ **Created:** [January 2, 2008, 6:15am UTC](https://forums.speedlife.net/t/small-block-chevy-guys/41082 "2008-01-02T06:15:10Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![ultradriver10000](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ultradriver10000/32/7397_2.png) [@ultradriver10000](https://forums.speedlife.net/u/ultradriver10000)\ **Post date:** [January 2, 2008, 6:15am UTC](https://forums.speedlife.net/t/small-block-chevy-guys/41082/1 "2008-01-02T06:15:10Z")
[http://buffalo.craigslist.org/pts/524339703.html](http://buffalo.craigslist.org/pts/524339703.html) This got me to thinking… what kind of numbers can you pull out of a 305. I think this guy is stretching some numbers, but in reality what can a built 305 make? Could you make a real rev happy one like the old school 302/rare 303 ? ---
**Author:** ![SVT3945](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/svt3945/32/7409_2.png) [@SVT3945](https://forums.speedlife.net/u/SVT3945)\ **Post date:** [January 2, 2008, 6:28am UTC](https://forums.speedlife.net/t/small-block-chevy-guys/41082/2 "2008-01-02T06:28:55Z")
the block wont hold up, these things have a habit of craking under normal use without any mods !! coveted hiltons motor? ---
**Author:** ![Coveted\_Hilton](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/coveted_hilton/32/5191_2.png) [@Coveted\_Hilton](https://forums.speedlife.net/u/Coveted_Hilton)\ **Post date:** [January 2, 2008, 11:41am UTC](https://forums.speedlife.net/t/small-block-chevy-guys/41082/3 "2008-01-02T11:41:48Z")
> [@SVT3945](#): > > the block wont hold up, these things have a habit of craking under normal use without any mods !! > > coveted hiltons motor? nah not my engine. but as far as the cracking of the block. i had a high out put 305 with a stock crank and stock rods putting 396 to the crank. (the heads were built, cam, pistons,header,intake,carb) no overbore just a hone. i was shifting it at 7200 with no problem’s, with a 308 rear. also, that engine did an 11 minute burnout and 13 minute burnout at 75 mph + the first time i won the burnout pits. it went to the burnout pits 3 times (6 burnouts), my shortest burnout was 7 minutes. tho i did have the center of my headers glowing orange during the 13 minute burnout. but the engine didnt even hit 200 after full days at lancaster making 20 + runs, or doing burnouts for the edge at summet. I Miss that engine and the turbo 350 that was behind it. with that said / babbling on about the engine. id say this guy isnt making 400 + but probably close to 400 with that build. depends on the pistons/ timing / heads i was 11:1 12 degrees advanced on the timing. ---
**Author:** ![1BADGPGT](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/1badgpgt/32/5123_2.png) [@1BADGPGT](https://forums.speedlife.net/u/1BADGPGT)\ **Post date:** [January 2, 2008, 11:59am UTC](https://forums.speedlife.net/t/small-block-chevy-guys/41082/4 "2008-01-02T11:59:36Z")
You can make power with them, you would just make more with same parts with more c.i. Also, like mentioned…theres stories of 305’s being weaker. I had a 305 with headers, intake, small shit…and got me almost 300k mi. when I was in my teens, so you KNOW it was beat on. Then again, it could have cracked something…I would have never known. Just add a qt. oil, top off the coolant, rub some dirt on it…it was ready for a roadtrip. 😉 ---
**Author:** ![FASTMOFO](https://avatars.discourse-cdn.com/v4/letter/f/9de053/32.png) [@FASTMOFO](https://forums.speedlife.net/u/FASTMOFO)\ **Post date:** [January 2, 2008, 12:08pm UTC](https://forums.speedlife.net/t/small-block-chevy-guys/41082/5 "2008-01-02T12:08:59Z")
I think 430hp is pushing it…I had a 305 with a cam,4bbl intake,holley carb,cheap headers, thing ripped. but no 400hp orangeiroc had a 305 done up im sure he will chime in ---
**Author:** ![SVT3945](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/svt3945/32/7409_2.png) [@SVT3945](https://forums.speedlife.net/u/SVT3945)\ **Post date:** [January 2, 2008, 12:21pm UTC](https://forums.speedlife.net/t/small-block-chevy-guys/41082/6 "2008-01-02T12:21:09Z")
67-69 302’s were rated at 275HP and they had 11-1 comp, I doubt any of these 305’s made more then that at the crank. ---
**Author:** ![speedped79](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/speedped79/32/7491_2.png) [@speedped79](https://forums.speedlife.net/u/speedped79)\ **Post date:** [January 2, 2008, 1:41pm UTC](https://forums.speedlife.net/t/small-block-chevy-guys/41082/7 "2008-01-02T13:41:22Z")
ill be making 500rwhp or so when my new setup is said and done ---
**Author:** ![Darksyde](https://avatars.discourse-cdn.com/v4/letter/d/ed655f/32.png) [@Darksyde](https://forums.speedlife.net/u/Darksyde)\ **Post date:** [January 2, 2008, 1:49pm UTC](https://forums.speedlife.net/t/small-block-chevy-guys/41082/8 "2008-01-02T13:49:01Z")
Guy I used to work with had a 305 in a blue Monte Carlo that was close to if not over 400. Anyone who raced at lancaster and NYIRP would know the car. As well as his current 66’ Chevelle. ---
**Author:** ![LZ1](https://avatars.discourse-cdn.com/v4/letter/l/7ab992/32.png) [@LZ1](https://forums.speedlife.net/u/LZ1)\ **Post date:** [January 2, 2008, 2:09pm UTC](https://forums.speedlife.net/t/small-block-chevy-guys/41082/9 "2008-01-02T14:09:22Z")
Why build up a 305? ---
**Author:** ![StrokedZ28](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/strokedz28/32/7592_2.png) [@StrokedZ28](https://forums.speedlife.net/u/StrokedZ28)\ **Post date:** [January 2, 2008, 2:22pm UTC](https://forums.speedlife.net/t/small-block-chevy-guys/41082/10 "2008-01-02T14:22:00Z")
305’s are garbage but they can still make over 300hp. I had an LG4 in my Z28 and deceided to go with a 350 instead. Cost of building a 305 versus getting a 350 block and building it up make the idea of a 305 pretty dumb. unless your just going to throw nitrous on it. ---
**Author:** ![Coveted\_Hilton](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/coveted_hilton/32/5191_2.png) [@Coveted\_Hilton](https://forums.speedlife.net/u/Coveted_Hilton)\ **Post date:** [January 2, 2008, 2:30pm UTC](https://forums.speedlife.net/t/small-block-chevy-guys/41082/11 "2008-01-02T14:30:02Z")
> [@FormulaLS1](#): > > Why build up a 305? i had a free engine, thats the Only reason i built it. ---
**Author:** ![Jack](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jack/32/7613_2.png) [@Jack](https://forums.speedlife.net/u/Jack)\ **Post date:** [January 2, 2008, 3:02pm UTC](https://forums.speedlife.net/t/small-block-chevy-guys/41082/12 "2008-01-02T15:02:51Z")
Even a free 305 isn’t worth putting the money into though right? ---
**Author:** ![reliant\_turbo](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/reliant_turbo/32/7189_2.png) [@reliant\_turbo](https://forums.speedlife.net/u/reliant_turbo)\ **Post date:** [January 2, 2008, 3:30pm UTC](https://forums.speedlife.net/t/small-block-chevy-guys/41082/13 "2008-01-02T15:30:31Z")
[http://www.nyspeed.com/forums/showthread.php?t=42977](http://www.nyspeed.com/forums/showthread.php?t=42977) 372 at the crank with just a few parts. 305’s arent quite as bad as people think even though the bore is small. Brian ---
**Author:** ![AJC2500](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ajc2500/32/4965_2.png) [@AJC2500](https://forums.speedlife.net/u/AJC2500)\ **Post date:** [January 2, 2008, 3:59pm UTC](https://forums.speedlife.net/t/small-block-chevy-guys/41082/14 "2008-01-02T15:59:12Z")
the thing that sucks about a 305 is they are the same stroke as a 350 but a smaller bore, so they are heavier. the 302’s had the same bore as a 350 but a tiny stroke, hence why they like the spin high rpm’s. they also never put a decent set of heads on 305’s. So maybe with a fuck ton of compression, the fully ported heads and the right cam/intake/carb combo, i guess. but its so much easier to make power with a 350. also i don’t believe the 305’s ever came with a 4 bolt bottom end, so spinning them at high rpm’s isn’t the greatest idea in the world. ---
**Author:** ![Coveted\_Hilton](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/coveted_hilton/32/5191_2.png) [@Coveted\_Hilton](https://forums.speedlife.net/u/Coveted_Hilton)\ **Post date:** [January 2, 2008, 4:09pm UTC](https://forums.speedlife.net/t/small-block-chevy-guys/41082/15 "2008-01-02T16:09:29Z")
> [@Jack](#): > > Even a free 305 isn’t worth putting the money into though right? i was doing a budget build when i was 17, it was a little goal of mine. 2000$ to go 12 seconds that was cost of car and tranny build included. i met my goal. i had a ton of free stuff laying around. pistons, cam,headers. the onlything i really bought for the engine, was bearings and gaskets. the rest of the stuff i had sitting around from my circle track days that was the only reason… if i had a 350 i would much rather have punched it .030 and built that. ---
**Author:** ![n20junkie](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/n20junkie/32/7396_2.png) [@n20junkie](https://forums.speedlife.net/u/n20junkie)\ **Post date:** [January 3, 2008, 5:09am UTC](https://forums.speedlife.net/t/small-block-chevy-guys/41082/16 "2008-01-03T05:09:50Z")
I will bet a weeks pay that thing doesn’t make 400hp. All it is is a stock engine with a carb and intake, plus a shitty cam. Maybe 350 on a good day and nitrous. 400, no way. ---
**Author:** ![1BADGPGT](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/1badgpgt/32/5123_2.png) [@1BADGPGT](https://forums.speedlife.net/u/1BADGPGT)\ **Post date:** [January 3, 2008, 6:53am UTC](https://forums.speedlife.net/t/small-block-chevy-guys/41082/17 "2008-01-03T06:53:26Z")
> [@SVT3945](#): > > 67-69 302’s were rated at 275HP and they had 11-1 comp, I doubt any of these 305’s made more then that at the crank. 302’s were made with performance in mind (forged crank, ect). 305’s not so much. Only reason I put those parts on the 305 was because they bolted to the 350. I personally wouldn’t go as far as spec’ing a head and cam combo for a 305. ---
**Author:** ![ultradriver10000](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ultradriver10000/32/7397_2.png) [@ultradriver10000](https://forums.speedlife.net/u/ultradriver10000)\ **Post date:** [January 3, 2008, 6:56am UTC](https://forums.speedlife.net/t/small-block-chevy-guys/41082/18 "2008-01-03T06:56:35Z")
I’d love to build an old school firebird with a 303 and make it rev to like 8K+… My 305 HO in my camaro was pretty strong for just taking off all the smog, a tune, exhaust work, shift kit and 3.73’s. In high school I thought the car was uber awesome. The best thing about small blocks is that they can go 300K+ get the snot beat out of them, leak everything and still run fine lol. ---
**Author:** ![1BADGPGT](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/1badgpgt/32/5123_2.png) [@1BADGPGT](https://forums.speedlife.net/u/1BADGPGT)\ **Post date:** [January 3, 2008, 7:00am UTC](https://forums.speedlife.net/t/small-block-chevy-guys/41082/19 "2008-01-03T07:00:23Z")
:word: thats how I was and how my engine was in my fake monte SS. ---
**Author:** ![Treads4Heads](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/treads4heads/32/7416_2.png) [@Treads4Heads](https://forums.speedlife.net/u/Treads4Heads)\ **Post date:** [January 3, 2008, 10:59am UTC](https://forums.speedlife.net/t/small-block-chevy-guys/41082/20 "2008-01-03T10:59:41Z")
why were they so prone to leaking everything? [Next page](https://forums.speedlife.net/t/small-block-chevy-guys/41082.md?page=2)