372hp @ 6100 305 baby!
#1
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Car: 88 Camaro
Engine: 310 LG4
Transmission: 700R4 w/2200 stall
Axle/Gears: 3.42
372hp @ 6100 305 baby!
I hope that this hasnt been posted yet, it's been a while since i've posted.
If anyone else reads Engine Masters magazine, you've surley read the article about the 305 build in the latest issue called, "Hate me". They used the following parts:
LG4 ( i think, they talk about an LB9, but the pic of the block says "LG") with dished pistons
Holley 650 4bbl
COMP XE268H 224/230
RPM AirGap manifold
EngineQuest Lightning vortec heads 1.94/1.50 with roller rockers
Headers (i dont recall what they used)
Not bad at all. Those heads are hella cheap! They say that the 305 is shunned becauseof the bore size, but they said the stroke/bore ratio is slighlty better than a stock 454 (did not specify BB or SB).
Take that! I'm stoked because I used very similar parts and did much more than them.
The motor did 372 @ 6100 on the engine dyno.
If anyone else reads Engine Masters magazine, you've surley read the article about the 305 build in the latest issue called, "Hate me". They used the following parts:
LG4 ( i think, they talk about an LB9, but the pic of the block says "LG") with dished pistons
Holley 650 4bbl
COMP XE268H 224/230
RPM AirGap manifold
EngineQuest Lightning vortec heads 1.94/1.50 with roller rockers
Headers (i dont recall what they used)
Not bad at all. Those heads are hella cheap! They say that the 305 is shunned becauseof the bore size, but they said the stroke/bore ratio is slighlty better than a stock 454 (did not specify BB or SB).
Take that! I'm stoked because I used very similar parts and did much more than them.
The motor did 372 @ 6100 on the engine dyno.
#2
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Car: 1987 Z28 Camaro
Engine: LB9 V8 305-cid
Transmission: 4 speed automatic - 700r4
Axle/Gears: stock - 2.73 rear end
Interesting...
I think I'll have to go find that magazine and have a look at that article. After I get done repainting my 87 Z28 and having the interior replaced, I'm going to look into the motor department.
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#5
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Car: 88 Camaro
Engine: 310 LG4
Transmission: 700R4 w/2200 stall
Axle/Gears: 3.42
Either way, it wasnt much money and it is cool that they were able to get 372hp from it without much work.
Learn somethign new everyday.
Last edited by 88_Import_Slaye; 11-21-2006 at 11:12 AM.
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Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
I hope that this hasnt been posted yet, it's been a while since i've posted.
If anyone else reads Engine Masters magazine, you've surley read the article about the 305 build in the latest issue called, "Hate me". They used the following parts:
LG4 ( i think, they talk about an LB9, but the pic of the block says "LG") with dished pistons
Holley 650 4bbl
COMP XE268H 224/230
RPM AirGap manifold
EngineQuest Lightning vortec heads 1.94/1.50 with roller rockers
Headers (i dont recall what they used)
Not bad at all. Those heads are hella cheap! They say that the 305 is shunned becauseof the bore size, but they said the stroke/bore ratio is slighlty better than a stock 454 (did not specify BB or SB).
Take that! I'm stoked because I used very similar parts and did much more than them.
The motor did 372 @ 6100 on the engine dyno.
If anyone else reads Engine Masters magazine, you've surley read the article about the 305 build in the latest issue called, "Hate me". They used the following parts:
LG4 ( i think, they talk about an LB9, but the pic of the block says "LG") with dished pistons
Holley 650 4bbl
COMP XE268H 224/230
RPM AirGap manifold
EngineQuest Lightning vortec heads 1.94/1.50 with roller rockers
Headers (i dont recall what they used)
Not bad at all. Those heads are hella cheap! They say that the 305 is shunned becauseof the bore size, but they said the stroke/bore ratio is slighlty better than a stock 454 (did not specify BB or SB).
Take that! I'm stoked because I used very similar parts and did much more than them.
The motor did 372 @ 6100 on the engine dyno.
#7
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Car: 87 Monte Carlo ss
Engine: ZZ4 1.5 rollers 650DP
Transmission: Probuilt 700-R4
Axle/Gears: 8.5 GN 3.42
Thats a pretty big cam for a 305 as a daily driver or are you talking about a 335 stroker? That would tame it a little but It would lope pretty dam hard and get low vaccum.
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Car: 1985 Sport Coupe Camaro
Engine: 305 4 Barrel
Transmission: Stock
Axle/Gears: Stock
hey i have went to the engine master website and i cant find that article is there a way i could see it online?
#11
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Car: 1987 Monte Carlo SS
Engine: 400 SBC
Transmission: 200-4R
Axle/Gears: 4.10
I suppose if one had that engine he could just tell everyone it was a 350 so that they would stop telling him to swap out to a 350.
But then it would lose the "wow" factor of it being a 305 I guess. I for one think that is an awesome build up, I'd like to try something along those lines someday.
But then it would lose the "wow" factor of it being a 305 I guess. I for one think that is an awesome build up, I'd like to try something along those lines someday.
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Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
Holley 650 4bbl
COMP XE268H 224/230
RPM AirGap manifold
EngineQuest Lightning vortec heads 1.94/1.50 with roller rockers
Headers (i dont recall what they used)
COMP XE268H 224/230
RPM AirGap manifold
EngineQuest Lightning vortec heads 1.94/1.50 with roller rockers
Headers (i dont recall what they used)
I do believe the 350 would generally make 50+ HP, but 425HP sounds high for that combo of parts.
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Car: '92 Corvette, '89 1/2-a-'Vette
Engine: LT1, L98
Transmission: ZF6, ZF6
Axle/Gears: 3.45, 3.31
And a 400 would make another 50. So?
#14
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I see that combo as being a solid 370HP build, on a 350. I honestly don't think those parts there would make 425HP on a 350, which leads me to believe it'd be "tricky" to make it happen with a 305.
I do believe the 350 would generally make 50+ HP, but 425HP sounds high for that combo of parts.
I do believe the 350 would generally make 50+ HP, but 425HP sounds high for that combo of parts.
that cam is tons bigger than stock LT1. i could see 400crank hp easily on a tune
#15
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I agree. I think the bore/stroke card is WAY overplayed when people are trying to "diss" the 305. It has a bore/stroke ratio of 1.10, which is MUCH better than another highly respected and sought after small block Chevy engine; the 505 hp LS7, at 1.03 ratio. How come it's valves aren't "too shrouded" to do anything with?
You can get a 305 running quite well with Vortecs and a good cam and would surprise many 350s,, but their really is no replacement for displacement,,, especially when increasing the bore is concerned.
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Car: '92 Corvette, '89 1/2-a-'Vette
Engine: LT1, L98
Transmission: ZF6, ZF6
Axle/Gears: 3.45, 3.31
You're right though; there is no replacement for displacement -that's certainly a no brainer.
#18
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Engine: '85 Monte SS L69 305
Transmission: TH 200-4R
Axle/Gears: 3.23
Bore/stroke ratio aside, what happens when you increase volume is that the surface area doesn't increase accordingly. Breathing takes place via that a percentage of that surface. So I conclude that a small cylinder has the potential to breathe better than a big. It's not without reason that you tend to increase the number of cylinders as you increase engine size.
And how about those small 3.5cc model car engines that churn out 2.2 hp? Granted they are 2-stroke, run on 35% nitro and turn 32000 rpm, but what would it take to make a n.a. 350 churn out 3583 hp? I'm just asking..
Don't get me wrong, I accept that the 350 is cheap and easy bang for the bucks, and I love big engines with loads of torque, but this thread was about horsepower in "small" engines.. Or?
And how about those small 3.5cc model car engines that churn out 2.2 hp? Granted they are 2-stroke, run on 35% nitro and turn 32000 rpm, but what would it take to make a n.a. 350 churn out 3583 hp? I'm just asking..
Don't get me wrong, I accept that the 350 is cheap and easy bang for the bucks, and I love big engines with loads of torque, but this thread was about horsepower in "small" engines.. Or?
#19
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There's nothing "wrong" with the bore to stroke ratio in the 305 or even the 334 (305 w/400 crank) for that matter. The 305 or 334 can make power and they respond as well to modifications as any other SBC up until a certain level. Here's a link to a post I made some time back with a 325hp Vortec 305 build and a 387HP @ 6000 rpm 305 build. I included a run of the mill 350 Vortec build and graphs to show the power difference between a similarly built 305 and 350. The 350 with a point less compression and 6degrees more duration at .050 with fractionally more lift produced 100,, yes,,, 100lb/ft more torque at 3000rpm and 86lb/ft peak to peak.
I'm not knocking the 305,, you can get them to run,,, I used the old L69 as a back-up engine when I pulled the 406 out of the Monte for a fresh-up and upgrades many moons ago. I pocket ported the heads, lapped the valves, threw in a 225/225 - 108 Lunati I had laying around,, used the oversized 7525 Team G single plane I was running on the 406,,, the same tricked out 750 vac carb I had on the 406 as well as the 1.75" headers and dual 3" exhaust. I about crapped myself when it ran a 11.87 on a 200 shot. That was a cheap solid 11-second ride and I got more complements on the way it sounded (it hit pretty hard) compared to the 406 that idled relatively smooth,, but was 1/2 quicker off the bottle than the 305 was with a 200 shot.
Anyway,, just passing on info.
https://www.thirdgen.org/forums/tech...ortec-afr.html
I'm not knocking the 305,, you can get them to run,,, I used the old L69 as a back-up engine when I pulled the 406 out of the Monte for a fresh-up and upgrades many moons ago. I pocket ported the heads, lapped the valves, threw in a 225/225 - 108 Lunati I had laying around,, used the oversized 7525 Team G single plane I was running on the 406,,, the same tricked out 750 vac carb I had on the 406 as well as the 1.75" headers and dual 3" exhaust. I about crapped myself when it ran a 11.87 on a 200 shot. That was a cheap solid 11-second ride and I got more complements on the way it sounded (it hit pretty hard) compared to the 406 that idled relatively smooth,, but was 1/2 quicker off the bottle than the 305 was with a 200 shot.
Anyway,, just passing on info.
https://www.thirdgen.org/forums/tech...ortec-afr.html
#20
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Car: 88 Camaro
Engine: 310 LG4
Transmission: 700R4 w/2200 stall
Axle/Gears: 3.42
http://www.popularhotrodding.com/eng...cks/index.html
there is the link to the article online. enjoy.
there is the link to the article online. enjoy.
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