TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

Stroker kit for my 305 tbi ?

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Old Jan 25, 2002 | 09:43 AM
  #1  
Motopsyco's Avatar
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From: Plainwell, Mi U.S.A.
Car: 89 firebird, 03 Avalanche z71
Engine: 5.0 stock (for now)
Transmission: 700R4 auto
Axle/Gears: stock 2.73 for now
Stroker kit for my 305 tbi ?

I was checkin through Powerhouse through http://www.enginekits.com and they have a 335 stroker kit for the 305 for $600 and say it was used in Super chevy mag in march 99 on project silver streak camro, claims 115 (approx)on a 305 fi engine. has anyone seen this article? been thinkin of gettin the kit, and was also wondering if and how much the cylinders would be bored to do so. Also does anyone know of other stroker kits, and approxamate prices on them?

--Stormr
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Old Jan 25, 2002 | 09:58 AM
  #2  
Black Echo's Avatar
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From: Columbia, Mississippi, USA
Car: 1990 Pontiac Firebird Formula
Engine: 5.0 liter LB9 TPI
Transmission: MM5 Borg Warner T5 5 speed manual
Axle/Gears: G80 9 bolt Borg Warner posi / rear
About a year and a half ago, here on this site, a user, "Ray" I think, built a 335 TPI motor. He liked it, and the motor, IIRC, was more than a match for most Mustangs he found to play with. This is a difficult call, the 335 is unique, but a 350 is better in the long run. Most people will tell you to go with the 350 instead if you are wanting traditional small block performance.

The article you are talking about I will try to include shortly in my (major) overhaul of my site (a process that has been ongoing for some 5 months prior to me coming back here). The 335 is an interesting concept, but most people blow it off as 'unique' and 'expensively excessive', stating that if you have the money to stroke a 305 into a 335, you could use that money better by buying a 350 and putting work into it.

It all comes down to what you want to do. The 335 is a strong powerplant, but *not* as strong as an equally prepared 350. However, the 335 is *much* stronger than an equally prepared 305. If you want, I have the article in question. Send me private email and I'll try to scan it in for you when I can. After that, you can make an informed decision on your own, once you have all of the facts.
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Old Jan 25, 2002 | 10:09 AM
  #3  
Motopsyco's Avatar
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From: Plainwell, Mi U.S.A.
Car: 89 firebird, 03 Avalanche z71
Engine: 5.0 stock (for now)
Transmission: 700R4 auto
Axle/Gears: stock 2.73 for now
I always get the famous "just put in a 350 instead" quote. But i am one of those guys who are quite fond of my 305, and my bird, always been a great car. So i want to stick with what i got, and help it out some. besides i always like being unique and plus all my friends got 350s, so i need to be different (just to spite them). and I like the idea of takin out my friends 350 el caminos with my 305 firebird (taken one, close on other, his its quite built) also thanx for the info.
--Stormr
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Old Jan 25, 2002 | 10:42 AM
  #4  
BahamutRS's Avatar
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From: Parlin, NJ
Instead of the "get a 350" quote, why don't you get a 346?

I used to be obsessed with my 305. As for that stroker kit, I honestly think the cash would be better spend for a 350...it's cost and power effective, way more so than a 335.
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Old Jan 25, 2002 | 10:49 AM
  #5  
Mark305TBI's Avatar
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From: Huntsville, AL
Car: '00 Chevrolet Corvette
Engine: LS1
Transmission: 4L60E
Axle/Gears: 2.73
You should be unique on the big side (think 377, 383, 406, 420). Three of these are based on the 400 block, the 383 being the only one based on the 350. The small bore really limits the 305 since you get problems limiting your choice in cams with high lift. The lack of displacement doesn't help any either. It it's something you want to do though, more power to you. I just think you would be happier with a large displacement small block.
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Old Jan 25, 2002 | 10:49 AM
  #6  
TBI305Camaro's Avatar
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From: Barboursville, WV
everyone on this board talks like swapping a 350 in is just so easy and cheap...costs alot of money and down time. Also people seem to think you HAVE to have a 350 to get into the 13's...you dont. new heads, cam, intake and alot of suspension work will get a 305 into the 13's if done right (your gonna have to have the suspension mods anyways) one guy already got a 305 TBI to a 13.1 with stock cam, head...basically just a new intake, n2o and suspension. the potential is there and it would cost you roughly say 1,200$ for the heads, intake, and cam plus a bunch for suspension. thats less than swapping in a good crate 350. plus the 305 is known as a horrible motor. think of the looks youll get after kicking someones *** in a 305 TBI (TBI would make them even more sad) ill admit if i had the money and time id swap motors but i just cant so as of now the 305 is gonna stay in there for awhile
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Old Jan 25, 2002 | 08:23 PM
  #7  
TP355Z's Avatar
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From: Stafford CT
Car: 1988 Camaro SC
Engine: LT1 SBC
Transmission: LT1 T56
Axle/Gears: 3.73 Moser 12 Bolt
305?

I was puzzled with the same scenario - a 335 or a 350? (I had both long blocks ready to be rebuilt) and I decided on the 350. Basically - a 335 is an odd duck - you're stuck with a set of horrendous heads, small valves, small bore, and no real silver lining to it all. The 335 is still a 2-bolt 305, only it has a little torque. I'm 17 and managed to drop a very very well built 350 (balanced / blueprinted - and i'm not just throwing those lines around casually) into my camaro and i'm only into the car for about $5000 COUNTING the 2 parts cars I bought with it ($700) and the new interior ($500). $3800 for a 350 equipped Camaro with a true TBI system (I used all Holley) is great - and i can't wait to start spanking those arrogant new-mustang-4.6-guys.

TP
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Old Jan 25, 2002 | 11:25 PM
  #8  
JPrevost's Avatar
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Car: 91 Red Sled
Axle/Gears: 10bolt Richmond 3.73 Torsen
Well considering I could have done my engine swap for less than $3000 I think it's pretty good. It'll take more than $1200 to get the 305 into the low 13's. camaroracer1992 is the guy that did it with N2o and mad suspension work. Understand that his n2o kit was EXPENSIVE. It was only a 125 shot but he had all the goodies to leave off the line with it full on. Not only is this hard and unreliable, it's down right crazy with cast pistons, stock rods etc. But that makes it fun .
From what I've gathered, there is no reason why somebody with a 305 shouldn't save his/her money for a 350. Yes you can take $1500 now and get the 305 into the 13's but if you spend that money on a 350 you'd be even faster.
The whole bore to stroke ratio is the real pisser. In the past MANY MANY a bow tie fans were pissed that chevy went to the 350 the way they did. Not only from history but dyno proven performance has always come from increasing bore size, not stroke. I don't really like the 3.5" stroke. I think it's too much. I'd rather have had a 350 with a 4.3" bore and 3.25" (327) stroke. That didn't happen so ford took advantage of GMs crappy way to go about performance in the mid 80's and they made their own 302 (4" bore 3" stroke). I don't think I have to tell you all about the "5.0" but it's proof in the bag. Why INCREASE the stroke of a 305 that is already stroked! It's unique but at the same time, a really stupid investment.
The point about not having the money now for blah blah blah. The idea is you save up for the big stuff and you get big results. I was lucky in a sence since my 305 took a crap and left me with no choice. I didn't have time to rebuild so I invested $3000 into an ALL new motor with new TB, intake, water pump etc. It's like having a new car but now I have options like you wouldn't dream. I have an article that talkes about swapping in an Lt4 hot cam and using a victor jr single plane intake to make 422hp. Not too shabby and very cheap for the power.
There are reasons why guys say, "go with a 350" and it's not because we hate the 305. It's because we hate mustangs and more importantly imports. This might come off really bad but I don't care. I hate people that buy imports just because they're an import. There is no F'in reason why other than "looks different." I can count on my right hand how many imports I might consider owning. Then I think about it and say, hey...imports are all taxed up and really I'm getting not so much for my money. Not only that, I'm not supporting my American economy, instead I'm paying for some rich exec in some foreign country! That doesn't settle well with me.
Wow, that went astray from topic, lol.
Anyways, the 350 isn't only a great option, it's the best option. Like I said, there are MANY reasons to go with a 350. The trick is doing it so everyone else still thinks it's a TBI 305 RS camaro .
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