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  #31 (permalink)  
Old 04-30-2014, 01:55 PM
How fast is fast enough?
 
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Originally Posted by Timberghost357 View Post
Old bogie you sir just added a lot more info that I hadn't even thought about and thank you very much. After all that I'm going to sit down tonight and think hard if I really want to do this or not. I've taken junk yard 350's and dumped about 500 bucks into them and ran bone stock internals and have won races with them.
This class was designed for that very type of engine- junkyard 350s with a cam swap.

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  #32 (permalink)  
Old 04-30-2014, 02:09 PM
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This class was designed for that very type of engine- junkyard 350s with a cam swap.
Yes I do realize that but again I wanted to do something different and since we're not regulated to much on the internals of the motor a lot of guys are building strictly race engines now for that class within the rules that are specified.
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  #33 (permalink)  
Old 04-30-2014, 02:24 PM
How fast is fast enough?
 
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And if you want to win there's no reason to not run a stroked and poked 400 block- no reason to go smaller to a 302 though.
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  #34 (permalink)  
Old 04-30-2014, 03:02 PM
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And if you want to win there's no reason to not run a stroked and poked 400 block- no reason to go smaller to a 302 though.
Yea there may be no reason to go smaller to a 302 for me it boils down to I wanted something different, I was only thinking about making a 302 and I still might someday. If I go with a 400 block it'll be a 377 stroker, I don't like boring or putting sleeves in 400 blocks since they're thin around the cylinder walls already. Also I'm not out to win, yea it's nice when it happens but if that's all your out to do is win then you need to get off the track in my opinion because you lose focus on the sport being fun and that's all I want is to have fun. My current junkyard special 350 runs great but won't allow me to keep up with anyone.
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  #35 (permalink)  
Old 04-30-2014, 03:07 PM
How fast is fast enough?
 
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Yea there may be no reason to go smaller to a 302 for me it boils down to I wanted something different, I was only thinking about making a 302 and I still might someday. If I go with a 400 block it'll be a 377 stroker, I don't like boring or putting sleeves in 400 blocks since they're thin around the cylinder walls already. Also I'm not out to win, yea it's nice when it happens but if that's all your out to do is win then you need to get off the track in my opinion because you lose focus on the sport being fun and that's all I want is to have fun. My current junkyard special 350 runs great but won't allow me to keep up with anyone.
why are you so persistent with destroking?
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  #36 (permalink)  
Old 04-30-2014, 03:13 PM
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why are you so persistent with destroking?
I want something different that's why I'm persistent about it. Everyone and their mother builds 350's, 383's, 400's, 406's etc
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  #37 (permalink)  
Old 04-30-2014, 03:33 PM
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Originally Posted by vinniekq2 View Post
oldbogie,he can use race gas,DCR is not as big of an issue
My big concern was in him using the old open chamber heads which would wipeout a lot of compression. What I wasn't saying was not to go lower than the 8 to 1 of a DCR. He can certainly go higher if he's got fuel that can take it, but also once you get into that 8 or 9 to 1 region of DCR more compression does not yield power gains anywhere as large as what you see before getting onto that point.

Bogie
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  #38 (permalink)  
Old 04-30-2014, 03:48 PM
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I want something different that's why I'm persistent about it. Everyone and their mother builds 350's, 383's, 400's, 406's etc
I understand, this is interesting, but what you'll find is that flowwing a different drummer requires a lot of thought and probably money. Please keep us informed about this it's interesting.

Funny how an SCCA displacement rule of 305 inches intended to prevent the displacement wars at NASCAR from slopping over into SCCA created such interesting engine back in 1967. Here we are nearly 50 years later and it's still an icon.

Bogie
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  #39 (permalink)  
Old 04-30-2014, 04:30 PM
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I understand, this is interesting, but what you'll find is that flowwing a different drummer requires a lot of thought and probably money. Please keep us informed about this it's interesting.

Funny how an SCCA displacement rule of 305 inches intended to prevent the displacement wars at NASCAR from slopping over into SCCA created such interesting engine back in 1967. Here we are nearly 50 years later and it's still an icon.

Bogie
totally understand that it'll cost me a lot more money and frankly I'm not worried about if I'm doing something that makes me happy. Yes I get that if I were to build a common engine I'd be more competitive, all I want is something different.
I dumped about $3500 into a 250 inline 6 for my 74 shortwide chevy truck just be different. I managed to squeeze about 300hp out of it and it was a fun motor. A friend of my father built a 302 in the mid 90's for a stock class and he had very impressive results with it.
@oldbogie after talking to some people I decided not to use the 882 heads if I build the 302, I'd take my camel hump 186 heads off my truck and rebuild them to handle the rpms. They have 64cc chambers on them and I'd get the heads worked on to accept 2.02 valves.
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  #40 (permalink)  
Old 04-30-2014, 05:14 PM
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if you have to use a 500 cfm Holley and you have a few extra dollars to gamble,build a 420. Thats using a longer stroke crank in a 400. 3.875 Vs 3.750,,,
Again,you need to search for good castings, Thats what super stock drag racers do.You just have to find a pair of heads with the biggest cast holes from the factory
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  #41 (permalink)  
Old 04-30-2014, 05:42 PM
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Timberghost357, I cut my racin' teeth on 265's and 283's, back when a 283 bored to a 292 or a 301 was a "big" motor,, and I LOVE those little engines, so if you do this I wish you luck! But, as much as I love the small cube sbc's I hate to see you handicap yourself so much just to be different. If you do go 302, absolutely do NOT use the 76cc chambered heads. A 302 with flat top pistons and 76cc heads, built with a tight .040" quench, will still be under 8:1 static compression ratio! Even with the 64cc heads you'll be under 9:1 static CR. I'm not going so far as to suggest this, but using a stock bore 400 block with a 327 crank gives you a 348. Definitely different, and not giving up all those cubes!
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  #42 (permalink)  
Old 04-30-2014, 06:37 PM
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Originally Posted by Timberghost357 View Post
totally understand that it'll cost me a lot more money and frankly I'm not worried about if I'm doing something that makes me happy. Yes I get that if I were to build a common engine I'd be more competitive, all I want is something different.
I dumped about $3500 into a 250 inline 6 for my 74 shortwide chevy truck just be different. I managed to squeeze about 300hp out of it and it was a fun motor. A friend of my father built a 302 in the mid 90's for a stock class and he had very impressive results with it.
@oldbogie after talking to some people I decided not to use the 882 heads if I build the 302, I'd take my camel hump 186 heads off my truck and rebuild them to handle the rpms. They have 64cc chambers on them and I'd get the heads worked on to accept 2.02 valves.
I can relate, a bunch of decades ago I built a 292 six for a 64 Chevy II, it was very sudden and embaressed a great many V8s.

Bogie
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  #43 (permalink)  
Old 04-30-2014, 07:04 PM
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I can relate, a bunch of decades ago I built a 292 six for a 64 Chevy II, it was very sudden and embaressed a great many V8s.

Bogie
And there's nothing quite like the sound of a six at full song! Love it!
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  #44 (permalink)  
Old 04-30-2014, 07:55 PM
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You and fellow racers need to petition for a " ported head 305 " class
Then you can go nuts with 283's 302's 307's and 305's etc.
Allow all the small chamber ←58cc heads. Max cr and solid cam. Say .510" lift.
Low cost and fun. Rev 'em up.

(Allow the 305 vortex head and porting. Max 1.94 valve. And a Qjet Carb.

Your $$$.s at the gate have power. " Give us the class we want or we don't race."

Last edited by F-BIRD'88; 04-30-2014 at 08:02 PM.
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  #45 (permalink)  
Old 04-30-2014, 07:57 PM
How fast is fast enough?
 
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Originally Posted by F-BIRD'88 View Post
You and fellow racers need to petition for a " ported head 305 " class
Then you can go nuts with 283's 302's and 305's etc.
Allow all the small chamber ←58cc heads. Max cr and solid cam. Say .510" lift.
Low cost and fun. Rev 'em up.
Low cost except for the 3-5k spent on heads.
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