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  #46 (permalink)  
Old 09-08-2013, 07:44 AM
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pulled the valve covers this mourning and they are 416 heads
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  #47 (permalink)  
Old 09-08-2013, 08:18 AM
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Most likely then you have the 305 HO. Unless someone replaced the heads.You should also have flat top pistons as well.With the rite parts & details,you can build a decent performer out of it.Best option would be,IMO,build a bulletproof bottomend,then blow it,or,add the bottle & go bust a few Mustangs in the ***** !!!
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Old 09-08-2013, 08:22 AM
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hahaha well im not sure man do you think porting them would do anything? im probably going to have this engine for a couple years maybe
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Old 09-08-2013, 08:38 AM
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or if i can find a 350 at a junkyard that would be another option maybe a 400 sbc maybe
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Old 09-08-2013, 08:50 AM
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Determine the power you need/want,then decide how to get there.Include budget in design.
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Old 09-08-2013, 09:09 AM
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if i can find a 96 or so vortec motor i can put a RPM intake on it right? and that should be good then headers and rear end gearing
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Old 09-08-2013, 09:21 AM
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intakes/headers and gears are available for most cars on the planet
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Old 09-08-2013, 09:29 AM
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I would definitley start w/ a later model roller block.The Vortec 350 is a good platform to start with.1 piece RMS,roller cam & lifters,heads that can support 400 HP.9.4:1 CR.Stock pistons are kinda crappy from a performance standpoint,but.overall,a good foundation to build on.
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  #54 (permalink)  
Old 09-08-2013, 10:28 AM
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Quote:
Originally Posted by eldudderino View Post
hahaha well im not sure man do you think porting them would do anything? im probably going to have this engine for a couple years maybe
Yes you can get good result by porting the 416 heads. its a good bit of work
and larger 1.94 valves works best.
Yes it will make a lot more power than the stock as cast 4416 head.
Stock flow is about 185cfm @28"
Typical full port with 1.94" valves is 234cfm @28" Thats a big increase. (A stock as cast L31 vortec head flows 228cfm)
Any thing in the 230's is good.
This is only one of may ways to skin this cat but this is what you can expect
from full home ported 4416 heads.
When fully ported as I describe they are capable of making over 400hp.
But you got to put a 400hp engine under them.

One path to power is to port these heads and then supercharge your (dished piston low cr 305 using these heads in ported form.
The Edelbrock E force blower + a suitable high perf cam + headers and a big 750++cfm carb will get that 305 going.
if the engine is in good basic health and has the dished pistons already
you can use the stock short block pretty much as is.
it will make very good street supercharged power in your Camino.
Just one way you can go fast using much of what you already got.

if you are allergic to work and doing things for yourself (hand porting) this may not be for you.

Another path to power using the 305 is to use 350Vortec heads on it and the Edelbrock E force supercharge for Vortec E tec heads. The key is a low engine compression ratio 8.5:1 or less. The dished pistons allow this with a 62 to 64cc head on a 305.
This is pretty much a Bolt On deal on your 305.
Another good way to go fast.
The rest is the same.

Supercharged power is very hard to beat on the street. It is VERY EFFECTIVE if you really want to go fast.

Last edited by F-BIRD'88; 09-08-2013 at 10:40 AM.
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  #55 (permalink)  
Old 09-08-2013, 10:49 AM
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Nice little street blower cam for your supercharged 305 with either ported 4416's or L31 vortec heads on it.
Bolt in with just a valve spring change.
Comp cams CS268AH-14 pn #12-404-4
Use a 750 or 800 or 850cfm carb.

Usually on these cars you use a Cowl induction hood (2.5" to 3") so the Edelbrock blower fits under El Camino hood. A small low profile hood scoop works too.

The Weiand 142cid blower is another very good way to supercharge this motor.

Last edited by F-BIRD'88; 09-08-2013 at 10:58 AM.
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Old 09-08-2013, 10:54 AM
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yeah man i think i can afford a supercharger on my budget
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Old 09-08-2013, 11:05 AM
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Quote:
Originally Posted by eldudderino View Post
yeah man i think i can afford a supercharger on my budget
Well if you actually want to beat those Mustangs, you need the power to do that.
Your El Camino weights more than a Mustang does. To run faster you will need more horsepower.

You can cost analyze all the different ways to do that.
By the time you do that with all the real costs involved, included and added
up you will see it is very cost effective and you get the real performance you are looking for. And use much of what you already got on hand.

Supercharged power is very reliable. You will have this motor for a long long time.
If your 305 is the low cr base version with dished 305 pistons and is in good overall condition it is a good usable base for this supercharged 305. Expect 425 to 450HP on pump gas as discribed. Maybe a bit more.
The low compresion ratio allows you to step on it pretty good ( blower boost) and make great power on premimum pump gas.
425HP is the low side with low modest sissy blower boost.
@ a 8psi blower boost level on this motor ( pulley upgrade+boost retard) I would expect 460-470+HP from it.

Last edited by F-BIRD'88; 09-08-2013 at 11:12 AM.
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  #58 (permalink)  
Old 09-08-2013, 11:11 AM
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Quote:
Originally Posted by eldudderino View Post
yeah man i think i can afford a supercharger on my budget
That sounded like sarcasm lol.....they re just trying to tell you all is not lost just because its a 305.
Being realistic, $1000 isn't a "budget" for performance anything. Its gas money for a couple months.
If its my El Camino, is not a daily driver, and its only purpose is to run a few mustangs down on a Fri night my $1000 goes like this
It likely has 342ish gears
$100 on a mini spool
$300 on long tubes, straight thru race bullets and turndowns
$100 on tune up parts
$250 on a used high rise intake and 650DP
$250 on a used plate kit and spray it with 150 shot.
If it breaks, who cares, its a 305 and the yard has plenty for sub $500 bucks.
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Old 09-08-2013, 11:21 AM
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Quote:
Originally Posted by jokerZ71 View Post
Most likely then you have the 305 HO. Unless someone replaced the heads.You should also have flat top pistons as well.With the rite parts & details,you can build a decent performer out of it.Best option would be,IMO,build a bulletproof bottomend,then blow it,or,add the bottle & go bust a few Mustangs in the ***** !!!
Quote:
Originally Posted by vinniekq2 View Post
Determine the power you need/want,then decide how to get there.Include budget in design.
Quote:
Originally Posted by F-BIRD'88 View Post
Nice little street blower cam for your supercharged 305 with either ported 4416's or L31 vortec heads on it.
Bolt in with just a valve spring change.
Comp cams CS268AH-14 pn #12-404-4
Use a 750 or 800 or 850cfm carb.

Usually on these cars you use a Cowl induction hood (2.5" to 3") so the Edelbrock blower fits under El Camino hood. A small low profile hood scoop works too.

The Weiand 142cid blower is another very good way to supercharge this motor.
Quote:
Originally Posted by bygddy View Post
That sounded like sarcasm lol.....they re just trying to tell you all is not lost just because its a 305.
Being realistic, $1000 isn't a "budget" for performance anything. Its gas money for a couple months.
If its my El Camino, is not a daily driver, and its only purpose is to run a few mustangs down on a Fri night my $1000 goes like this
It likely has 342ish gears
$100 on a mini spool
$300 on long tubes, straight thru race bullets and turndowns
$100 on tune up parts
$250 on a used high rise intake and 650DP
$250 on a used plate kit and spray it with 150 shot.
If it breaks, who cares, its a 305 and the yard has plenty for sub $500 bucks.
ya this thing is going to be my daily driver and i dont have the money yet to do anything but your answer is more realistic hahaha
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  #60 (permalink)  
Old 09-08-2013, 11:24 AM
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Sub $500....I get people giving me complete running good condition 305's for FREE.

if you want to do the low buck nitrous 305 deal I can suggest a few specific changes.
This too can be very effective and reliable.
And like said if you exceed the laws of physics and it comes unglued a replcement 305 is
dirt cheap.

A few changes 1. use 4.10 gears ( from a old S-10 pick up with 4 cylinder)
2. do not use a spool. Get a eaton or a Auburn posi.
3. port the hell out of the 305 heads. new springs drill roll pin the rocker studs.
Crane F278-2 street solid lifter cam. allows you to really rev it with nitrous.
Trust me it will want to rev with nitrous.
3. high stall converter 10" 3500 stall rated minimum. The higher the stall the better. a 9" race converter is not too much.
4. sticky ET street tires.
5. NOS Cheater nitrous system, rebuilt fuel system on car with two independant 3/8" fuel lines, pumps and tank pickups.
6. Drive shaft safety loop.
7. Performer RPM intake or Vic JR intake and 750cfm carb .
8. potential 11sec quarter mile ets all using the stock 305 short block. (450++++HP on nitrous)
low 12's is no sweat.

9.use a th350 transmission. this nitrous 305 makes enough poer to kill pretty much any of the OD autos.

Last edited by F-BIRD'88; 09-08-2013 at 11:30 AM.
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