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  #16 (permalink)  
Old 02-01-2013, 04:49 PM
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Originally Posted by painted jester View Post
you can add a 4 hole spacer under the carb. to help the bottom end. if you run a Holley say 600 vacuum secondary you can tune it with a lighter or stiffer diaphragm spring to tune when the secondary's open. Run a 185 thermostat keeping it at optimum temp( best performance). The plug wires if you get low ohm can give you a horse power increase 40 or 25 ohm up to 10 horse. it wont effect your car radios but peoples T.V.s and home radios Will will be affected! low octane will probably be a better choice then mid or premium with your compression. You can advance or retard the cam with a stepped wood-ruff key or get a 3 key way gear set. A large capacity oil filter like for trucks will give you an extra qt. of oil and add a little cooling benefit! I have seen and added a 50 cc pump to the primary (with a spacer it will fit even on a stock intake) and a very light spring to the secondary diaphragm and an actuating cam that I hand filed to tune the squirt. These other guys may have many more little tricks and some old farts like me may have old drag cheats from stock class they would share!

Jester

Just read your going with a cam kit!
depends, it can be a roller cam 305.. without knowing what he has(didn't list in post engine year)

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  #17 (permalink)  
Old 02-01-2013, 04:54 PM
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Originally Posted by gearheadslife View Post
I'd stick with 305 heads..
crossfire 305/montySS heads if you can find a set.. or reuse yours

the vortec heads are 64cc your 305 is 58 or less..
you'll loose compression adding vortecs,
get a dualplane intake, junk yard cheap 84-86 f-body or monty alum factory carb intake..
get a none computer q-jet and rebuild it..
add cam.. if rebuilding heads, mill it a little
you'll get 290 ft lb's 220hp

if done right(cam choice)
remember the intake bolt angles changed in 86-87 and you didn't list what year your 305 is.. keep that in mind when on the junkyard crawl
the crossfire/ss heads 50 bucks at a all you can carry w-end
intake too, if you eat your wheaties
carb, 25-45+ rebuild kit (23.00 rock auto) float 7 bucks
cam and lifters 200+
mill heads 75.00 ish
gaskets figure 100.00+
the block is 355909 casting,1975-1979
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  #18 (permalink)  
Old 02-01-2013, 04:58 PM
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1986 back j/y parts..
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Old 02-01-2013, 05:03 PM
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Originally Posted by gearheadslife View Post
depends, it can be a roller cam 305.. without knowing what he has(didn't list in post engine year)
What in my post are you pointing out to me?

Jester
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Old 02-01-2013, 06:09 PM
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Originally Posted by gearheadslife View Post
1986 back j/y parts..
14101074 is the casting number on the alum intake. what quadrajet do you recommend?
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  #21 (permalink)  
Old 02-01-2013, 06:16 PM
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The performer RPM is the best intake to bolt on a SBC.
If the engine has a low compression ratio its really hard to cam it.
Does it have dished pistons? what is the cylinder head casting number?
There are only a few that are worth even looking at . And they need serious work to wake up.
with home porting,,,,4416 is best. 601 next best ... 450 434 junk....ditch these small valves small bad ports 2bbl

vortec 305 059 (58cc) from a L-30 has some potential.
vortec L31 062-906 great when shaved .050" on a 305.

A hot rodded 305 needs compression ratio stiff gears and a high stall. more is better.
Always start by assessing the basic health of what you got. Simple compression test.

Last edited by F-BIRD'88; 02-01-2013 at 06:23 PM.
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Old 02-01-2013, 06:28 PM
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Originally Posted by F-BIRD'88 View Post
The performer RPM is the best intake to bolt on a SBC.
If the engine has a low compression ratio its really hard to cam it.
Does it have dished pistons? what is the cylinder head casting number?
There are only a few that are worth even looking at . And they need serious work to wake up.
with home porting,,,,4416 is best. 601 next best ... 450 434 junk....ditch these small valves small bad ports 2bbl

vortec 305 059 (58cc) from a L-30 has some potential.
vortec L31 062-906 great when shaved .050" on a 305.

A hot rodded 305 needs compression ratio stiff gears and a high stall. more is better.
Always start by assessing the basic health of what you got. Simple compression test.
I dont remember the casting number but I remember one head is a 1978 and the other 1979 both are 58cc heads.
Factory pistons.
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  #23 (permalink)  
Old 02-01-2013, 07:17 PM
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Originally Posted by ss396si View Post
I dont remember the casting number but I remember one head is a 1978 and the other 1979 both are 58cc heads.
Factory pistons.
get the casting number.
Which factory piston? flat top, dished, rebuilt.
Ya it matters.
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  #24 (permalink)  
Old 02-02-2013, 05:49 AM
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get the casting number.
Which factory piston? flat top, dished, rebuilt.
Ya it matters.
I don't know what kind of pistons.
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Old 02-02-2013, 06:46 AM
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The performer RPM is the best intake to bolt on a SBC.

yup, it's is.. the g.m. intake is 25-35 bucks junk yard
per rpm is what 170
is the 145.oo clams worth the 4hp gain..
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  #26 (permalink)  
Old 02-02-2013, 07:18 AM
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Originally Posted by gearheadslife View Post
yup, it's is.. the g.m. intake is 25-35 bucks junk yard
per rpm is what 170
is the 145.oo clams worth the 4hp gain..
would the junkyard intake make more of a difference as opposed to my torker intake and edelbrock 600cfm carb already on?

Last edited by ss396si; 02-02-2013 at 07:26 AM.
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  #27 (permalink)  
Old 02-02-2013, 07:31 AM
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would the edelbrock performer rpm intake,cam and lifter kits be worth it?
the performer intake (non rpm) you can get off ebay for 50-75 bucks new it's 134ish

does the kit come with cam/lifters/springs?
you said 500.oo budget..
you don't need the rpm intake if your not going to rev it past 5400rpm much
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  #28 (permalink)  
Old 02-02-2013, 07:34 AM
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would the junkyard intake make more of a difference as opposed to my torker intake and edelbrock 600cfm carb already on?
thats a single plane intake.. it's junk on a 305 , street engine,
your torker isn't starting to help things till 3500-4000rpm
buy then the heads are starting to get out of breath..
any dual plan will make a world of difference


the j/y intakes only gonna work if your running a q-jet spread bore carb
if you are gonna run a square bore carb, get a used aftermarket dual plane..
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  #29 (permalink)  
Old 02-02-2013, 07:36 AM
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Originally Posted by gearheadslife View Post
thats a single plane intake.. it's junk on a 305 , street engine,
your torker isn't starting to help things till 3500-4000rpm
buy then the heads are starting to get out of breath..
any dual plan will make a world of difference
so ill buy the performer intake its worth the hp gain compared to price.
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  #30 (permalink)  
Old 02-02-2013, 07:47 AM
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I got mine used for 50 bucks..
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