stock 2 barrel carb and pistons good for a 350 sbc build? - Page 2 - Hot Rod Forum : Hotrodders Bulletin Board
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  #16 (permalink)  
Old 12-16-2012, 01:26 PM
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Originally Posted by ap72 View Post
On a super cheap build with vortec head and that mild cam with a 2bbl carb and stock exhaust manifolds I would expect around 275ish hp. Headers and a good exhaust will bump you a little over 300hp.

If it's just a cruiser and it works well I'd keep the 2bbl. Just make sure its properly tuned for your combo- a purely stock carb will not be tuned right.
i will be getting long tube headers and exhaust later on thats for sure stock manifolds are borring lol and hold back engine potential and just go with the edelbrock 600carb instead of the 2 barrel

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  #17 (permalink)  
Old 12-16-2012, 01:34 PM
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the reason am doing a so cheap build is to put to shame an 89 mustang 5.0 manual with upgrades like headers, intake, clutch, air intake, cam and ported heads, exhaust and maybe more, car ran a best of 14.3 but constantly running 14.6, he just keeps romping at me lol i have an easy kill with my ls1 t/a and my 385 stroker gta t/a but i want to beat him with minor mods and stock looking engine and heavier car to make fun of him
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Old 12-16-2012, 01:47 PM
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You will want to "hide" the cam then. I would look for a cam with a wide lobe separation and moderate lift. A roller hydraulic is the answer. Port the exhaust side of the heads. Use a dual plane intake and paint it.
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Old 12-16-2012, 01:55 PM
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You will want to "hide" the cam then. I would look for a cam with a wide lobe separation and moderate lift. A roller hydraulic is the answer. Port the exhaust side of the heads. Use a dual plane intake and paint it.
well about the cam he has a cam to. heads will look stock but he wont notice they are vortecs (i dont think he knows vortec heads potential) and i did port and cleaned the exhaust ports on the heads and have a brand new in box performer rpm vortec intake i wouldnt like to paint that one lol i will just hope is enough to beat him if not i will just have to bring my 99 ls1 t/a to play even though it only has knn ported maf and throttle body
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Old 12-16-2012, 02:14 PM
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your best chance to beat him cheap,,,take some weight out of the car and find a very short pair of sticky tires.
The Mustang is lighter and has a very low 3.27 first gear. You might 1/4 mile him but he might 1/8 mile beat you.
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Old 12-16-2012, 02:21 PM
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You can get some good stock four intakes and carbs that will make ok power but not as good as edelbrock. But will look dead factory under the hood. Same goes for manifolds that will flow enough to make good power. Usally some port work on factory manifolds is all that is needed if the right casting a choosen. But this is kind of art with the oem parts swapper guys. I can really help with all the part numbers needed to pull it off. But the 350 hp sounds possible.

I do think having the factory under the hood will be worth every penny if you plan on selling the car. If a buyer looks under the hood and sees intake and headers they always think the worst. Unless they know the engine builder and then still its a harder sale than oem stock look. No one complains if its four barrel and not a two. But headers will drop the pirce a bit unless they are a work of art in them selves.
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Old 12-16-2012, 06:46 PM
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your best chance to beat him cheap,,,take some weight out of the car and find a very short pair of sticky tires.
The Mustang is lighter and has a very low 3.27 first gear. You might 1/4 mile him but he might 1/8 mile beat you.
mmm well i have a 280h comp cam that am taking off from my c10 but that will be too much cam for the 2k stall
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Old 12-16-2012, 08:46 PM
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Jkingof956, with the Summit K1103 cam and Vortec heads I believe you should be in the area of your 350 HP goal. The GMPP CT 350 (350 CI 350 HP) crate circle track engine uses a stock 350 shortblock with vortec heads and the #24502476 cam (.435"/.460" lift, 212*/222* @ .050", 112* LSA). Your Summit K1103 has just slightly more lift and duration (.442"/.465", 214*/224* at .050", 112* LSA).
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Old 12-16-2012, 11:55 PM
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good luck the mustangs almost 900 lb lighter..

my dads old olds 77 cutlass s was 4178 lb with power windows/locks tilt and buckets console..
they took alot of metal out in 78. as my SS loaded is 3416
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Old 12-17-2012, 12:32 AM
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.. Those cars were known for terrible 9-11 MPG and sluggish performance with dished pistons and big 76cc chamber heads... nominal 8.5:1, but actually ~7.6:1 compression ratio. I'd definitely go stock type 4-eyebrow flat top pistons or even 2-eyebrow hypereutectic flat or minidome pistons such as KBs if they fit your budget to get power up throughout the RPM range and cruising MPG up near 17-20 MPG. That cam needs at least 9.5 and preferably 10.5-11.0 compression ratio to run STRONG, which is what you must have to win your race. Power should be 350-400 HP with that cam and Vortec heads depending on other final components used. Torque peak around 4000 RPMs, HP peak around 5500-5700 RPMs, shift at 6,000+ RPMs when racing. The factory RPM range suggested for that 214/224 cam is conservatively much lower because they don't know if you're putting it into a slug stock 7.6:1 engine, which most prolly are, yielding disappointing results. Borrow some short 275-50R-15 (or shorter) drag radials for the track. A 2-bbl. carb. would run fine but start noticably falling on its face at a low 3500 RPMs. Put a properly tuned vacuum secondary 750CFM carb. on it. 600 CFM carb.s usually come default tuned for 305" and slug 350" engines. You'll prolly need the 3000 stall converter to win your race.

Last edited by BuzzLOL; 12-17-2012 at 12:46 AM.
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  #26 (permalink)  
Old 12-17-2012, 07:55 PM
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Originally Posted by BigEd36 View Post
Jkingof956, with the Summit K1103 cam and Vortec heads I believe you should be in the area of your 350 HP goal. The GMPP CT 350 (350 CI 350 HP) crate circle track engine uses a stock 350 shortblock with vortec heads and the #24502476 cam (.435"/.460" lift, 212*/222* @ .050", 112* LSA). Your Summit K1103 has just slightly more lift and duration (.442"/.465", 214*/224* at .050", 112* LSA).
oh ok i really thought it was going to make close to 300hp cause of the small summit cam but this is good to know that am headed the right direction
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Old 12-17-2012, 08:00 PM
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Originally Posted by gearheadslife View Post
good luck the mustangs almost 900 lb lighter..

my dads old olds 77 cutlass s was 4178 lb with power windows/locks tilt and buckets console..
they took alot of metal out in 78. as my SS loaded is 3416
yeah i know mustang is lighter but the good part is his crappy times for the mods it has, i mean running a constant high 14s i can easily beat him with my crappy 13.8 letting off before the quarter that my stock ls1 with some bugs ran
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  #28 (permalink)  
Old 12-17-2012, 08:06 PM
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Originally Posted by BuzzLOL View Post
.. Those cars were known for terrible 9-11 MPG and sluggish performance with dished pistons and big 76cc chamber heads... nominal 8.5:1, but actually ~7.6:1 compression ratio. I'd definitely go stock type 4-eyebrow flat top pistons or even 2-eyebrow hypereutectic flat or minidome pistons such as KBs if they fit your budget to get power up throughout the RPM range and cruising MPG up near 17-20 MPG. That cam needs at least 9.5 and preferably 10.5-11.0 compression ratio to run STRONG, which is what you must have to win your race. Power should be 350-400 HP with that cam and Vortec heads depending on other final components used. Torque peak around 4000 RPMs, HP peak around 5500-5700 RPMs, shift at 6,000+ RPMs when racing. The factory RPM range suggested for that 214/224 cam is conservatively much lower because they don't know if you're putting it into a slug stock 7.6:1 engine, which most prolly are, yielding disappointing results. Borrow some short 275-50R-15 (or shorter) drag radials for the track. A 2-bbl. carb. would run fine but start noticably falling on its face at a low 3500 RPMs. Put a properly tuned vacuum secondary 750CFM carb. on it. 600 CFM carb.s usually come default tuned for 305" and slug 350" engines. You'll prolly need the 3000 stall converter to win your race.
tell me about it, very low mpg and very sluggish performance only good thing it has is a really nice takeoff off the line, talking bout pistons i do have some but are 40 over flat top pistons 4 eyebrow but am willing to work with stock pistons with vortec 64cc and a thin gasket for more compression ratio
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  #29 (permalink)  
Old 12-18-2012, 01:42 PM
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i just installed a muffler, i will be looking for a posi unit, and going with 700r4 fully build, another reason why so cheap build is because i already have most of the upgrades some were free and ready to install
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Old 01-11-2013, 06:33 PM
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.. Did you get any further on this?
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