: new bare block 350. what combo can i do?
DragTop Apr 28th, 06, 12:26 PM picking up a bare 350, 4 bolt main. my goals are a streetable reliable power monster. so i will invest as much as it takes. what bore/crank/piston size combo will work. i did a search but i just got part names. no numbers.
DragTop Apr 28th, 06, 12:29 PM note i will be supercharging in the future so lets keep the compression numbers reasonable.
350_Malibu Apr 28th, 06, 12:30 PM Bare Lock? Possibilities are endless.
I'm getting ready to do the same with a 454 block I just got.
DragTop Apr 30th, 06, 5:07 PM anyone? picking it up tommorow
1971 Chevelle Apr 30th, 06, 5:34 PM If you are looking for a torque monster go 383. If you want to rev it more stay 355. If you really want to rev it high put a 327 crank in it.
Eric68 Apr 30th, 06, 5:58 PM Go with a 383 IMO. Mine went to 7 grand with an aftermarket cast crank and I beam rods. No issues.
If you plan to build a blower motor shoot for 8.5:1 compression and get heads with a good exhaust port.
It sounds like you are a long ways away from figuring out what combo you are going with, you need to nail that down before you start looking for part numbers.
BillsCamino Apr 30th, 06, 8:36 PM A bare 350 block...gotta buy a complete rotating assembly?
Absolutely NO reason to build a 350.
Do a 383!!
bdc1013 Apr 30th, 06, 9:05 PM yeah now-a-days if you are going to build up a 350, it doesn't cost that much more to do a 383, if not at all... I have a 383 and the power range available for it is mind boggling. I'm 490 at the crank, and that's fairily mild
64chevellesteve Apr 30th, 06, 9:44 PM hey guys go easy on the 350. i got 425hp with 11:1 the isky 292 mega. cam. ported 461 fuelies with 2:02 intake 1:6 exh. victor jr. 780 holley. the block is a stock 2 bolt main. rods are stock with a.r.p. bolts full float j.e pistons in my wagon it runs mid 11"s and drives almost daily on the street no problems now for 3 years!! and it was dirt cheap to build
greg_moreira Apr 30th, 06, 11:57 PM The problem with building the engine with the intentions to make changes later on is that your going to have to sacrifice something somewhere. Meaning, you build a blower motor and take it all the way and do it right, you got a good motor. You pull that blower off and change nothing(just the lack of a blower)....and it aint going to be superb. You could compromise so that it runs well on or off boost...but of course, compromise is the key word.
Here is a naturally aspirated combo Id consider. 383 inches with around 10.5:1 comp, afr 195 or brodix race rite 200cc aluminum heads(With the cnc chambers), one of the voodoo solid rollers(the 60133 looks good!). Its numbers are 249/255 at .050 on a 110 LSA with .585/.600 lift. Of course youd want all good rotating components. Steel 4340 rods and crank(6 inch rods preferably), forged pistons too. Thats one healthy motor. With some 4.10's and a converter that flashes 4000ish or a hair better...youd be low 11's!. Of course, here is the prob with that. The compression is high for one on a blower. You wouldnt necessaily need that much cam(less comp of course.....a good bit less), different exhaust lobe would probably help....and that converter that flashed right behind the NA motor would probably act a good bit different behind the changed up combo with the blower. Know what Im sayin. So, you either gotta go all the way one direction or the other, or compromise a bit so that it runs good as is, but will allow the blower to strap on with relative easy later without having to totally change it all up.
Give us an idea of what youd like to build. How long will it take for the blower, and how fast are you lookin to go? how much street drivin too? We might be able to come up with something that suits you well with or without the blower.
Camaro_fever68 May 1st, 06, 12:34 AM If you like to be different, you can build a 396 with a 3.875 crank. I like 383's because the cost to hp is so efficient. The 383 also offers more off the shelf pistons for a better selection.
350_Malibu May 1st, 06, 12:40 AM Bare Lock? Possibilities are endless.
I'm getting ready to do the same with a 454 block I just got.
Mind you I meant "Bare Block". Wow I got some major carpal tunnel or something.
DragTop May 1st, 06, 10:00 AM i figured you ment bare block, its all good. well a little info would help. currently i just finished the 283 .60 over 10.5:1 compression worked heads (did them myself ) 3 angle, 1.6 intake 2.02 exhaust. performer intake, 700 cfm endlebrock carb upgraded fuel pump, with underdriver pulleys. it good enough for a cruiser. i assume in in the 275 hp range. which is fine for the p/g but these are my tru goals.
500-600hp streetable
reason i said with a blower is because my freind has Weiand Supercharger kit 142 kit which we slaped on to a 75 vette, but he just picked up an 04 vette motor tranny and harness so if i help him do the work he will sell me the charger cheep. so im shooting for 400-450 hp NA on 9:1 compression.
so i guess a part list for this
383 .60 over at 9:1 compression. i need head numbers too. i can build the heads just the cfm and sizes please.
DragTop May 4th, 06, 10:54 AM The problem with building the engine with the intentions to make changes later on is that your going to have to sacrifice something somewhere. Meaning, you build a blower motor and take it all the way and do it right, you got a good motor. You pull that blower off and change nothing(just the lack of a blower)....and it aint going to be superb. You could compromise so that it runs well on or off boost...but of course, compromise is the key word.
Here is a naturally aspirated combo Id consider. 383 inches with around 10.5:1 comp, afr 195 or brodix race rite 200cc aluminum heads(With the cnc chambers), one of the voodoo solid rollers(the 60133 looks good!). Its numbers are 249/255 at .050 on a 110 LSA with .585/.600 lift. Of course youd want all good rotating components. Steel 4340 rods and crank(6 inch rods preferably), forged pistons too. Thats one healthy motor. With some 4.10's and a converter that flashes 4000ish or a hair better...youd be low 11's!. Of course, here is the prob with that. The compression is high for one on a blower. You wouldnt necessaily need that much cam(less comp of course.....a good bit less), different exhaust lobe would probably help....and that converter that flashed right behind the NA motor would probably act a good bit different behind the changed up combo with the blower. Know what Im sayin. So, you either gotta go all the way one direction or the other, or compromise a bit so that it runs good as is, but will allow the blower to strap on with relative easy later without having to totally change it all up.
Give us an idea of what youd like to build. How long will it take for the blower, and how fast are you lookin to go? how much street drivin too? We might be able to come up with something that suits you well with or without the blower.
ok on this combo above. i like what was thrown together. but even if i do this what stops me from just throwing in a head spacer and lowing the compression a little when i do get the blower? changing the cam and adjusting the carb of course
DragTop May 5th, 06, 9:40 AM after a few beers and a lenghty discussion, wouldnt it be wise if i do do supercharging in the to make a more rev happy motor tne a 383. think about it. the bigger crank means more displacement it turning which means rpms will take longer to achieve. i dunno if its the beer but a 355 seems a little bit more logical for a inducted motor. i remember seeing somewhere some one built a 377 using a 400 block with a 350 crank and that thing revved like no tommorow. but i have a 350 block, and im not downgrading to a 327 crank because for that i might as well as beef up the 283 and supercharge that. for the heads should i got with 68cc or 71cc
Scotch May 5th, 06, 10:01 AM Do what I did- Big power on 87-octane. Gas is pricey, y'know..
http://www.compcams.com/Community/Articles/Details.asp?ID=1945664039
~Scotch~
Umass May 5th, 06, 10:09 AM motor i want to build is a 383 3.75 stroke crank 6.125 inch rods 1 inch compression height pistons. good torque and power from the 383 but still rev capable due to the longer rods. what ever you do think longest rod possible.
DragTop May 6th, 06, 10:40 PM compression is the name of the game. 9.5:1 or 9:1 then?
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