Thread: high performance 350 chevy buildup???

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Originally posted by nitrus1
tim im going to give what i have in my dirt race car and bleave me its not a hole lot but its one bad to the bone motor.. here it is

350 4 bolt block .030 over ( 355 ci )

cast steel crank 350

heads 350 chevy 96 truck vortec casting 10239906 and 12558062 64 cc they need to be fitted with 7\16 screwin studs and guide plates ported and polished. .650 lift duel springs no dampner.. 2.02 int 1.60 ext you can get the springs from the cam company Vortec "L31" 350 SBC heads (PN-12558060)and 12558062 is about $485.00 cheper if bare

speedway valve covers tall 910-17158 you will have to cut one side of the fins in the inside on covers so they will fit over the stud gurtals

pistons are speed pro forged alum //no hyportec floting pins

total seal plasma coated rings

rods are eagle i beam sir rods or the h beam i have I beam rods

the cam that i use is ful rollor comp cam 301-311-06RRD.95 speeyway catelog part number is 251-19134 heres the specs dur 301--311 adv 265--275 at .050 106 cl lift .614--.615

speedway roller lifters 915-11515

crower 1.6 rockers speedway part 290-73641

the u stile moroso stud gurttals any other the center vortec bolts wont fit

use oil restricters speedway part 915-120-RLR

intake Super Victor" aluminum, high rise, open plenum race manifolds edelbrock
PN-2913

one thing to remember and dont forget this one dial in the cam if you dont have it where the lifters are level on number one and the piston is at tdc it will hit and bend all the ext valves i no from exp the cam specified in this build. is if you install it streight up its like 4 deg retarded it was made back when they didnt grind the advance in the cam.. piston to valve clearce is a must to check...

carb is a 650 dubble pumper

oh yea i have a 2 in 4 hole spacer plate

i had this motor dynowed and it was 492 hp at 6800 and 468 fpt at 4300

trust me its a neck snapping motor its cost is around 2100.00
yes that sounds like alot but you wil pay almost that much for a stock rebuild for yout daly driver if you shop you may get the parts chepper

ps i run this motor in a imca mod and fun it hard up to 7100 rpms

and questions contact me profab motorsports

.First if you are running this in an i.m.c.a. mod. you are cheating.The rules state flat tappet cam only.How do I know you are asking ?Our car finished 5th at nationals this year at Boone Iowa.Heads are to small.A cast steel crank?I give up !!!