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Topic Review (Newest First)
12-19-2012 02:54 PM
vinniekq2 35 tall tires/4.11 gears/turbo 350 transmission/2800 pound car/6500 rpm

first gear=66//second gear=109//third gear=165

5.13 gears

first gear=52 ///second gear=87///third gear=132
12-19-2012 11:46 AM
305 ho cam

After you finish the porting on your heads and deshrouding the 1.94 valves make sure the chambers are 58cc. With 58cc chambers and the .015 thick head gaskets your static compression will be 10.0 and with the Comp cam the DCR will be 8.3. Is there any way to run shorter tires to get the benefit of your 4.11 gears?
12-19-2012 11:16 AM
buggy305 sorry didnt see your last post thank you
12-19-2012 11:14 AM
buggy305 thanks for sharing those articles and all your input i am going to go with the 1.94 valve then go at porting them im sure if i do lots of reaseach and put the time into it i will be happy with the other quick question sence my motor is going to want to rev should i ditch the performer and move up to a performer rpm air gap intake ?
12-19-2012 10:30 AM
buggy305 will i be alot better off with the 1.94 valves and porting with a farly mild cam as opposed to porting the stock 1.84 ? ive been doing lots of reading on porting the last couple days and i think im going to give it a try there really only is one way to learn
12-19-2012 10:08 AM
buggy305 its mostly just for recreation but at one of the local mud bogs they have drags nothing professional just more for fun...i dont plan on being a serious condender id just like to try it and have fun
12-19-2012 10:02 AM
vinniekq2 If you off road for recreation,it sounds like a good combo.If you race,then ?
If I wanted a v-8 off road car,I would use a 305. nice torque with the longer stroke,not bad fuel burn with low power and smaller displacement
12-19-2012 10:00 AM
buggy305 but i dont mind sinking some money and time into it as i think it would be kool to have a healthy working 305 because eveyone hates on them
12-19-2012 09:46 AM
buggy305 it has a th350 newer then 81 (has the eltric plug in ) i bought a cam 218 218 at .50 454 lift 110 lsa trying to decide on going with the 1.94 / 1.60 valves and 3 angle valve job but i dont really want to sink a whole bunch of money into a 305.. mileage is not a concern as it is only for offroad use for exhaust i run upright headers one pipe for each cylinder straight up not sure how they compare to long tube headers performance wise. as for rear gears torq etc i havent decided 100 percent on anything yet
12-18-2012 07:05 AM
vinniekq2 did you make any decisions yet?curious as to what transmission you use in your buggy? I understand the desire for low end torque for off road use. Is mileage a concern?what do you use for exhaust?
12-18-2012 03:46 AM
buggy305 thanks for your input fbird88 i think im gonna stay away from the porting as im not really sure and dont wanna screw them onless anyone can suggest a good book or artical or video to help me get started
12-13-2012 04:37 PM
Originally Posted by F-BIRD'88 View Post
Its out of tune.
This is not a stock crossfire motor. Do not equate it.

try some Champion RV8c plugs in your crossfire 305. and fix the tune. its out of spec and or sucking oil in or he EGR system is faulty
it's not "out of tune" it's in perfect tune.. wideband data loged..
the timing and ccc q-jet are spot on.. factory correct...
with proper a/f % under all loads and rpms
factory 305 in a SS with 8700 miles
12-13-2012 01:11 PM
buggy305 thanks for the responses... i jumped the gun got a good deal on a comp cam and lifters 218 218 at .50 454 lift 110 lsa. its a pipe buggy mainly for sand/mud drags but i will do some touring around old woods roads and trails..stock torq right now but will be geting a stall torq i was thinking a 3000 stall but i didnt no they where usally 500rpm less then what there advertised, as for compression ratio im not sure the heads are comin off hopfullyy this week and going to get checked and get new springs and i will be buying that gasket you recommended. the heads have stock valves no bowl work i just basically ported it to match the intake gasket ( first time playing around with porting just trying learn )
12-12-2012 08:08 PM
Originally Posted by F-BIRD'88 View Post
its a 305. the cr will not be too high. More likely too low
You want it around 10:1. for this camshaft ...Use the thin 1094 gasket.
yes it's a 305, a ping prone 305

my 9.6 crossfire head l82 camed 305 pings like crazy.. on anything lower than 94 pump fuel
12-12-2012 07:54 PM
vinniekq2 Quite a mild cam. Have you figured out your CR yet? tall tires? what kind of car?nice and light though
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