well i didnt even drive it a week an the 305 is blown up.i was drivin it home from work 2 days ago an it just went to hell.has one helluva rod knock prolly more like 8 rod knocks {engine lost oil pressure}anyways i bought a 350 from a 76 chevy pickup for 125 bucks an it ran .im gonna freshen it up an throw it in tha 82 trans am.my questions are.about how much hp an tq you think ill have with,demon 625 carb,edelbrock perf rpm intake,edel perf rpm cam,1.6 roller rockers,headers,an about 9.5 to 1 or 10 to 1 compression,btw im gonna bore it too a 355.second question is,do you think the factory 4 speed will handle the 355's power?an my last question is how hard is it too convert a stick shift car to a 700r4 tranny.im gettin sik of shifting lol

------------------
1989 pontiac firebird{trans am clone}
maui blue hardtop{new paint}
406 pontiac engine
demon 750 carb
crane roller cam@ 240 intake 248 exhaust
crane roller lifters & rockers 1.6 ratio
edelbrock performer rpm heads and intake
dynoed 457hp@5300 rpm& 503lb ft of tq@2490rpm
all the dressup stuff
12 bolt rearend from a 68 maro,3.73 gears now
17x9.5 zr1 rims up front
17x11 zr1 rims in back
275/40/17 up front
315/35/17 in back
rims are silver
gm 6 speed transmission
centerforce clutch
pioneer cd deck,and changer
infinity 6x9's and 4x6's
2,profile california amps 640sx
2 12" pioneer subs
prolly 100 things im forgetting lol
o yuh its hella fast

 

Mark, is that a crate 406 you have, or did you build it? Is it 2 bolt mains?

 

Slap Vortec heads on the 355, and use the Vortec Perf RPM intake from Edelbrock w/ a CompCams 268 Xtreme energy cam and you'll be making between 360-400 hp depending on compression and tune...(NUMEROUS Magazine buildups all in this range) Can't beat the Vortecs for cheap performance w/ their $420 price for the pair complete. (You will need self aligning rockers and center bolt valve covers too though. You can get stock style stamped self aligning 1.5 rockers for around $50 from Jim Pace Chevy and probably numerous other places, I already had the valve covers but you should be able to get some for fairly cheap as well).

You'll be alot happier w/ the engine if you ditch the stock heads in favor of the Vortecs... The T5 tranny won't hold up long behind a stout 350 though, but it sounds like you're tired of the manual anyway. A mild rebuilt 700r4 will handle the power just fine.

------------------
Ray87Z
-Vortec headed 350.
86 IROC w/ a cammed 305 TPI.
Formerly Ray86IROC.
www.inter-scape.com/Ray


[This message has been edited by Ray87Z (edited May 08, 2001).]

 

If you want a 700R4 you will need to run lines to cool it from your radiator, you will need a different crossmember and another driveshaft. Those are all pretty cheap though. You will also need a flexplate. If you need a new 700R4, I have a freshly rebuilt one out of an 87 GTA I'll sell you for $250. Let me know.
Chris