After all the advice (thanks everyone)aboot rebuilding my 305, I think i will go the 350 root. I have a 84 TA ws6 with T5 non computer or air pumps(canadian version). I want at least 270hp. I have an L82 but thats 350hp and I don't want to swap my t5 for an auto.
The t56 is about 4 grand with tax here. None avaliable in the junk yards.( No firebird or cameros either)They get shipped out as they come in!
So to get to the point. What car/engine/year should I be looking for.
Thanks again guys

 

what L82 had 350hp? never heard of that. anyway, why not build your own? I would definitely go with a 1-piece rear main but that will require a new flywheel since 85 and older use a different one than 86+. all 87 and up blocks that I am aware of are machined for roller cams if you want to go that route. Torque is what you need to be leary of on the T-5, horsepower isn't the big deal. I believe the GM goodwrench/targetmaster has about the power rating you want and it's only about 1200 bucks.

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Kyle Osterholt
Okarche, Oklahoma
ASE Master Certified
86 T/A 383 TPI
89 TTA #1002 T-top/Leather
89 TTA #1358 Hardtop/Leather
80 T/A Pace Car
73 Opel GT
73 bronco

 

Single piece rear seals aren't the best block ever made. The smaller bolt pattern can have problems on high HP engines....that aside...since you're only looking for 270 horse the 1-piece would be a better choice for longevity of a clean driveway (doesn't leak nearly as often). Roller cams are nice for higher RPM engines but those can be retrofit into older blocks if need be. Plus the older engines are more readily availble than the SBC that only saw about 7 yrs of production. Anyhow, there is no real point in trying to build down a 350 to hold up to a t-5. Sooner or later it will die of either natural causes (age) or unnatrual causes (death by torque). Is that 4 grand Canadian? Because if it is, that's about what we pay here. You can get them shipped in from the US or take a road trip....you wouldn't have to pay tax on that, right?

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1984 WS6 Trans Am Hartop
Former L69 Car under restoration
1984 Trans Am T-tops
4-bolt main 350, performer intake, headers, Holley 650, T-5, hayes clutch, dual elec. fans and 3.23's.
Daily driver and restoration
13.98 @ 101

 

Got my 350 from a corvette, you might check around some of the speed shops, or performance shops. Never know one just might have a used one, or recently rebuilt one for less. Mine was 600 from carb to oil pan. I did have all my own accessories, dist, ignition box and plugs tho.

 

i ve never heard of the L82 being rated at 350hp. the L46 wich used the same cam (450, 460 lift 224 duration) was rated at 350hp, only because it hade 10:1 and better heads than mid sevents smog vette motor. anyways, just swap out the cam. something in the .420 lift and 214 duration would be good. if you want you could ship you 350 over to winnipeg and i'll deal with it.

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when the green flag drops the bull$hit stops

Curent: 350,performer RPM intake ,650dp, 700r4, headers, 3inch exhast
Spring 01: 406, Comp 282 solid cam, 2400 stall converter, every thing else the same.

[This message has been edited by GOLD85 (edited February 17, 2001).]

 

Hmm. I have about 270hp out of my original '84 after going into the motor, porting the heads, and adding a cam. It's now a 100MPH car that gets 21 MPG! It only cost me $850 to do it, not including the exhaust.

I suggest you buy yourself a whole aftermarket engine, such as found at Speed-o-motive, and install it. Any of their base-model motors will make at least 270HP and cost less than $2K.


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Daniel Burk
http://www.isthq.com/~dan/fcar.html
'84 Trans Am WS6/L69
KB SFC, Moser axles, Torsen Diff. PST suspension, Braided stainless brake lines, Koni struts, 11-inch rear disks,Spohn Adj. torque arm,
Ported 305 heads w/1.94"intake valves, Comp Cams XE262H, Griffen alum. radiator,
Turbine Technologies 2500 stall converter, underdrive pulleys, Crane Hi-6 & more.
1.05g skidpad verified.
New best E/T! 14.039 at 100.82 MPH in 41 degree air at Stanton, Michigan.

 

hey whats up check out this site www.camaroheaven they have everything you could want for third generation...they have low mile lt1's up there! located in new hampshire u.s.a.

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88 camaro rs convetible 92 rims / flowmaster/ hypertech chip/ 3.73 gears/tbi spacer/open elemnt/hollowed cat/shift kit corvette servo/k&n filters/holley tbi unit/nox squeeze/future mods 350 with 400 crank/sub frame conectors

[This message has been edited by jeff88convertible (edited February 17, 2001).]

 

The best 350 blocks have 10/20 under the timing chain, indicating high amounts of nickel and a stronger block. Of course the #1 important thing is if the cylinder walls are thick enough.

 

Will a T5 handle 270 hp? I thought they ware rated to like 250.

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1983 Pontiac Firebird SE
LG4-Based Chevy 400
700R4 Tansmission
Modified 4 Barrel Q-Jet Carb
Accel Super Stock 8mm Wires
Edelbrock Pro-Flo Air Cleaner
3.23 Posi Rear
14X7" Cragar SS/T Wheels
Clarion 45X4 CD/AM/FM Head Unit
100WX2 Amp
2 Pioneer 12" Subs in Custom Box
Third Gen Performance
"A four cylinder is only half an engine"

 

My L82 is rebuilt with some goodies. A freind and I (mecanix by paul) did the work! If the numbers are right it should be around 350hp