Hello all,

I would like some desktop dyno or just educated guesses on my engine's tq/hp numbers please.

I will list the engine as it is now going into the car, and as it will be after my mod list is installed. ( thoughts/suggestions on my mod list always appreciated and welcomed)


1987 Trans Am
355 (3970010 block 882 heads) yes i know they sucketh, but temp heads
700R4
2.73 gears

A little background on the block,pistons,crank. I bought them off a dirt track racer: block freshly honed from shop, crank turned, pistons flatop with 4 valve relief hypereutectic (speed pro or keith black not sure which) so other than head chamber size, i dont know compression of engine.

ok, here is how engine is now as its being dropped into the t/a

.30 over 350 4bolt main block
882 heads 76cc chamber 194/150
edelbrock cam 2102 204/214 @ .050 .42/.442 lift
edelbrock intake 2101 dual plane
edelbrock carb 1406 600 cfm


And after mods (if not relisted then same parts are being used)
305 heads 194/150 (160 maybe?? will it fit) 58cc chamber
Crane cams Duration @ .050: 218° Lobe Separation: 106°
Gross Lift: .450'' RPM Range: 2200-5200
Holley Spreadbore 650 cfm

I Plan on keeping the stock converter my thinking is the weight of the car along with the 1st gear in the 700R4 it should have no probs hitting the 2200 rpm from the line without a stall. (car is for street only, i want it quick but i dont care if its fastest thing on the road, as long as it feels good to drive without any boggyness)

Ok toss the numbers and ideas at me
did i figure up a good combo? or am i a fool? the posts will tell and my list will change as we go.


Thank You,
Dave

 

882 heads, the generic cam you're paying too much for, flat-tops, Carter carb; 225 HP @ 4200, 360 ft-lbs @ 3400.

305 heads with 350 valves and moderate bowl work, same cam, same pistons, same intake, better carb; 265 HP @ 4600, 365 ft-lbs @ 3700.

Same motor, the better cam: 300 HP @ 4900, 360 ft-lbs @4100

If you really want that particular cam, don't get it with the Edelbrock name on it. Or any other "Edlebrock" cam, for that matter, they're all industry-standard generic public-domain type grinds. Maybe they all come from a company named Commodity Cams, I don't really know. Buy it from Melling, or Speed-Pro, or Perfect Circle, or any of a hundred other sources for cheap generic cams; no point in giving Vic $50 or however much it is nowadays more than you have to give somebody else for the identical same thing. I like some of his stuff OK, but not enough to just want to pay a $50 cover charge.

 

You left no indication of what you are using for exhaust. Just an FYI, I ran into an oil dipstick clearance issue trying to use stock exhaust manifolds from my Monte SS with the 3970010 block. If you do not have headers yet, better start looking for some...

EdB

 

edit: unacceptable content removed

 

Thank you all for the quick responses,

RB83L69- I agree with the "name buying" i got lucky and bought the carb,cam/lifter set, and intake as a set new for 350 dollars so someone else padded vic's pockets for me on the figures you provided me, i like the head change numbers, the compression boost always helps, but i noticed that the upgrade cam i picked has increased my hp but killed my torque curve, any suggestions on a cam profile? i would prefer to have my peak torque in the 3500 range, and balanced with the hp even if the hp figures have to drop a little. (290-320 hp @ anything up to 5k and torque 350-375 @ 3500 or lower) now is this possible with my parts and a dif cam? would also like the cam to have a 108 ish centerline so the engine makes decent vaccum but isnt smooth at idle. I rarely rev my engines to 6k so the upper rpm power isnt needed quite as much.

MonteCarSlow- I am using the stock manifolds for now, going to change to headers later when i do the heads (outta cash). me and my partner spent the better part of 2 hrs today and with the help of a tubing bender actually routed the dipstick up between the manifold and head and looks/functions quite well. will get a lokar or something like it later when i go to headers for the eyecandy.





Dave