87 GTA Trans Am

81 Corvette 350
350 Bored .060 over.
Lunati Camshaft 284* Dur .458" lift
Edelbrock 750 CFM carburetor
Edelbrock Performer RPM intake manifold
Mallory Distributor with Vac Advance
Accel Super Coil
MSD Super Conductor wires 8.5mm
Hooker 2055's 1 5/8" primaries 3" collectors
3" Y-pipe
No Cat
3" Edelbrock Exhaust
Dual Electric Fans
Bilstein Shocks
Tubular LCA's
Stock 700R4


I have many more mods, these are the only ones that I know that may affect ET's

Let me know how much HP and what ET's you estimate please.

-Cale

I'd guess mid to upper 14's. I see no mention of gear ratio, and it looks like you have a stock TQ converter. Street radials?

3.42 gear ratio. Limited slip (ls1 rear end)

Stock TC for now

Am I blind? I'm not seeing cylinder heads... It's REALLY tough to guess without that bit of info..?

whatever came stock on an 81 vette.

ok... I have no idea what that is..?
882?
What's the part number for that cam? duration @.050" is what I want...

lunati 0016
The engine stock is 190 hp 8.2:1 compression

heads arent good heads, and compression is a bit low for my taste but should run better than stock. somewhere in the 14's but hard to say. Depends on weight/track conditions etc. That cam is a nice step up from the stocker i'm sure, but the heads kill that motor and so does the compression

Heads are definately my next swap.
I was thinking about putting on a set of 416's.
I have a set of aluminum corvette heads but there is a hairline crack in one of the water ports. Wonder how much it would cost to fix them.

I also have a 150 shot of nitrous... but I did not really want to factor that in...

Think the nitrous would put me in the high 12's or low 13's?

150 should drop a full second and add 10 mph at that level. may see high 12's but depends on how well you can get that car to run on motor. stock TC is hurting abit

what stall should i use?

I got my 305 down to 14.4 with a smaller cam and carb, but 3.73 gears and a 2000 stall. My guess is mid-low 14's @94+mph, and mid 12s @105+mph on the 150 shot.

not sure where that cam is gonna come alive but anything in the 2500-2800 range generally works for most mild to somewhat street/strip cars. Works well on the street to so thats nice.

mid 14s vettes are pretty light step it up with 3.73 gears should be low 14.s

I see it says bored .060" over... did they use stock dished style pistons when it was rebuilt? I think the gear is fine for a street car, but it could use at least a 2500 converter and a set of sticky tires to make it all work together.

You have a baby cam, I'm sure it's extremely well mannered. I would step it up to something slightly larger when you install a better set of heads. Even a set of 64cc heads with a thin gasket would knock it up around 9.5:1 static compression. Compression = power. That's one of the secrets to my success with my little 347" LS1. I'm right at 12:1 static, and 8.9 - 9.0 DCR. I run pump gas, and the car is streetable. It runs a good amount better than a lot of heads/cam cars in this area because of the attention to detail. Matched parts are where it's at.

I'll say high 14's, but you may be able to dip into the 13's with the right gearing and perfect tune. Those heads are best left for scrap...