Ok, So at the recommendation of some people on this board i recently bought the Summit K1102 cam, and since i have the the stock intake manifold I am upgrading to the Edelbrock Performer EPS manifold and was Curious as to what type of gains i should be looking at?

The engine is a 1983 LG4 out of a truck, It has the 416 heads, The 600 CFM edlelbrock carb Headers, no cats and 2 1/4 (?) inch true dual exhaust.
Its got a 12 bolt rear with 3.55 gears. Auto...Any estimate on my 1/4 mile time?


The car is a 1978 Camaro (around 3500 lbs) not quite thrid gen but you guys now alot on the 305's! Any help is appericated!

 

Low 15's

 

Yea, it'll be pretty lazy. 15 seconds or a tad higher sounds right.
You need a LOT of cubes in a 2nd gen to have semblance of fun, IMHO. 350 is really just the entry level.
They're so damn heavy you need the torque to get going.

 

Sonix is right. And in a 2nd gen a big block is just drop in.

 

The TYPE LT is what I have and it weighs 3550 pounds with ac, With the things done to my car as AC delete no cruise control, lighter front seats (like 5 pounds ha) ect I think it weighs around 3400 which is only 200 punds more than a Z28 third gen, Jeeze its not that over weight its not a 3000gt or anything!!

 

Huh, I understood that a 2nd gen weighed in the 3800lbs range, vs our 3300lb range type of thing.
I'd want to put that on a scale to be sure though. cruise control delete saves maybe 3lbs (I deleted mine), AC maybe 20-30, and seats are probably the same. Either way, in our 3400ish lbs cars a 305 with a few minor mods like that might (MIGHT) make mid 14's.

 

You forgot to ADD the 15-20 lb for the bag of tools we have to keep in the back.

 

Im curious as to where you got the 3800 lbs figure?
Naztyz28's says diffrent http://www.nastyz28.com/camaro/camaro78.php 3550 like I said? Thats what a two tenths of a second diffrent?

 

It also says standing 1/4 mile 16.0 sec @ 91.1mph and that is with the 3504brl 4speed and 3.73's so what do ya think that 305 is going to do in that car?

2nd gens are heavier but not by much and they can be made to go fast I just dont think a 305 is going to make it fast IMO.

I use to own a 1981 camaro and I stuffed a mild 454 truck motor in it with headers, mild cam and Qjet carb with a th350 and 373 posi with slicks on it and it ran real low 13's in the 1/4 mile. I know thats not real fast but this was in 1991 and I built this car for less then $2000 and that includes the price of the car and back in 1991 I was eating new vetts, camaros and mustangs for lunch every day. The big block will drop right in without a problem so that is something ya might want to think about. with a few more cheap mods other than what my car had you could be in the 12's...with a 150 shot of spray you could be in the 11's and be eating new ZO6's and shelby GT 500's for lunch...now would'nt that be fun???

 

LG4 was the car 4bbl 305

LF3 is the truck one

http://www.chuckschevytruckpages.com/enginespecs.html
1981 to 91 trucks:
F 305 V8 4BBL (5.0L) Chevrolet LF3
G 305 V8 2BBL (5.0L) Chevrolet LG9
H 305 V8 4BBL (5.0L) Chevrolet LE9
L 350 V8 4BBL (5.7L) Chevrolet LS9
M 350 V8 4BBL (5.7L) Chevrolet LT9
P 350 V8 2BBL (5.7L) Chevrolet LF5
W 454 V8 4BBL (7.4L) Chevrolet LE8
T 292 L6 1BBL (4.8L) Chevrolet L25
Z 350 V8 Diesel (5.7L) Oldsmobile LF9

http://www.ramblerman.com/blazer/vin.htm

80 and up all were 4bbl aluminum intake and most were all 4416 heads car and truck both, exact same heads

edelbrock intake with 4416 heads is about retarded those 4416 heads dont have the intake runner volume to use all of the runner volume of the edelbrock intake


run a stock aluminum 4bbl intake

get wayyy deeper axle ratio

it will help lots, 3.73 to 4.56 will be the way to go with a small engine like this


i just rebuilt the stock LG4 in the 85 elky we had to have the crank turned for new bearings, and have the block bored to .030 over due to cylinder wall damage it had over 200k on it

and we put in a stock 350 replacement cam


that sucker runs really strong now

i have had a few 305 that surprise ppl some will run very strong

the best 305 i ever had so far was an LG4/L69 block, fresh rebuild milled stock 4416 heads with 1.94 valves installed, stock Z-28 camaro srpings, stock replacement pistons unknown, unknown aftermarket camshaft, stock intake, a 70s model Q jet carb, stock and hogged out '73-80 below spark plug style exh manifolds, 3 speed manual SM326 trans and then converted to th350 with stock converter, and stock 12 bolt 3.73 open axle, in a 68 c-10 pickup, weighing 3800lbs it would take up all the free travel of the front suspension on takeoff, it was not doggy one bit , the rear axle ratio made up for it big time


after a few monthds i swapped in a fresh TRW flat top .030 over 350 4 bolt from a 72 van, unknown camshaft, the same stock manifolds and stock intake and carb and same heads(major compression boost)

was a real fun toy i miss it lots

milled 4416 heads really do make for fun on a 350 haha


high rpm top end it doesnt have alot of though, it is fun for around town general fun lower rpm
around 3-4 grand mainly due to lack of extra intake and exhaust flow