did the carbed 305 LG4's in the 87 iroc make good power? what should i expect when i drop this into my 88 power-wise? are they worth extensive mods?

 

not really, expect about 170 HP

IMO you should extensively mod a 350 instead of a 305, you'll be happier in the end

 

The only place you should "drop" this motor in into a lake

 

For a 170 HP motor it would be a waste of time & money even if it was free.

 

What engine do you have now? An LG4 will put you at around 170 hp like they said...and make you a low 16 sec car. Sorry bud.

-Rippin

 

guys its not like im planin on racin vettes or praying for 700hp, im talkin 350hp.......i plan on heads/port and polish, intake, headers, cam, ignition, rear end, trans, ya know, basic **** like that, its not gunna be a drag car or nuttin, im just lookin for some power at the foot..and besides when i start makin more $$$ in a few years, that sucker is outta there no matter what kinda power it makes at the time, cause when i can spare 6 or 7k im goin either 383 or big block, so i dont need a million hp yet

 

350 flywheel hp, let alone rear wheel hp will be pretty tough with a 305. I geuss you've been reading up on this thread though:
http://web.camaross.com/forums/showt...p+305+can+done

Looks like 250 is easily attainable. Good luck bro, when's the date for the swap?

-Corey

 

[QUOTE]Originally posted by Rippin92RS
[B]350 flywheel hp, let alone rear wheel hp will be pretty tough with a 305. I geuss you've been reading up on this thread though:
http://web.camaross.com/forums/showt...p+305+can+done

hardy har har, believe it or not, 305s r highly underestemated....there are plenty of ppl around here that push 350hp with the stock 305.

i dunno when its goin in the car yet, my couzin was gunna help me with it but he pussed out cause i wouldnt sell him a stereo, all i need is a second set of hands from someone who knows what they are doing and she's goin in

 

Use all the same parts as in my sig and you'll be pushing 300 hp easy. What's more, they can all be used on a 350 when that day rolls around.

 

power costs its just a matter of how much you want to spend. 275-300 hp out of a 305 is no major task just basics. 10 to 1 comp. pistons, good set of heads that will breathe (350 heads with 1.94 intake and 1.50 exaust will work), a cam with around .488 lift, 650 cfm carb, good dual plane intake like a edelbrock performer rpm, headers and exaust, roller rockers, roller timing chain or gear drive, good hei system. this should put you at around 275-300 at the flywheel easy. most people underestimate the 305 but its actually nothing more then a 350 except it has a smaller cylinder bore. as for 305's not being able to make power my neighbor built a 305 making 600 hp at the flywheel a couple years ago but he did dump a lot of money into it.

 

i actualy have a set of 350 head but i think they are for a 84 or so from a scottsdale, i doubt they will work, and ive been told that 350 heads would drop my compression and kill my power, but ive also been told that they will gain power.......?

 

True, most 350 heads have 64 or 72cc combustion chambers, while the 305's is much smaller (58 I think?). Usin the tree-fitty heads will give you MUCH lower compression. Lower compression = less power.

 

naa he could pull a high 15

 

350hp with a stock 305.

Sure.

 

youll need to get pistons that have about 10 to 1 comp. with 64 cc heads which will have around 9 to 1 comp. with 72cc. they arent all that hard to find i think just about any performanc parts store will carry them. but theres also the downfall of 305 heads using smaller valves then the 350 heads.i cant remember off the top of my head but i think the 305 heads use 1.84 intake valves with 1.50 exaust where the 350 heads 1.94 valves and 1.50 exaust. youll actually get more fuel and air mixture into the cylinder which also makes more power to.