305 Monte motor HP upgrades

Ricketts

Not-quite-so-new-guy
Jan 27, 2020
15
3
Fayetteville NC
I know this is a odd one, but I know plenty of 305 knowledge on here. I have a 64 Bel Air with a 305 Monte motor in it. I just bought a Sniper EFI for it. Well after looking at instructions I noticed it states has to have a minimum 200hp. Currently car is stock 305, edelbrock intake with true dual/no converters of course being a 64 X frame car. Do you guys think a cam along with current combo will get me close to my 200 mark? I truly have zero concern on making a "fast car" I just wanted EFI on my cruiser, I don't wanna 350 swap it, lol.
 
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pagrunt

Geezer
Sep 14, 2014
6,366
113
Elderton, Pa
Before any input, is it a LG4 (135-145 hp) or L69 (180-190 hp)? It's possible but compair cost of a closer to it 350 to what your 305 might need to hit 200 hp. Here's something from Hot Rod on the 305.
 

g0thiac

Greasemonkey
Sep 6, 2020
161
28
I know this is a odd one, but I know plenty of 305 knowledge on here. I have a 64 Bel Air with a 305 Monte motor in it. I just bought a Sniper EFI for it. Well after looking at instructions I noticed it states has to have a minimum 200hp. Currently car is stock 305, edelbrock intake with true dual/no converters of course being a 64 X frame car. Do you guys think a cam along with current combo will get me close to my 200 mark? I truly have zero concern on making a "fast car" I just wanted EFI on my cruiser, I don't wanna 350 swap it, lol.
Cam upgrade and Super Charger will help :)
 

565bbchevy

Geezer
Aug 8, 2011
8,117
113
Michigan
Start with this, the best upgrade for a 305;)
1617835553684.png
 

g0thiac

Greasemonkey
Sep 6, 2020
161
28

565bbchevy

Geezer
Aug 8, 2011
8,117
113
Michigan
Still better than a non turbo V6 lmao.
I totally agree, actually the 305 4 barrel that came in my Monte was a decent engine, it just wouldn't cut it for my need for speed.
 

g0thiac

Greasemonkey
Sep 6, 2020
161
28
I totally agree, actually the 305 4 barrel that came in my Monte was a decent engine, it just wouldn't cut it for my need for speed.
Fr, and not gonna lie I totally get it. Once you drive with a 350, or a big block you don't want to go back lol.

The most fun part about 305's?

Removing the smog and emissions components :ROFLMAO:
 

Clone TIE Pilot

Comic Book Super Hero
Aug 14, 2011
2,540
113
Galaxy far far away
I know this is a odd one, but I know plenty of 305 knowledge on here. I have a 64 Bel Air with a 305 Monte motor in it. I just bought a Sniper EFI for it. Well after looking at instructions I noticed it states has to have a minimum 200hp. Currently car is stock 305, edelbrock intake with true dual/no converters of course being a 64 X frame car. Do you guys think a cam along with current combo will get me close to my 200 mark? I truly have zero concern on making a "fast car" I just wanted EFI on my cruiser, I don't wanna 350 swap it, lol.
A cam will help along with a roller timing chain. Headers help a good bit too. Biggest power improvement would be 059 305 Vortec heads which can easily bump a 305 up to the 300 hp mark.

Many of those aftermarket EFI kits including the self learning ones are not designed for bone stocker engines. The designers expect such systems to be used on at least mild performance engines with some cam and compression. That is probably why they recommend a minimum 200 hp.
 

Ricketts

Not-quite-so-new-guy
Thread starter
Jan 27, 2020
15
3
Fayetteville NC
Before any input, is it a LG4 (135-145 hp) or L69 (180-190 hp)? It's possible but compair cost of a closer to it 350 to what your 305 might need to hit 200 hp. Here's something from Hot Rod on the 305.
Sadly not sure on the LG4 or L69, is it stamped on it anywhere? I know the block casting number#14010202
I totally agree, actually the 305 4 barrel that came in my Monte was a decent engine, it just wouldn't cut it for my need for speed.
Oh I totally agree, luckily I have "fast" cars. This Belair is just a cool cruiser for me, I don't care about it being fast.
 
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