Approx HP from my 305? please give me your best approximation
09-01-2002, 12:20 AM
#1
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Join Date: Sep 2001
Location: Scott AFB, IL
Posts: 465
Approx HP from my 305? please give me your best approximation
I have a stock 305 from a mid 80's camaro in my FB. Here is what I am gonna do. Throw in a .450/.450 lift 212/218 duration (approx) stock heads with new springs. Performer RPM intake and Holley 750 carb, Pro-form Billet HEI. Everything else is STOCK! Will is satisfy me until I get a 350 or 400? The reason I am doing this is because it was smoking and missing real bad, so I took off the heads to have them redone for $110 total, and decided to do the cam just for curiosity, please let me know what you think, thanks, I will let you know how it turns out
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1981 Pontiac FB originally V6, converted to SBC (HEI), Performer RPM, Holley 750 Vac Sec., Chrome Dress up, True Duals
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1981 Pontiac FB originally V6, converted to SBC (HEI), Performer RPM, Holley 750 Vac Sec., Chrome Dress up, True Duals
09-01-2002, 02:31 AM
#2
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Join Date: Apr 2001
Location: Los Gatos, CA (SF Bay Area)
Posts: 84
I'm not sure about your power but I would think that a 750 cfm carb is too big. I would also go for a Demon carb but I'm biased 
Will it satisfy you? I don't know it really depends on the person. For some people a stock camaro is scary to ride in but the next guy you talk to will say its nothing special and just okay.
I used a Proform HEI for a while and it is really nice. For the price they're a great buy. I also heard they're made by MSD so you're not really buying the name with Proform
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Andy
aim: Andyman350
1970 Camaro - 355ci, cam, heads, the normal stuff
pics of me and stuff
Will it satisfy you? I don't know it really depends on the person. For some people a stock camaro is scary to ride in but the next guy you talk to will say its nothing special and just okay.
I used a Proform HEI for a while and it is really nice. For the price they're a great buy. I also heard they're made by MSD so you're not really buying the name with Proform
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Andy
aim: Andyman350
1970 Camaro - 355ci, cam, heads, the normal stuff
pics of me and stuff
09-01-2002, 08:43 AM
#3
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Join Date: May 1999
Location: Mn USA
Posts: 37
Power is in the heads. I'm not sure what you have, but spend your money on a set.
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69 Camaro Z28 "clone" 327 AT
DAYTONA YELLOW WITH BLACK Z28 STRIPES
327 - "461" camel back heads. TRW,Edelbrock,Ultradyne,Hooker
TPI 700r4 automatic transmission
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69 Camaro Z28 "clone" 327 AT
DAYTONA YELLOW WITH BLACK Z28 STRIPES
327 - "461" camel back heads. TRW,Edelbrock,Ultradyne,Hooker
TPI 700r4 automatic transmission
09-01-2002, 09:52 AM
#4
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Join Date: Aug 2001
Location: Dawsonville Georgia
Posts: 23
If this engine was originally a 4BBL from the mid 80's, it's a 155 hp LG4 engine. It has the "305 HO" heads on it. (1.84/1.50 valves).
The cam might pop the power up somewhat.
The carb will kill it though - it'll be a total dog.
If this engine was a 305 with the 2BBL (mid to late 70's vintage) it's the LG3 and the cylinder heads on it would be boat anchors.
The cam might pop the power up somewhat.
The carb will kill it though - it'll be a total dog.
If this engine was a 305 with the 2BBL (mid to late 70's vintage) it's the LG3 and the cylinder heads on it would be boat anchors.
09-02-2002, 04:32 PM
#5
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Join Date: Aug 2002
Location: Teeter-tottering between Brilliance and Insanity
Posts: 1,292
Ok I have a 305 producing quite a bit of power but its not a stock block Ive had HP estimates from legitimate mechanics anywhere from 380-475 read my sig I dont think I left anything out.
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I find your lack of faith disturbing
86 IROC .040 305 TPI
#186 Heads shaved .040 1.98 valves
Shorty Headers 3 in exhaust with Flowmaster
Lunati 259/271 .500/.515 cam
Highly Modified 700-R4
B&M Slapshifter
3.55 Posi Rear
Accel Plugs and Wires
Petronix Flamethrower Distributor
Cragar 15x7 front 15x10 rear
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I find your lack of faith disturbing
86 IROC .040 305 TPI
#186 Heads shaved .040 1.98 valves
Shorty Headers 3 in exhaust with Flowmaster
Lunati 259/271 .500/.515 cam
Highly Modified 700-R4
B&M Slapshifter
3.55 Posi Rear
Accel Plugs and Wires
Petronix Flamethrower Distributor
Cragar 15x7 front 15x10 rear
09-02-2002, 07:02 PM
#6
Registered User
Join Date: Aug 2002
Location: dallas, ga
Posts: 113
750 cfm is way too big, go with a 600. You'll probably end up with 275-300 hp. Not bad at all for a temporary engine.
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Little red light on the highway; big green light on the speedway, hey,hey, hey!
2002 Formula, GMMG cat back /1983 Z28-sold
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Little red light on the highway; big green light on the speedway, hey,hey, hey!
2002 Formula, GMMG cat back /1983 Z28-sold
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