carb manifold cam combo 4 318

deadkelly · 10-14-2007, 12:55 AM

iam after budget bolt on horse power for my rebuilt stock 318 2bbl .i don't want to take off the heads or take out the 904 for a stall converter,i have twin 2 1/2 in exhaust .iam saving for a crate motor ,this is just a quick fix for about 12 months still must go as hard as possible.if hp will be down to much i will use a stally and fit valve springs and bigger cam. i also have 3.55 lsd diff center to go in.

deadkelly · 10-14-2007, 04:46 AM

just spoke to a mate who recos moto bike engines ,he says iam wasting my time if i don't put a bigger cam ,stall converter at least mild port job,springs, carb & manifold.

polyhead_318 · 10-24-2007, 08:14 PM

why don't you step up to a 4bbl? or a high cfm holley 2bbl, they make 'em in 350cfm and 500cfm.

SixtySixDeuce · 11-05-2007, 03:28 PM

What is the engine in and what kind of emission equipment does it have? This stuff makes a huge difference. Late '70 truck 318's are not smogged down and have decent heads, so they can benefit from adding a 4 bbl and a mild cam, while the emissions crap and heads on an 82 Fifth avenue really can't make use of the extra flow.

Most 318's run flattops with 8.4 or 8.5 CR's, but the heads vary wildly. Milling them 0.030" or so (any more will require adjustable pushrods and milling the intake), porting and port matching, a small CFM (500-600) 4 barrel and a 360 truck cam will give a decent increase. This is exactly what I did with my '78 aspen (thought he heads are 593's off a '76 truck engine). Cost me about $700 total ($260 for the Edelbrock 600, $120 for the Napa cam & lifter package, $100 for the head gasket set/timing cover gasket set/timing chain, $100 to have the heads milled, and about another $100 in misc small parts. I did the porting and port matching, and I already had a police interceptor 4 bbl cast iron intake (also got ported).

66coronetgirlie · 11-05-2007, 09:37 PM

I have a Holley 350cfm 2bbl for a 318

want it? lol

deadkelly · 11-07-2007, 02:16 AM

just bought a 440 , that should do the job.

deadkelly · 11-07-2007, 02:30 AM

i just bought a 440 ,it'll ooze torque. haha thanks 4 the reply

10-14-2007, 12:55 AM	#1 (permalink)
deadkelly Member Join Date: Oct 2007 Location: queensland Australia Posts: 35	carb manifold cam combo 4 318 iam after budget bolt on horse power for my rebuilt stock 318 2bbl .i don't want to take off the heads or take out the 904 for a stall converter,i have twin 2 1/2 in exhaust .iam saving for a crate motor ,this is just a quick fix for about 12 months still must go as hard as possible.if hp will be down to much i will use a stally and fit valve springs and bigger cam. i also have 3.55 lsd diff center to go in.

11-05-2007, 03:28 PM	#4 (permalink)
SixtySixDeuce Shooter Join Date: Oct 2007 Location: Colorado Posts: 17	What is the engine in and what kind of emission equipment does it have? This stuff makes a huge difference. Late '70 truck 318's are not smogged down and have decent heads, so they can benefit from adding a 4 bbl and a mild cam, while the emissions crap and heads on an 82 Fifth avenue really can't make use of the extra flow. Most 318's run flattops with 8.4 or 8.5 CR's, but the heads vary wildly. Milling them 0.030" or so (any more will require adjustable pushrods and milling the intake), porting and port matching, a small CFM (500-600) 4 barrel and a 360 truck cam will give a decent increase. This is exactly what I did with my '78 aspen (thought he heads are 593's off a '76 truck engine). Cost me about $700 total ($260 for the Edelbrock 600, $120 for the Napa cam & lifter package, $100 for the head gasket set/timing cover gasket set/timing chain, $100 to have the heads milled, and about another $100 in misc small parts. I did the porting and port matching, and I already had a police interceptor 4 bbl cast iron intake (also got ported). __________________ *Wanna make those folks with the rice rockets close thier mouths? Just mention the word "torque" and watch them shrink away.*

11-07-2007, 02:16 AM	#6 (permalink)
deadkelly Member Join Date: Oct 2007 Location: queensland Australia Posts: 35	might put it on my 440 just bought a 440 , that should do the job.

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10-14-2007, 04:46 AM	#2 (permalink)
deadkelly Member Join Date: Oct 2007 Location: queensland Australia Posts: 35	just spoke to a mate who recos moto bike engines ,he says iam wasting my time if i don't put a bigger cam ,stall converter at least mild port job,springs, carb & manifold.

10-24-2007, 08:14 PM	#3 (permalink)
polyhead_318 Member Join Date: Oct 2007 Location: cali's valley Posts: 34	why don't you step up to a 4bbl? or a high cfm holley 2bbl, they make 'em in 350cfm and 500cfm.

11-05-2007, 09:37 PM	#5 (permalink)
66coronetgirlie Member Join Date: Oct 2007 Location: east bay, CA Posts: 59	I have a Holley 350cfm 2bbl for a 318 want it? lol

11-07-2007, 02:30 AM	#7 (permalink)
deadkelly Member Join Date: Oct 2007 Location: queensland Australia Posts: 35	i just bought a 440 ,it'll ooze torque. haha thanks 4 the reply