Looking to spend $5,000
#1
07-23-2007, 02:59 PM
Looking to spend $5,000
I have a friend at work that just bought a 87' Monte Carlo.Right now it's at the bodyshop getting painted(Black Cherry),he is going to pick it up next week and he wants to build the motor.He asked for advice but I don't really know much about the older engines,more into the lt1's and ls1's.So I told him I would find a monte carlo forum and try to find something.He wants to spend $5,000 to $6,000 the most.His car is absolutely STOCK,he wants a nice heads and cam package and is looking to upgrade the bottom end.I know that he first has to do the bolt-ons,wanting to get at least 350 rwhp.
Thanks,
Erick
Thanks,
Erick
#3
07-23-2007, 05:25 PM
RE: Looking to spend $5,000
i believe that jegs has a crate engine putting out 405 hp for around $3000 if im not mistaken
#5
07-23-2007, 09:15 PM
RE: Looking to spend $5,000
lookin for power from idle-5500rpm or higher revving?
imo upgrading the bottom end of the engine isa waste ona car making 350hp, i've heard that stock sbc's w/ 2bolt mains can handle 600hp.... but i'm not sure how fast they like to spin.
imo upgrading the bottom end of the engine isa waste ona car making 350hp, i've heard that stock sbc's w/ 2bolt mains can handle 600hp.... but i'm not sure how fast they like to spin.
#6
07-23-2007, 10:45 PM
RE: Looking to spend $5,000
For sure. Even if hes got the 5.0HO, itisnt really worth it. Id just put a 350 into 'er, maybe a tranny rebuild to support this, and possibly a limted slip.. My 86 olds cutless didnt have limited slip. Follow that with a full true dual exhaust. Mine had the 5.0HO and in the short time I had it, in the end it would have been cheaper to do a full engine and trans swap ($3400ish) then to replace the 5.0Ho
#8
07-24-2007, 05:43 PM
RE: Looking to spend $5,000
if your friend has a 305 h.o. (l69) motor he can build that for like 3000$ and have close to 400 hp but if he wants a good street engine to be relieable i got a good build that is go for 345 horse but he will deffenatly need a better trans that that ****ty 200r4 a 700r4 is not bad to start with allong with a set of headers and a true dual exhaust system
#9
07-24-2007, 05:51 PM
RE: Looking to spend $5,000
343 hp 305 Build-up
Short-Block
All 305 blocks have two-bolt main caps and use cast cranks. The Lunati 305 rotating assembly consists of a standard 3.48-inch stroke cast crank turned 0.010- or 0.020-inch under, indexed and balanced. Reconditioned stock rods are fitted with Mr.Gasket SPS bolts. Both crank and rods are supported by Michigan77 bearings, and are kept oiled by a Melling standard M55 oil pump. Silv-O-Lite Keith Black Signature Series pistons (PN 144) were chosen. Manufactured from high-silicon alloys, they combine light weight with superior detonation resistance and (compared to forged pistons) permit tighter wall clearances for improved oil control and quieter operation. On under-4.100-inch bore engines, Silv-O-Lite piston skirt clearances can be set as tight as 0.0015 to 0.0020 inch; yet their rigid skirt design and high-silicon alloy permits running the piston "looser" than a traditional casting if desired--as high as 0.0045 inch. These pistons yielded a 10.26:1 compression ratio, used with a 0.038-inch-thick head gasket, 0.010 piston (down) deck, and a 60 cc combustion chamber.
Silv-O-Lite pistons come machined for Spirolock piston pin retainers. Usually, floating the pin requires bushing the rod. But to keep costs down while retaining the floating pin feature that allows the homebuilder to assemble the rods onto the pistons himself, Lunati runs the floating pins "steel-on-steel," with no bushing. If that worries you, remember that Chevy did the same thing on the '69 Z28 302's and warranteed them for 50,000 miles. The key is maintaining 0.0003 to 0.0005 inch of pin-to-rod clearance, not to mention drilling the rod for pin oiling.
Another depature when using the Silv-O-Lite pistons is piston ring end-gap. These pistons make more horsepower by reflecting heat energy back into the combustion chamber. As a result, the top ring runs hotter and requires more clearance than usual. According to Silv-O-Lite, increasing the ring end-gap does not affect performance or oil control because normal end-gaps are realized at operating temperature. Conversely, failure to provide sufficient end-gap can cause a portion of the top piston land to break, as the ring ends butt and lock tight in the cylinder. Silv-O-Lite provides a "recommended ring gap" chart with its pistons for varying applications that recommends multiplying the bore diameter by approximately 0.0065 to get the recommended ring end-gap on a normally aspirated non-computer street engine. On Lunati's 0.030-over 305 (total bore= 3.766"), the end-gap with the chosen Speed-Pro plasma-moly "file-fit" 5/64-5/64-3/16 ringset ended up at 0.025 inch for the top ring and 0.014 for the second.
Cylinder Heads
Lunati used "generic" 305 iron cylinder heads (casting number=14014416, used on LG4 and HO engines), replacing the 1.84-inch stock valves with larger 1.94-inch valves, but kept the stock 1.50-inch exhaust valve size, treating both to a "good' standard valve job. They also ended up gasket-matching the heads and doing a little bowl work before installing Lunati high-performance springs, retainers, locks, screw-in studs, and pushrod guideplates.Camshaft
[color=#000000][size=3]Lunati installed one of its Streetmaster hydraulic non-roller-tappet grinds that offers reasonable idle quality with just a touch of that performance "rump-rump" so dear to our hearts. At least that's how it behaves in a benchmark 350; the cam is a tad more radical in a smaller displacement motor. To compensate for the engine's small displacement, 1.5:1 ratio
Thread
Thread Starter
Forum
Replies
Last Post
Montes for life
Engine/Transmission/Performance Adders
14
02-01-2012 11:21 AM
