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The build started last year on Halloween when I picked up a blown up 350 for just $100. After cleaning it up I dropped it off at the Machine shop along with a Set of Black Friday Special Speedmaster bare cylinder Heads for the block work and head work. A week later it was ready and I actually had this thing pretty much done by new years but it took until July to get it back to the Machine Shop and on the Dyno,.
The block was decked 0.010 and the heads were milled down to get 64cc Combustion chambers. Cam is the the Lunati Voodoo 272/280 Hydraulic Roller with Hylift Oldsmobile Hydraulic Roller Lifters. Not that it helps with power but I'm running a 330 crank that was nitrided by Mile High Cranks. The intake is an Edelbrock Perfromer RPM that I ported to match the BBO heads and the carb is a 670cfm Holley Street Avenger. Headers are Gbody Hooker Super Comps. I think it would have made more power with a 750cfm carb but the 670 is what I had. No fancy oil pan but I am running the 6 quart Thornton Muscle car pan; I have an 8 quart but it drags on the car in my car.
Nice, very good power for a 358. Actually there is three 358 builds going on, two with 330 cranks. I need to save my Loonies for the new Edelbrock cylinder heads, when and if they come out.
Wow this is sweet, I have a 358 build going on as well lol, but I wont have the compression that you guys have. what was the HP and TQ on the build, Im use to seeing the sheet presented in the regular way lol. But great job on your build, it sounds amazing.
Read about it here if you wanna wade through the longest build lol. It seems like its hard to find a good machine shop in Canada after reading what Christian went through, my guy not listening to me when I said I wanted 65 CC heads, my deck didnt look cleaned up like yours, my port matching not getting done, I'm just to the point where I want my block home now rather than have him disassemble and do what I said, my time and patience has worn out. I really wish I went on Dales waiting list for my build.
Yeah Dave, I felt the exact same. It has been a frustrating experience for sure. I believe his numbers were 435 HP and 472 TQ, very nice. He should be mid 9 to 1 compression, not sure on all the cam specs.
Yeah Dave, I felt the exact same. It has been a frustrating experience for sure. I believe his numbers were 435 HP and 472 TQ, very nice. He should be mid 9 to 1 compression, not sure on all the cam specs.
That is really impressive numbers, great job on the build for sure
Last edited by skyhigh; September 9th, 2023 at 06:12 AM.
Reason: Spelling
Bummer that you guys up North have difficulty with your machine shops. The guy I’m using is awesome he will do anything you ask and he does a good job. I think the valve job he did on my heads was a huge help. I also think my port work on the intake was good for some HP too.
Olds307_403 nailed it I’m at mid nines on CR, I think it was something like 9.6 or 9.7:1 when I ran the numbers. I could have gotten away with an extra .005 cut on the deck to boost CR higher. I really wanted more compression but with the result I got I’m not gonna complain.
The "358" builds are utilizing the newish Mahle Powerpack Oldsmobile 4.100" pistons. They utilize a 1mm ring pack vs the old school 5/64" thick rings. Using the thin rings, proper plateau finish hone job and fit to Mahle clearances is good for quite a few extra HPs.
That's right, there's not 1 but 2 358 builds going on simultaneously! This combo might get popular. https://youtu.be/l7WL-59eqpE
The build started last year on Halloween when I picked up a blown up 350 for just $100. After cleaning it up I dropped it off at the Machine shop along with a Set of Black Friday Special Speedmaster bare cylinder Heads for the block work and head work. A week later it was ready and I actually had this thing pretty much done by new years but it took until July to get it back to the Machine Shop and on the Dyno,.
The block was decked 0.010 and the heads were milled down to get 64cc Combustion chambers. Cam is the the Lunati Voodoo 272/280 Hydraulic Roller with Hylift Oldsmobile Hydraulic Roller Lifters. Not that it helps with power but I'm running a 330 crank that was nitrided by Mile High Cranks. The intake is an Edelbrock Perfromer RPM that I ported to match the BBO heads and the carb is a 670cfm Holley Street Avenger. Headers are Gbody Hooker Super Comps. I think it would have made more power with a 750cfm carb but the 670 is what I had. No fancy oil pan but I am running the 6 quart Thornton Muscle car pan; I have an 8 quart but it drags on the car in my car.
can you post the other printout with the actual numbers through the RPM range? graph is hard to see.
Share some of the other details of the car and combo, if you dare😉. It is a mid 80's 442, correct? It still has the 2004R and what converter?
Yes good memory! The car is a 1985 442 currently has a Jegs 2004R "Stage 2" and a cheap "Torco" 1800-2200RPM stall (verified brake stalls at 2200 RPM) I did install the Bowler Lock Up kit and bracketry for the Sniper EFI. I'm running Hooker Supercomp long tubes and the Pypes X-Pipe exhaust. Rear end is the 8.5" 10-Bolt with 3:73s (factory) but with an Eaton Posi installed.
lots of tubular suspension upgrades and the S-10 Blazer brake upgrade.
(carb/ign for Dyno only)
I'm currently running a Thornton MC Oilpan that cost over 3x as much as the 8qt one and it's WORSE quality but doesn't drag on the ground. It's been really Pi$$ing me off because the way it's made it leaks at the lip seals, it'll only not leak if you use copious amounts of RTV on those rubber lip seals. It's also crooked! All in all my opionion on Thornton MC is they remarket cheap Chinese Junk at a huge mark up.
Last edited by rogue_ryder; November 1st, 2023 at 04:00 PM.
My G body had no weight savings, if the A body numbers are accurate, talking maybe 100 pounds. Yes, there is the gear ratio advantage. One of the reason new cars are so fast.
My G body had no weight savings, if the A body numbers are accurate, talking maybe 100 pounds. Yes, there is the gear ratio advantage. One of the reason new cars are so fast.
Until I see a weight, doubtful. The only weight gain over a 442 is the Brougham pillow top bench front seat. I had an aluminum intake, shorty headers shaved another 20 pounds. Plus 4 factory 14" aluminum rims. I had a good size hole cut in the hood. Plus the 8.5" rear and drive shaft weigh more than the 7.5". The better first and rear gear are the only real differences. Almost guaranteed Dave's car has no power anything, 80's 442 usually everything,
it adds weight.
Last edited by olds 307 and 403; November 2nd, 2023 at 11:40 AM.
Looking at that dyno sheet is the torque not ideal until its around 4grand, wouldn't a higher convertor be in store here? I'm just trying to learn how these parts work with one another or with the OP having a 4 speed with steep gears needed a lower convertor?
Yeah, the gearing helps need less stall at launch. How a higher stall behaves at light throttle depends on the quality. You Hughes will act nearly stock until you step on it, my Hughes 2500 did. Mine actually flashed stall at 2500 rpm. You will be just under 3000 rpm with a 3.42 compared to 2500ish at 60 mph. This depends on torque converter slippage and tire size.
Looking at that dyno sheet is the torque not ideal until it’s es the around 4grand, wouldn't a higher convertor be in store here? I'm just trying to learn how these parts work with one another or with the OP having a 4 speed with steep gears needed a lower convertor?
Yes on the TQ coming on later , but this set up has a good overall first gear multiplication.. 10.22
you can get away with a tighter converter in a street if you have that
but ,if this guy wanted to build it for maximum off the line acceleration, like a dedicated drag car, the converter would be picked to stall around its peak TQ
September 8th, 2023, 04:11 PM
