Thread: Serious Performance Nuts Help!!

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ok tell me what you guys think...I really like this idea

305 v8 bored .060 with a flat top piston, a high end rod, a set of 305 truck heads, a mild rv style lunati cam ( or i might put a REAL fat cam in)...this is where it gets fun


fabricate a dual sided intake manifold, on 1 side a supercharger off of the 3.8L cars (tbird, the buicks, ect.), on the other side, a supercharger identical to the other one...twin superchargers...here's where it gets REAL fun

mechanical fuel injection, running methanol

I know, i know...why that much power on a little engine with methanol injection? because its different thats why, because the look i get when people see that i blew their 454 out of the water with a 305, because of the satisfaction i'd get off of making this much power on a 305.
I'd also put MSD stuff on it (ignition system, timing stuff, ect.)
Lemme know what you guys think!

Nobody has ever been successful trying to make mechanical fuel injection work on the street, particularly not with alcohol.

Blower Drive Service can convert your mechanical to electronic using all the mechanical pieces, so it still looks hot.

what would it accomplish to make it electronic? i dont have anything to plug it into...There wont be a computer on the car, thats why i dont just by EFI...

I really dont need info about the injection...i just thought id throw that in there...i really need to know about how good the superchargers would work

i can also run gasoline, it doesn't matter...we're just thinking about going drag racing with an alcohol injected truck...

You could run 2 Eatons, guys have run 2 blowers before. Just build a good, stout short block.

Read about the Eatons here under Roots type blowers....
http://streetmachinesoftablerock.com...topic.php?t=81

ok, what can i do as far as fueling this engine...305 bored .060 flat top piston, the mild lunati cam that i posted the stats on in a differnt post, and the dual superchargers? i have an idea but idk if it would work

instead of splitting the intake down the middle longways, i could split it crossway and run a dual carb style intake and run 1 supercharger per carb yes? lemme know.

Sure, in theory it'll work.

If you're goin with carbs, you'll need 8:1 to 8.5:1 to make it work, so you may have to re-figure on your flattops and use dished pistons.

Here's how to figure compression ratio.....
http://streetmachinesoftablerock.com...opic.php?t=124

hmm what about using high octane fuel? for example, 93 octane? would that work? I can also get 110 octane from the pump but its almost 4 dollars a gallon... i would rather not go there

If i need to change pistons thats not big deal...it'll just save me money in that area too

If you're doing it for different you're way too late. Here's Dobbertins J-2000 about twenty years ago. And it's twin turbo'd as well as the twin Magna Chargers.............yes, it ran.

yep ur not gunna catch this guy!!!

I've got close to the same set up your thinking. My 305 is bored .060 over with flat top pistons, crane cam edelbrock manifold with 600 cfm carb and just with that I have to pump 93 gas. That combo is putting out a little over 290 HP so with dual blowers, your talking about one hell of alot of power from a small block but as tech says, It can be done.

guys im not stupid, i know dual chargers have been done before and i know that it was done for the first time a VERY long time ago...i already know that...what im talking about when i say "different" is that no one in my town has this setup...they all think 350 or bust and thats not true.

I really need help fabricating the intake for a dual supercharger setup...any input or maybe even a DESIGN for one would be a lot of help...also what are my options for this setup as far as fuel goes?

mechanical injection is one option but what are the others?

and as a matter of fact it IS different...how many street machines out of the millions of them out there can you say are double charged with a custom intake? ok now take that number and sort out the number of LITTLE v8's that have had this done and i bet you don't have a very large number...

anyways, i haven't committed to this project yet, i just wanted to throw it at the club and see what support and info i could get on it. I know a twin charged engine makes a ton of power but i could REALLY use a design on what the intake is supposed to look like and what type of fuel system i would be best off using. thanks!

".....when people see that i blew their 454 out of the water with a 305....."

"....... Just build a good, stout short block......"

Tech hit it right on the head. Not trying to burst your bubble but now's time for a reality check. How deep are your pockets? Depending on your boost levels your looking at things like: steel crank, the good rods you mentioned, line boring, 4 bolt main caps, premium forged blower pistons (for a less than popular motor), final honing with a deck plate, O Ringing the block, HD oiling system, premium rod bolts/main studs, and a bunch of other little items I'm overlooking, and thats just the bottom end. The alternative is to keep putting engines under the blowers.

u guys are right...im in over my head on a dream...i just need to stop talking nonsense and just rebuild the wimpy 305 that is in the truck and make it a good daily driver and just stop talking hotrod stuff.

or maybe a good stout 305 and one supercharger on it...or blower/turbo or supercharger/turbo

i dunno prolly just need to stop dreaming about going fast and just drive the truck how it came from the factory.

There's nothing the matter with deaming, if the truth be known it's start of most projects. Some just occasionally need to be put on hold.

well here is what i have:

$1000

30 yrs drag engine building experience helping me (girlfriend's dad) he told me if i came up with what i want, he'd help build it but he wouldn't help me with an idea.

2 305 blocks, 2 305 cranks, 1 set of factory 305 truck heads, 1 set of factory pistons, rods, ect. Factory TBI setup...(one 305 is assembled and running in the truck but its getting tired)

i want to use the 305, make good torque and hp, have a very sexy street machine, but at the same time not be in one of those 350 or bust guys.

I have really no rules on this project other than it has to make good power, it has to be a 305 (or a version of it) and it must be streetable. Lemme know...

also incase of any confusion, i was talking about running 2 small chargers, like the chargers that came factory on the tbirds (3.8 v6) together the two chargers make about the same amount of boost as 1 charger that is meant for the engine...