Engine build for a Supercharged 390
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From: WA
Originally Posted by EgoMan
I would love to charge a 390 or whatever....but I sont wanna have to buy a forged crank, rods and pistons to do it...but if all i had to do was put forged pistons in...and run 6psi..im cool.
Lead Driver
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From: Ohio
Well, you could run a stocker like me....but just don't expect to be able to abuse the snot out of it. I'm sure I could destroy it without much effort, but that would be stupid on my part. It's luck of the draw...and I'm playing on the safe side.
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From: Long Island USA
Originally Posted by EgoMan
I would love to charge a 390 or whatever....but I sont wanna have to buy a forged crank, rods and pistons to do it...but if all i had to do was put forged pistons in...and run 6psi..im cool.
One thing:
Isn't it better to have a NO overlap cam with a supercharger? Wouldn't the 941 be a waste in that case? Or would it help bleed off low-end pressure? Just curious...
art k.
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From: Iowa
That was the thinking way way back when, when internal combustion engines were first being developed. The thinking was that any overlap at all would do all sorts of bad things, cause backfiring, reduce power, and so on. They would even separate the opening and closing points by 5 degrees to ensure no overlap! Eventually, it was found out that some valve overlap was actually quite beneficial to performance, as it helped scavanging.
Really, the 343941 is NOT that big of a cam; I'm sure it'd work great. When you force more air into an engine, you've got to get it out. That's where the extra exhaust duration of the 343941 will really help.
Really, the 343941 is NOT that big of a cam; I'm sure it'd work great. When you force more air into an engine, you've got to get it out. That's where the extra exhaust duration of the 343941 will really help.
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From: Ohio
Overlap is a bad thing with blowers, duration is not. I guess you need to find that sweet spot between the two...at least for a street motor. You'll never hear a lopey blower motor, unless it's the badly tuned fuel injection trying to over compesate.
I have to run my 390 RICH to keep it idling(per my a/f guage). As soon as I try to pull it down to stoich it dies. Some guys with late model stuff have computer issues trying to keep motors running. That is where you hear it search constantly.
I have to run my 390 RICH to keep it idling(per my a/f guage). As soon as I try to pull it down to stoich it dies. Some guys with late model stuff have computer issues trying to keep motors running. That is where you hear it search constantly.
Last edited by Freightrain; Aug 11, 2005 at 02:43 PM.
FE "Freakin Expensive"
Joined: Dec 2003
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From: Smith Mountain Lake, VA
Hmmmm, wonder if I should sell my parts for the 521" motor, and put a blown 302 in the Fox Stang?? wonder what kinda Hp it would make useing a 345hp 302 and a BDS blower? Hmmm? LOL...
Russ
Russ
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From: Iowa
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From: Eureka, Ca.
Originally Posted by RapidRuss
Hmmmm, wonder if I should sell my parts for the 521" motor, and put a blown 302 in the Fox Stang?? wonder what kinda Hp it would make useing a 345hp 302 and a BDS blower? Hmmm? LOL...
Russ
Russ
FE "Freakin Expensive"
Joined: Dec 2003
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From: Smith Mountain Lake, VA
Yep Randy sure Do!!!! LOL.. once bitten twice shy!! I guess thats the reason I dont take anyone's word for everything!!
Always looking for the most bang for the buck..within reason!!! It took me 2 years to find a Standard bore 428CJ at a REAL good price...and I ended up with 2...One CJ and the other is a .060" service block with 2000miles on the bores...
And the only thing missing for the 521" build is the Heads..I sold my Kaase SCJ's...and I'am waiting on Kaase to give the OK for production on the P51's (code name for now) and I need a few other odds and ends..LOL..the one's that add up more than the major parts... Oh Does it ever end?? LMAO!!!
Russ....and PS the Blown 302 was a Joke!!!
Always looking for the most bang for the buck..within reason!!! It took me 2 years to find a Standard bore 428CJ at a REAL good price...and I ended up with 2...One CJ and the other is a .060" service block with 2000miles on the bores...
And the only thing missing for the 521" build is the Heads..I sold my Kaase SCJ's...and I'am waiting on Kaase to give the OK for production on the P51's (code name for now) and I need a few other odds and ends..LOL..the one's that add up more than the major parts... Oh Does it ever end?? LMAO!!!
Russ....and PS the Blown 302 was a Joke!!!
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From: Ohio
I have a couple racing buddies running stroker windors(393+ ci) going 10.0's in 70 mustangs. They make great power...in a light package. Let alone the 427 ci version!
They just don't have the visual appeal of opening the hood to a pair of quads on an FE though...LOL!!
They just don't have the visual appeal of opening the hood to a pair of quads on an FE though...LOL!!
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From: Long Island USA
I've recently started looking at 347's, and stroke 351w's (forget the cubes)...
I'd love to shove one into a Triumph TR7 (shape of things to come - in '75) ... just can't find an aluminum block 302/351 yet... I'm sure they're out there, haven't found one...
I'd love to shove one into a Triumph TR7 (shape of things to come - in '75) ... just can't find an aluminum block 302/351 yet... I'm sure they're out there, haven't found one...