News:

It appears that the upgrade forces a login and many, many of you have forgotten your passwords and didn't set up any reminders. Contact me directly through helpmelogin@dodgecharger.com and I'll help sort it out.

Main Menu

Mystery big block...

Started by SRT-440, August 19, 2010, 06:44:27 PM

Previous topic - Next topic

SRT-440

Trying to figure out this engine/car. I will be pulling it out and tearing it down soon, but in the meantime, maybe someone has a set up like this. I don't know a whole lot about it..but maybe someone can give me a guess on how much hp/tq it might have made. It was built in '96 and is in need of a rebuild now..and was used in a 70 Satellite race car..original owner "claimed" it ran in the 11's back in the day.

Things with "?" means the owner claimed it but no proof..yet.

In '96:

383 (.030 over?)
12.5:1 pistons (don't know anything else about them yet)
Large wrist pins
906 heads milled and ported
Crane roller tip rockers (1.5)
new crank (forged?), new rods, balanced
pushrods lengthened to compensate
solid lift cam / 509 purple shaft
headers fitted to milled heads (port matched?)
Torker 383 intake (port matched?)
Holley 750 DP
Electric fuel pump
3.91 Rear
Torque converter is a "super street fighter" (unknown stall...by the way it drives prolly 3000+ stall)
has to run 50/50 race gas and 93 octane

727 is a fully manual that was custom built for racing..but have trouble shifting (might just need some adjusting) but Jamey (RD) is building me a nice 727 as we speak.  :2thumbs:

Supposedly the guy that built the motor and 727 works for TCI and I talked to him personally and he said it was a tough well built setup back in '96.

Now, I'm trying to decide if I should rebuild this setup with of course lower street friendly compression or stroking it to 496..OR just replace it with a 512 Stroker. Using this motor might save some $$ tho...of course more cubes is great..but looking for bang for buck with what I got.  Thoughts?
"It's not the size of the dog in the fight, it's the size of the fight in the dog..."

2012 SRT8 392 Challenger (SOLD)
2004 Dodge Stage 1 SRT-4 (SOLD)
1970 Plymouth Road Runner Clone w/6.1 HEMI (SOLD)
1971 Dodge Dart w/440 (SOLD)
1985 Buick Grand National w/'87 swap and big turbo (SOLD)

c00nhunterjoe

well all i can say is i run a 30 over 383 with basicly a 509 cam, iron heads (less roller tip rockers) the torker 383, 11-1 pistons, headers, and a 750 holley backed by 4:30's and mine is good for mid to high 12's, dont really forsee 11's in my car without serious headwork and a little more cam.  if that setup made it in the 11's i would say it was an 11.99 car

SRT-440

Yea 11's seems fast. I know nothing about drag racing classes..but u can still read what class it ran (the sticker left an out line in the glass) and it reads "631 PRO". Trying to figure out what class that is.
"It's not the size of the dog in the fight, it's the size of the fight in the dog..."

2012 SRT8 392 Challenger (SOLD)
2004 Dodge Stage 1 SRT-4 (SOLD)
1970 Plymouth Road Runner Clone w/6.1 HEMI (SOLD)
1971 Dodge Dart w/440 (SOLD)
1985 Buick Grand National w/'87 swap and big turbo (SOLD)

RD

Quote from: SRT-440 on August 19, 2010, 06:44:27 PM
Trying to figure out this engine/car. I will be pulling it out and tearing it down soon, but in the meantime, maybe someone has a set up like this. I don't know a whole lot about it..but maybe someone can give me a guess on how much hp/tq it might have made. It was built in '96 and is in need of a rebuild now..and was used in a 70 Satellite race car..original owner "claimed" it ran in the 11's back in the day.

Things with "?" means the owner claimed it but no proof..yet.

In '96:

383 (.030 over?)
12.5:1 pistons (don't know anything else about them yet)
Large wrist pins <---- whatever that means.. mopar wrist pins are very large compared to chevy's... i.e. mean more weight.  so yes, if he kept mopar one's in there, they are large hehe
906 heads milled and ported
Crane roller tip rockers (1.5)
new crank (forged?), new rods, balanced
pushrods lengthened to compensate <--- if the heads were milled, then the pushrods needed to be shortened, not lengthened
solid lift cam / 509 purple shaft  <------- mopar performance did not make a solid .509 cam.. they made a solid .590 cam but not a .509 solid.. they did make a hydraulic .509 cam though
headers fitted to milled heads (port matched?)
Torker 383 intake (port matched?) <--- not only matched but if the heads were milled, then the intake runners would have to be milled to compensate for the shortened distance between the two heads so the intake would actually fit
Holley 750 DP <----- is this the carburetor he used to race with?  a 750 on a 12.5 to 1 motor seems really small for me.. talk about leaning out on the upper rpm range especially with the below gear ratio
Electric fuel pump
3.91 Rear
Torque converter is a "super street fighter" (unknown stall...by the way it drives prolly 3000+ stall)
has to run 50/50 race gas and 93 octane

see above bold

secondly.. a 383's torque range, even with the 12.5 to 1 c/r wont really kick hard until 3800-4000.  I am assuming that the stall converter would need to be closer to that in order to get a big B body like that satellite into the 12's let alone the 11's.  Unless you have a wicked top end charge, you will need a great launch and 0-60ft to see the 11's.  With a 3000 stall, i just dont see it happening. 

I have not, to this day, seen a 383 w/3.91 gears and iron heads break into the 11's.  Not saying it is not impossible.. just REALLY FRICKEN HARD!  Especially with a B body.. A body.. i would concur to its feasibility, but a B body?  yeah whateva?!?
67 Plymouth Barracuda, 69 Plymouth Barracuda, 73 Charger SE, 75 D100, 80 Sno-Commander

SRT-440

I don't believe that the 391's where the gears back then cuz they seem kinda tame for a straight up race car and it's obvious thats all it was for a while.. and also there is evidence of different things as far as setups..like a trans brake, nitrous, has a four speed hump, subframe connectors (that they cut the floor pan to install.. :brickwall:).. in other words it's prolly seen lots of different setups. I know very little about engine building and was just reading what I wrote down at the time. I won't be certain of anything till it gets tore down.
I was thinking the stall was 3500-4000ish.  :shruggy:

The whole setup has been a pain in the butt for me so it's almost certain I'm gonna go with a 440.
"It's not the size of the dog in the fight, it's the size of the fight in the dog..."

2012 SRT8 392 Challenger (SOLD)
2004 Dodge Stage 1 SRT-4 (SOLD)
1970 Plymouth Road Runner Clone w/6.1 HEMI (SOLD)
1971 Dodge Dart w/440 (SOLD)
1985 Buick Grand National w/'87 swap and big turbo (SOLD)

RD

Quote from: SRT-440 on August 19, 2010, 09:36:19 PM
I don't believe that the 391's where the gears back then cuz they seem kinda tame for a straight up race car and it's obvious thats all it was for a while.. and also there is evidence of different things as far as setups..like a trans brake, nitrous, has a four speed hump, subframe connectors (that they cut the floor pan to install.. :brickwall:).. in other words it's prolly seen lots of different setups. I know very little about engine building and was just reading what I wrote down at the time. I won't be certain of anything till it gets tore down.
I was thinking the stall was 3500-4000ish.  :shruggy:

The whole setup has been a pain in the butt for me so it's almost certain I'm gonna go with a 440.

and a killer 727 lol.. i have the body of the trans done, working on the valve body modifications right now.  should have it all buttoned up this weekend and in the shipping crate.
67 Plymouth Barracuda, 69 Plymouth Barracuda, 73 Charger SE, 75 D100, 80 Sno-Commander

SRT-440

"It's not the size of the dog in the fight, it's the size of the fight in the dog..."

2012 SRT8 392 Challenger (SOLD)
2004 Dodge Stage 1 SRT-4 (SOLD)
1970 Plymouth Road Runner Clone w/6.1 HEMI (SOLD)
1971 Dodge Dart w/440 (SOLD)
1985 Buick Grand National w/'87 swap and big turbo (SOLD)

c00nhunterjoe

i think my 383 can see 11's. with the 2.76's it saw high 12's at 108mph on a 3k stall converter and slippy trans.   i agree with the torque statement 100%, my car doesnt come alive until about 3500. the smaller cubes backed by the 238 cam duration makes it a higher rpm screamer.you can see that in my youtube video's.  all in all the combo that is supposidly 11 second does sound like a far stretch but a few changes and i dont see it as impossible