2" 440 super comps on a 383 in 68 charger how will it work?

[goldcharger]

hey any body got any input on this set up it will have tti 2.5 with dyno max the engine is .030 over forged 10.5to1 474 pupleshaft 906 heads balenced as rotating assy 4spd toker 383 with thermoquad 3.23 sg gears w 245 60 14 kelly chargers let me know what you think oh ya 1.6 mp roller rockers too

[451Mopar]

The 2" super comp headers are too big for the mild 383, plus they are designed for the taller deck 440, so they may hang down further and cause fitment problems in the chassis.

I had the Hooker comp 1-7/8" headers on my 383 and they fit pretty good and actually sealed, but I lost a bit of low end torque that I had with the 1-3/4" blackjack headers. The smaller tube headers seemd to work good on the mild 383, but the quality was so bad, I sent them back and got the Hooker headers.

Later when I swaped the 383 for the 451 stroker I used the 2" hooker super comp headers and these are a really tight fit and hard to work around, even with the raised exhaust ports of the B1 heads.

[plumebody]

Go with the tti headers if you are going with the tti exhaust. I got them both for my ebody and love them. The headers are worth it. Plus the system is ment to go together. A perfect match! Also,2" is too big. 1 3/4

[SubLime440]

What size do you think for my mild 440... I currently have the Mopar Performance 1 5/8" headers.... I think the thing would breath better with a 1 7/8 " tube...

440 Plus .040
TRW 2266 9:1 compression
906 heads ported / Milled .100 to closed chamber. (2.14/1.81)
Hughes HE3038BL hyd cam (230/236 duration at 50)
Harland Sharp Roller Rockers (1.6 intake & 1.5 exhaust)
Isky Push Rods
Double Roller Chain.... Fluid Damper
Underdrive Pulley
Edelbrock Performer RPM
Holley HP1000 CFM Carb.
Ram air setup / K&N Filter
Hemi 4 Speed (Centerforce Clutch)
8.75 rear end w/Spool moser axels 4.57 gears
MSD Pro Billet Distributor / MSD 6AL box
3630 LB car w/me in it.
Runs 12.84 at 106 MPH at 5800 ft above sea level
(Corrected to around a 12.20 ET)

What do ya think??????

[plumebody]

My opinion,the 1 3/4 is ok for your current set up however if you plan to upgrade in the near future and go faster, go for 2". I hate to see anyone buy twice. Thats alot of gear for a mild bb. What do you cross the line at?

[SubLime440]

I cross the line at 106... about 5600 RPM... I read that the 1 and 7/8" headers seem to be best fitted for a motor like this (mild street strip motor).... I was just trying to see what other people are running and did it really make a big difference... The article I read had the 1 7/8" out performing the 2" up to 6000 RPM... and it gave about 15 - 20 HP over the small 1 5/8"... Is it worth the expense to throw the bigger headers on there?????

[451Mopar]

I did not know anyone even made that small (1-5/8") a header for a big block?

The general rule for a performance type engine is to use a header tube diameter that is about the same size as the exhaust valve.
Race engines usually go with a slightly larger size, and rv engines a slightly smaller size, because ofwhere their RPM power bands are.

Anyhow, the 1-7/8" should work good on your engine.