zz4 vs zz383?
Intermediate
Joined: Mar 2006
Posts: 25
Likes: 0
check out this set up for your 350CI engine http://store.summitracing.com/partde...5&autoview=sku
or you can go with a complete custom engine from http://www.speedomotive.com/
or you can go with a complete custom engine from http://www.speedomotive.com/
Race Director
Joined: May 2003
Posts: 10,749
Likes: 41
Originally Posted by nelson84
Most of the articles are from old Vette and Corvette Fever magazines when they were good.
If I can figuire out my scanner I might be able to post them and figuire out how to send them to that photobucket thing.
If I can figuire out my scanner I might be able to post them and figuire out how to send them to that photobucket thing.
sounds good to me!!!!!!!
Le Mans Master
Joined: Jul 1999
Posts: 8,683
Likes: 6
From: Phoenix AZ
Originally Posted by 4Ever21
Would a 427 even fit in a C4? I know the LS7 would but its a specially designed 427.
Drifting
Joined: Oct 2004
Posts: 1,281
Likes: 21
From: Orlando Florida
Originally Posted by vader86
In terms of what? power potential?
Fastburns are well beyond the ZZ4 heads, which are the same as '113 88-91 heads. No question which will make more power.
210cc runner vs 163cc runner, unported.
The question is whether the heads are too big for SR.
Fastburns are well beyond the ZZ4 heads, which are the same as '113 88-91 heads. No question which will make more power.
210cc runner vs 163cc runner, unported.
The question is whether the heads are too big for SR.
Are the FB heads too big for a TPI system?
What happens if you put a TPI system on top of a ZZ383? What will that do to the powerband of the motor?
My experience with the 113 heads is that they have poor casting. There are burrs and dings in the casting, which I thought was careless and low quality. Are the FB heads of better casting and machining quality?
Race Director
Joined: May 2003
Posts: 10,749
Likes: 41
Originally Posted by nelson84
I have read plenty of articles with a stock tpi engine block with a zz9 cam and heads tpi big runners and intake and chip and headers and pulleys run low 12's so I would think a 383 would do better than that so why would low 12's be a stretch with either engines?
any luck with those articles???
Drifting
Joined: Oct 2004
Posts: 1,281
Likes: 21
From: Orlando Florida
What would a TPI on top of that ZZ383 do to the powerband of the motor?
The ZZ383 is rated for 425/460 but that's with a carb. What kind of numbers would a fully ported TPI system have on the ZZ383?
The ZZ383 is rated for 425/460 but that's with a carb. What kind of numbers would a fully ported TPI system have on the ZZ383?
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Thread Starter
Pro
Joined: Feb 2006
Posts: 731
Likes: 0
From: British Columbia
April 96 corvette fever (Intrepod tuned port)
TPI Specialties cold air package
52mm TB
ZZ9 cam
large tube runners
ported plenum
modified mass air sensor
CNC ported heads
accel manifold and headers= 12.3 1/4 at 112 mph
TPI Specialties cold air package
52mm TB
ZZ9 cam
large tube runners
ported plenum
modified mass air sensor
CNC ported heads
accel manifold and headers= 12.3 1/4 at 112 mph
Burning Brakes
Joined: Sep 2004
Posts: 869
Likes: 1
From: Bradford Pa
Originally Posted by vader86
you can shoehorn it in
the motor fits physically with no real mods. if you use a single groove v-belt crank pulley you don't even need to move the steering rack forward. i did so however to fit the black mountain precision cog drive system. certain oil pans do not require you clearance the crossmember (i have a high capacity hamburger racing pan - clearancing needed), and if you run a 6.75" balancer you should have no issues with that. the HVAC box will need to be swapped with a ZR1 unit or modify the stock cover. other than that, it's a pretty much direct drop in. engine management is another issue. i'm going straight carb. others have gone stand alone MPI, FAST, or with one of the holley units. either way, it'll friggin scoot.
oh...transmission will need to be heavily beefed up unless you are a ZF6 6 speed. dana 44 probably cryotreated at a minimum for rear end.
gauges probably won't work depending on if you can swap over your sensors. i plan on swapping over my oil pressure and oil temp, along with coolant temperature. my speedo will still work due to it drawing directly from the VSS and going to the dash before the ECM and actually my tach should theoretically work as well, but i'll probably go aftermarket tach anyways.
so yeah...piece of cake...lol
Team Owner
Joined: Sep 2001
Posts: 62,142
Likes: 1,729
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Originally Posted by Edmond
I've read that the FB heads are capable of supporting 500 HP and need no further porting.
Are the FB heads too big for a TPI system?
What happens if you put a TPI system on top of a ZZ383? What will that do to the powerband of the motor?
My experience with the 113 heads is that they have poor casting. There are burrs and dings in the casting, which I thought was careless and low quality. Are the FB heads of better casting and machining quality?
Are the FB heads too big for a TPI system?
What happens if you put a TPI system on top of a ZZ383? What will that do to the powerband of the motor?
My experience with the 113 heads is that they have poor casting. There are burrs and dings in the casting, which I thought was careless and low quality. Are the FB heads of better casting and machining quality?
Yes, they are huge for TPI, and I believe too big for SR.
Choke the hell out of it, it wont make anywhere near 425. You'll probably be lucky to get 375 with a stock TPI on it.
You get stuff like that on all mass-produced heads, FB's are a bit better though.
Last edited by vader86; Apr 23, 2006 at 11:28 AM.
Drifting
Joined: Oct 2004
Posts: 1,281
Likes: 21
From: Orlando Florida
Fubar,
That sounds like a lot of work!
Vader,
What would the torque numbers look like? The main thing I'm interested in is torque. I'm not going to use the stock TPI system. I'll probably go with the TPIS Big Mouth with ASM runners or the Edelbrock system.
That sounds like a lot of work!
Vader,
What would the torque numbers look like? The main thing I'm interested in is torque. I'm not going to use the stock TPI system. I'll probably go with the TPIS Big Mouth with ASM runners or the Edelbrock system.
Team Owner
Joined: Sep 2001
Posts: 62,142
Likes: 1,729
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Torque would probably be around 400 at the crank, but at a lower rpm that its rated.
Its also rated with headers.
Its also rated with headers.
Drifting
Joined: Oct 2004
Posts: 1,281
Likes: 21
From: Orlando Florida
Originally Posted by vader86
Torque would probably be around 400 at the crank, but at a lower rpm that its rated.
Its also rated with headers.
Its also rated with headers.
Team Owner
Joined: Sep 2001
Posts: 62,142
Likes: 1,729
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Originally Posted by Edmond
400 torque could also be done with the ZZ4 right?
