tpi to carb distributer question
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Joined: Jan 2004
Posts: 24
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From: South Carolina
Car: 1988 Chevrolet Camaro Iroc Z28
Engine: 5.7 liter TPI L98
Transmission: TH- 400
tpi to carb distributer question
I read the tech article for the swap does anyone know if the gm performance distributer is the best bet or is there a msd or something that would be better. Or does anyone know any details about the gm dist other than it has the melonized gear. I would rather pay 250.00 for something else if it was alot better verses that 190.00 or so.
Joined: Mar 2000
Posts: 43,187
Likes: 45
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
It's got a decent coil and module, vs. the typical production HEI. I ran it for awhile in the 396 until a Crane HI-6 was given to me (the Crane eliminated the module). After that, I put an MSD coil in, thinking that might have been the cause of an intermittent high-RPM miss (turned out to be valve springs).
Summit has a complete unit for about $150. That's probably a better deal for a simple EFI to carb conversion. If you're going all-out nuts with high RPMs, you'd probably want something better.
Summit has a complete unit for about $150. That's probably a better deal for a simple EFI to carb conversion. If you're going all-out nuts with high RPMs, you'd probably want something better.
Thread Starter
Junior Member
Joined: Jan 2004
Posts: 24
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From: South Carolina
Car: 1988 Chevrolet Camaro Iroc Z28
Engine: 5.7 liter TPI L98
Transmission: TH- 400
There are so many dist. to choose from how do you Know if it has a compatable gear. I have about 300 dollars to go toward a dist. and coil. I would like something along the lines of a msd or crane
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Joined: Jul 2003
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From: Grand Rapids, MI
Car: Z28
Engine: Sb2.2 406
Transmission: Jerico 4 speed
Axle/Gears: Ford 9" 3.60
Most have gears compatable with the iron gears on the cam. Every distributor company i have seen makes special notice if it comes with the bronze gear.
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Joined: Jul 2003
Posts: 4,803
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From: Grand Rapids, MI
Car: Z28
Engine: Sb2.2 406
Transmission: Jerico 4 speed
Axle/Gears: Ford 9" 3.60
"Melonized" (wherever that term came from, silly GM) is their word for "roller camshaft gear." They are, i guess, hardened for the roller cams. However, you won't go finding aftermarket distributor companies saying "Comes with melonized cam gear for factory roller applications." For the most part, it's going to either be a gear for the iron folks or a gear for the billet steel folks.
Do you have the factory cam? If so, it may be worth looking into the "melonized" gear. Not saying it's 100% needed, because i really don't think it is. I'm sure there are plenty of people running an aftermarket distributor with the equipped gear spinning on a factory hydraulic roller cam...
Do you have the factory cam? If so, it may be worth looking into the "melonized" gear. Not saying it's 100% needed, because i really don't think it is. I'm sure there are plenty of people running an aftermarket distributor with the equipped gear spinning on a factory hydraulic roller cam...
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Joined: Jul 2000
Posts: 6,530
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From: Aridzona
Car: `86 SS / `87 SS
Engine: L69 w/ TPI on top / 305 4bbl
Transmission: `95 T56 \ `88 200-4R
Originally posted by Stekman
"Melonized" (wherever that term came from, silly GM) is their word for "roller camshaft gear." They are, i guess, hardened for the roller cams. However, you won't go finding aftermarket distributor companies saying "Comes with melonized cam gear for factory roller applications."
"Melonized" (wherever that term came from, silly GM) is their word for "roller camshaft gear." They are, i guess, hardened for the roller cams. However, you won't go finding aftermarket distributor companies saying "Comes with melonized cam gear for factory roller applications."
Joined: Mar 2000
Posts: 43,187
Likes: 45
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Well, that's interesting, because GM says you need a melonized gear with their factory roller cams.
If you're running an aftermarket billet roller cam, you need a bronze gear.
If you're running an aftermarket billet roller cam, you need a bronze gear.
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