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L98 questions

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Old Dec 14, 2002 | 10:48 AM
  #1  
deepstage69's Avatar
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From: Kingsport, TN
Car: '92 RS, '84 Z28
Engine: 383, L69
Transmission: T56, 700R4
Axle/Gears: 3.42, 3.42
L98 questions

Im putting a l98 with 305 heads that have been ported, it will be a straight drive car, with 3.42 rear, daily driven, its a roller block, what kind of cam should i run, and also i want it to have a little rough idle, i dont want smooth idle, and it will also see use at the strip ocassionally, and it will get full length headers and duals in about another month, thanks

Kevin
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Old Dec 23, 2002 | 12:29 AM
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good luck with the project what are you going to have into it?
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Old Dec 23, 2002 | 01:00 AM
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From: Kingsport, TN
Car: '92 RS, '84 Z28
Engine: 383, L69
Transmission: T56, 700R4
Axle/Gears: 3.42, 3.42
Well if all plans go right, late january early feb, just gotta get some odds and ends, like clutch pedal assembly, console, and a few other misc.
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Old Dec 23, 2002 | 03:45 PM
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From: Haverhill, Ma
Car: Corvette
Engine: 5.7
Transmission: 700R4
if you have an l98 why put the 305 heads on there? thats just gonna hinder performance. just mill the l98 heads to boost your compression and port those. which is already 9.5:1 so u dont want it to high or your not gonna last too long.
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Old Dec 26, 2002 | 04:44 AM
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hey SinthetikIroc read this one thread.

https://www.thirdgen.org/techbb2/sho...=l98+305+heads
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Old Dec 26, 2002 | 05:57 AM
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From: Haverhill, Ma
Car: Corvette
Engine: 5.7
Transmission: 700R4
ive read that before. read these


http://forums.iroczone.com/viewtopic.php?t=4431


http://forums.iroczone.com/viewtopic.php?t=4430
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Old Dec 26, 2002 | 01:42 PM
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i see..

seems like it can be done however it may not be the route to go sometimes.
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Old Dec 26, 2002 | 02:15 PM
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From: Haverhill, Ma
Car: Corvette
Engine: 5.7
Transmission: 700R4
your better off jus milling 350 heads to a smaller combustion chamber to raise your compression ratio. and spend the money for porting and polishing some 350 heads which will outflow the 305 heads and accept the bigger valves and what not without shrouding the valves and what not.
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Old Dec 27, 2002 | 11:44 PM
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From: redneck central
Heads??

I have to agree 305 heads on a 350 ported or not does not make any sense..Yes they will work but why do it? Port the L98 heads and be way ahead of the ballgame. Just my 2 cents...later
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Old Dec 28, 2002 | 02:46 AM
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From: Kingsport, TN
Car: '92 RS, '84 Z28
Engine: 383, L69
Transmission: T56, 700R4
Axle/Gears: 3.42, 3.42
i didnt recieve the 350 heads and i dont have that much money for a new set at the moment, i gotta use what i got, but sometime this fall i plan on having the money for a good set.
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Old Dec 28, 2002 | 05:20 AM
  #11  
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From: Haverhill, Ma
Car: Corvette
Engine: 5.7
Transmission: 700R4
Re: Heads??

Originally posted by Hung Start67
I have to agree 305 heads on a 350 ported or not does not make any sense..Yes they will work but why do it? Port the L98 heads and be way ahead of the ballgame. Just my 2 cents...later
exactly.


and you can get some 350 heads out of the junkyard for cheap.

i have 2 sets of heads myself that im trying to get rid of. set of 462624 casting and a set of L98s. theres plenty of stock heads out there for cheap. i just saw a pair of camel hump heads go for 25 bucks on ebay. you just have to look.
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Old Dec 28, 2002 | 02:52 PM
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From: Kingsport, TN
Car: '92 RS, '84 Z28
Engine: 383, L69
Transmission: T56, 700R4
Axle/Gears: 3.42, 3.42
thanks for the info, im gonna hold off on the motor a bit, so i can find a little better head.
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