Small Block & Big Block Chevy Specific Mouse & Rat Motor Discussion & Conversions

TPI intake swapped for LT1 intake

Old 03-15-2009, 04:30 PM
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Default TPI intake swapped for LT1 intake

Does anyone know if this is a good idea? I have a bone stock 1988 305 tpi iroc-z and i want to do a head swap. But i need to know what are some good budget heads, and if an lt1 intake is a good idea or should i stick with the tpi intake?
Old 03-15-2009, 04:57 PM
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Yup, I have done it.

check here

http://www.lt1intake.com/
Old 03-15-2009, 07:27 PM
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Well, my buddy has had problems with the swap, it is not perfect. I say get a miniram.
Old 03-15-2009, 07:41 PM
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on 5.0 it might be alil much for it..alot of ur bottem end grunt wil prob be gone..but will rev real high....if you gunna stay with the 5.0 and do a H/C/I

id do the HSR/BBK intake/ or mod the TPI

slp/edelbrocks TPI runners are the cheapest intake mod of them all so
Old 03-15-2009, 08:03 PM
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slp/edelbrocks TPI runners are the cheapest intake mod of them all so[/QUOTE]

but i have a camaro performers issue where they measure an edelbrock intake to the stock tpi intake and the stock intake runners are wider then edelbrocks, and the base plate are both the same
Old 03-15-2009, 08:04 PM
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what are some good heads for a 305 tpi, cuz i cant really find any, the heads i find say i need a vortech style intake. I was thinking heads and some long tubes might make up for some of the torque lost from the lt1 intake. I have a little over $2000 to spend. And i know it needs a rebuild by now. I hardly drive it cuz it burns a lot of oil.
Old 03-15-2009, 08:32 PM
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Originally Posted by wolfen
slp/edelbrocks TPI runners are the cheapest intake mod of them all so
but i have a camaro performers issue where they measure an edelbrock intake to the stock tpi intake and the stock intake runners are wider then edelbrocks, and the base plate are both the same[/QUOTE]



i know the slp's are def better then stock


trickflow sells the best 305ci heads you can buy i think..no shaving and there alum for about 1100/1300$ for fully assm

are you going to change the cam aswell?
Old 03-15-2009, 08:37 PM
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for 2 grand i would put a 350 in it
Old 03-15-2009, 08:40 PM
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And i thought iroc cars were 350 cars
Old 03-15-2009, 08:42 PM
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B2L
Engine, 350ci, 230hp V8 (IROC-Z coupe only)
according to google it is
Old 03-15-2009, 08:52 PM
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383 or bust.
Old 03-15-2009, 09:11 PM
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Originally Posted by xx_ED_xx
for 2 grand i would put a 350 in it

i agree
Old 03-15-2009, 09:31 PM
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Originally Posted by xx_ED_xx
for 2 grand i would put a 350 in it
thats what i wanna do, i can get a cheap lt1 for around $800 and build that up, but my dad wont let me do major repairs in the garage like that
Old 03-15-2009, 09:38 PM
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Originally Posted by xx_ED_xx
B2L
Engine, 350ci, 230hp V8 (IROC-Z coupe only)
according to google it is
yea a coupe, mine is a convertable
1988 Convertible, fuel injection replaced the four-barrel carburetor on the optional 305ci, 170hp (RPO L03) engine(which sucks *****)
Old 03-15-2009, 10:05 PM
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So its not an iroc then
Old 03-15-2009, 10:49 PM
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then what is it guy? there were no z28s in 88. If you read the whole thing it says they started life as an iroc coupe but then were taken off the lot by ASC and turned into convertables thats why the vins 6th digit is a 2 instead of a 3

Last edited by wolfen; 03-15-2009 at 10:55 PM.
Old 03-16-2009, 08:02 AM
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With a bone stock 305 and only $2000 to invest (and the engine is smoking), I wouldn't be thinking about cylinder heads or an intake. Do the things that will give instant "seat of the pants" increase. You will also be able to use these parts down the road if you upgrade to a 350. Full length headers, cold air intake, new torque converter and rear gears, shift kit for transmission. Maybe a cam swap and tuning if you have some extra $ left. Head over to thirdgen.org. Lots of guys on there with decent 305 setups.
Old 03-16-2009, 08:21 AM
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8th Vin digit not being an 8 thats the difference between an iroc and a 305 car.
Old 03-16-2009, 10:07 AM
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Most IROCs were 305s.
Old 03-16-2009, 10:48 AM
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Might want to research that fact. And where the iroc name came from etc

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