87 IROC-Z next motor?
11-07-2011, 07:55 PM
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87 IROC-Z next motor?
Has a 305TPI/Auto. Would like to go 350TPI next go-around. Please explain to a GM illiterate (me) what I need to be looking for.....
What year(s) 350 block
What heads
Can I re-use my existing TPI
plus any other helpful info.
This car will be a driver, and not see any track time or severe beatings. Thanks!
What year(s) 350 block
What heads
Can I re-use my existing TPI
plus any other helpful info.
This car will be a driver, and not see any track time or severe beatings. Thanks!
Last edited by 80vettevert; 11-07-2011 at 08:25 PM.
11-08-2011, 09:46 AM
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Car: 91 Camaro RS
Engine: empty bay (for now)
Transmission: Built T-56
Axle/Gears: 3.42 stock posi disc
Re: 87 IROC-Z next motor?
its been dont many times over. a quick search will yield all the info you want(and some you didnt know you needed).
11-08-2011, 10:42 AM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
80vettevert, welcome aboard thirdgen.org.
The quickest, easiest, and cheapest route to 350 would be to get an '87-'95 light truck engine. Your TPI and everything needed will transfer from the 305 to the 350. It'll work fine without any changes to the TPI.
A couple notes of caution: It won't be a barn-burner; and I've seen a few of those engines have rod bearing failure.
And, make sure before you buy it that it's a 350 and not a 305.
The quickest, easiest, and cheapest route to 350 would be to get an '87-'95 light truck engine. Your TPI and everything needed will transfer from the 305 to the 350. It'll work fine without any changes to the TPI.
A couple notes of caution: It won't be a barn-burner; and I've seen a few of those engines have rod bearing failure.
And, make sure before you buy it that it's a 350 and not a 305.
11-08-2011, 08:23 PM
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Car: 1987 IROC-Z red t-top
Engine: Nothing much
Transmission: I wish t56
Axle/Gears: 9bolt 3.27 4sale
Re: 87 IROC-Z next motor?
Yes you will need to change things like injectors 305 has 19# and 350 has 22# a retune also on te ecu and or a 86-88 trans am it was only a few I think 2 350 (L98) camaro in 87. Don't use truck cam. What's your HP goal better what do u want to run in a 1/4 mile I run a 13.6 with a 305 I beat plenty of cars with twice as much hp I beat LS1 fbody too I will be swaping my motor too to a 383. But if u want a mean 305 cam full exhaust tune new injectors and a procharger get a 9bolt rear end 3.27 u will run in the 12s.
But few things if u want a 350 with little more kick than a stock 305 new base and runners stock tb port what every heads if they are stock would do vortech heads mild cam headers shorties and a taller rear gear no need for a 3.73 if u running a 700r4 please don't swap the 700 for a 350 or a 400 **** even a powr glid if u swap trans put a newer one in 480le t56 that stuff. I have some 22# injector for sale. Oh a good shift kit will make u fell faster than u going lol it do help a lil. I hope any of this help
But few things if u want a 350 with little more kick than a stock 305 new base and runners stock tb port what every heads if they are stock would do vortech heads mild cam headers shorties and a taller rear gear no need for a 3.73 if u running a 700r4 please don't swap the 700 for a 350 or a 400 **** even a powr glid if u swap trans put a newer one in 480le t56 that stuff. I have some 22# injector for sale. Oh a good shift kit will make u fell faster than u going lol it do help a lil. I hope any of this help
11-08-2011, 10:38 PM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Given this:
All of this:
...is pretty much moot.
Nothing needs to be changed for a DD.
Yes you will need to change things like injectors 305 has 19# and 350 has 22# a retune also on te ecu and or a 86-88 trans am it was only a few I think 2 350 (L98) camaro in 87. Don't use truck cam. What's your HP goal better what do u want to run in a 1/4 mile I run a 13.6 with a 305 I beat plenty of cars with twice as much hp I beat LS1 fbody too I will be swaping my motor too to a 383. But if u want a mean 305 cam full exhaust tune new injectors and a procharger get a 9bolt rear end 3.27 u will run in the 12s.
But few things if u want a 350 with little more kick than a stock 305 new base and runners stock tb port what every heads if they are stock would do vortech heads mild cam headers shorties and a taller rear gear no need for a 3.73 if u running a 700r4 please don't swap the 700 for a 350 or a 400 **** even a powr glid if u swap trans put a newer one in 480le t56 that stuff. I have some 22# injector for sale. Oh a good shift kit will make u fell faster than u going lol it do help a lil. I hope any of this help
But few things if u want a 350 with little more kick than a stock 305 new base and runners stock tb port what every heads if they are stock would do vortech heads mild cam headers shorties and a taller rear gear no need for a 3.73 if u running a 700r4 please don't swap the 700 for a 350 or a 400 **** even a powr glid if u swap trans put a newer one in 480le t56 that stuff. I have some 22# injector for sale. Oh a good shift kit will make u fell faster than u going lol it do help a lil. I hope any of this help
Nothing needs to be changed for a DD.
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