Which first, the runners or the intake?
#1
Thread Starter
Senior Member
Joined: Dec 2004
Posts: 554
Likes: 60
From: TEXAS
Car: 1987 IROC-Z
Engine: 6.2L
Transmission: Stage III T56
Axle/Gears: 3.73
Which first, the runners or the intake?
Dont have the budget at the moment for both. Which should I do first? Which would I see more gains from?
#2
Re: Which first, the runners or the intake?
You won't see much gain with one or the other. If you can do a little porting, I'd gasket match the stock intake, take out the "rim" at the runner inlet, and clean up the casting a bit on the stock intake. That along with porting the plenum and adding after-market runners would show a noticeable improvement. Depending on your porting capability or desire to do it yourself,,, it is possible to port a stock base intake to flow as much as,, even a little more,,, than a box stock after-market base.
Saying that, depending on your stall speed and cam,,,, the StealthRam might be a good alternative.
Saying that, depending on your stall speed and cam,,,, the StealthRam might be a good alternative.
#3
Supreme Member
iTrader: (9)
Joined: Mar 2007
Posts: 1,804
Likes: 2
From: Raleigh, NC
Car: 1988 Flame Red Trans am GTA
Engine: Forged 355 4 Bolt, FIRST TPI
Transmission: 700r4
Axle/Gears: ls1 torsen 3.42 gear
Re: Which first, the runners or the intake?
from someone who has been the route, I would choose neither...will not much much bang for your buck... im looking at your mods and they are nice.... if you really like the "tpi" setup then I would get a FIRST intake.... its like a tpi on steroids...
#4
Thread Starter
Senior Member
Joined: Dec 2004
Posts: 554
Likes: 60
From: TEXAS
Car: 1987 IROC-Z
Engine: 6.2L
Transmission: Stage III T56
Axle/Gears: 3.73
Re: Which first, the runners or the intake?
You won't see much gain with one or the other. If you can do a little porting, I'd gasket match the stock intake, take out the "rim" at the runner inlet, and clean up the casting a bit on the stock intake. That along with porting the plenum and adding after-market runners would show a noticeable improvement. Depending on your porting capability or desire to do it yourself,,, it is possible to port a stock base intake to flow as much as,, even a little more,,, than a box stock after-market base.
Saying that, depending on your stall speed and cam,,,, the StealthRam might be a good alternative.
Saying that, depending on your stall speed and cam,,,, the StealthRam might be a good alternative.
Im thinking SLP runners with me or someone locally putting some elbow grease into my stock intake (for now)
thoughts?
#5
Supreme Member
Joined: Nov 2008
Posts: 1,146
Likes: 6
From: Houson
Car: 86 Firebird
Engine: 305 SBC
Transmission: 700 R4 TCI
Axle/Gears: 3.42
Re: Which first, the runners or the intake?
I would go with the stealth ram and transfer your stuff over. Cost about the same as the runners would new and lots more bang for the buck. Or a mini ram
#6
Re: Which first, the runners or the intake?
You know,,, I've run a fully ported stock base with ported SLP runners (ran 12.9s), the FIRST (12.5s), and a StealthRam (12.6s) on the same car - no other changes. I had a 3000 stall speed converter and 3.23 gears. I preferred the FIRST, but it cost more than the other two combinations (it's not any more expensive than an aftermarket TPI base, runners, and throttle body though).
However, with 3.73 gears and a little more stall speed,,, even if money is tight,,, I think if I were you, I'd skip the SLPs and save up for the StealthRam.
#7
Thread Starter
Senior Member
Joined: Dec 2004
Posts: 554
Likes: 60
From: TEXAS
Car: 1987 IROC-Z
Engine: 6.2L
Transmission: Stage III T56
Axle/Gears: 3.73
Re: Which first, the runners or the intake?
You know,,, I've run a fully ported stock base with ported SLP runners (ran 12.9s), the FIRST (12.5s), and a StealthRam (12.6s) on the same car - no other changes. I had a 3000 stall speed converter and 3.23 gears. I preferred the FIRST, but it cost more than the other two combinations (it's not any more expensive than an aftermarket TPI base, runners, and throttle body though).
However, with 3.73 gears and a little more stall speed,,, even if money is tight,,, I think if I were you, I'd skip the SLPs and save up for the StealthRam.
However, with 3.73 gears and a little more stall speed,,, even if money is tight,,, I think if I were you, I'd skip the SLPs and save up for the StealthRam.
thanks for your input
Trending Topics
#8
Joined: Apr 2005
Posts: 7,734
Likes: 11
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: Which first, the runners or the intake?
Better read this then
https://www.thirdgen.org/forums/alte...gal-whats.html
https://www.thirdgen.org/forums/alte...gal-whats.html
#9
Thread Starter
Senior Member
Joined: Dec 2004
Posts: 554
Likes: 60
From: TEXAS
Car: 1987 IROC-Z
Engine: 6.2L
Transmission: Stage III T56
Axle/Gears: 3.73
Re: Which first, the runners or the intake?
Better read this then
https://www.thirdgen.org/forums/alte...gal-whats.html
https://www.thirdgen.org/forums/alte...gal-whats.html
Thanks. Bought fuel rails
Thread
Thread Starter
Forum
Replies
Last Post
toronto formula
Engine/Drivetrain/Suspension Parts for Sale
3
09-10-2015 07:31 AM
e3pres
Engine/Drivetrain/Suspension Parts for Sale
1
09-09-2015 01:51 PM