: I wasn't aware that that was a thing?
Recipe for 350HP
Thread Starter
Racer
Joined: Dec 2005
Posts: 374
Likes: 17
From: Dubai
Recipe for 350HP
Need a Parts shopping list for a 1991 L98 A4 to get her up to 350HP (No blower or juice), appreciate if someone already went to that to share the details.
already have the following:
- Borla S-Type Cat back
- Hooker 2149
Appreciate the feedback and details with parts brands & no.
TIA
already have the following:
- Borla S-Type Cat back
- Hooker 2149
Appreciate the feedback and details with parts brands & no.
TIA
Thread Starter
Racer
Joined: Dec 2005
Posts: 374
Likes: 17
From: Dubai
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
Any not-stock TPI intake will get you there with the other mods suggested. So, I'd start looking in the classifieds, ebay etc for and "big tube" TPI, HSR modded to fit a C4, Super Ram, Mini Ram, or any other "TPI" replacement intake that is either bigger runner and/or shorter runner. The IDEAL intakes for a street motor that is stock displacement (like you're proposing) is a Super Ram (harder to find) or a T-Ram (very hard to find).
Le Mans Master
Joined: Sep 2013
Posts: 6,192
Likes: 750
From: near the thumb in the mitten
Budget? Idk under your parameters shopping for a crate engine with the chip or prom to make it work could be more cost effective. The problem is 350hp will lead to 400 and so on. Not on the LS band wagon but it is a viable option
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Le Mans Master
Joined: Sep 2013
Posts: 6,192
Likes: 750
From: near the thumb in the mitten
This engine still just a sbc. Several different intakes available. tuners should have notes on previous tunes and builds. This isn't rocket science it just about money. I'm certain several members who are regulars on this board could supply an engine with the tune to make it work.
Drifting
Joined: Apr 2011
Posts: 1,925
Likes: 441
From: Albuquerque NM
Would be very interested to see what you get with the FIRST TPI. You're keeping the displacement at 350 cu in?
I would be interested to see long tube headers, true dual exhaust, either high flow cats and or mufflers or maybe delete cats and mufflers entirely.
Perhaps upgraded fuel pump, fuel pressure regulator (I think this might be a necessary part of installing the FIRST TPI), and maybe upgraded injectors?
Then a well chosen cam, and a good tune. I am curious if you can get to your 350 rwhp without changing the cylinder heads.
I would be interested to see long tube headers, true dual exhaust, either high flow cats and or mufflers or maybe delete cats and mufflers entirely.
Perhaps upgraded fuel pump, fuel pressure regulator (I think this might be a necessary part of installing the FIRST TPI), and maybe upgraded injectors?
Then a well chosen cam, and a good tune. I am curious if you can get to your 350 rwhp without changing the cylinder heads.
Race Director
Joined: Sep 2003
Posts: 16,838
Likes: 341
From: Database Error Indiana
Thread Starter
Racer
Joined: Dec 2005
Posts: 374
Likes: 17
From: Dubai
Thanks for the inputs..
Crate is not possible, keeping it 350 (for now). have to go with what I have, I'm not looking to compete just fun to drive car with fun passes on the road.
so, ingredients:
- Borla Cut Back system (Available - not installed yet).
- Hookers 2149 (Available - not installed yet)
- FIRST Intake (complete with rails, TB, Fuel reg...etc)
- ZZ4 Cam
- AFR 195 (is it really needed if a keep it 350?) or the stock will do just fine?
- 1.6 RR (brand??, self aligning or not??)
- Tune
anything else?
Crate is not possible, keeping it 350 (for now). have to go with what I have, I'm not looking to compete just fun to drive car with fun passes on the road.
so, ingredients:
- Borla Cut Back system (Available - not installed yet).
- Hookers 2149 (Available - not installed yet)
- FIRST Intake (complete with rails, TB, Fuel reg...etc)
- ZZ4 Cam
- AFR 195 (is it really needed if a keep it 350?) or the stock will do just fine?
- 1.6 RR (brand??, self aligning or not??)
- Tune
anything else?
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
AFR heads will com with guide plates, so NON self aligning rockers, if you decide to add rockers.
I'm sure. Those aren't crate motors though. Those would be "member built and tuned, custom motor". Your post above was misleading....to me at least, it sounded like you could order up a crate motor from Summit or Jegs and it would come with a Chip....which of course, you can not do.
Why are you advising the OP to spend money on this?? I already told you in your thread, that you don't need to be doing "fuel system upgrades" for 350 horse. OP; don't be throwing pumps, regulators and injectors at your combo unless it's shown that it needs it.
This engine still just a sbc. Several different intakes available. tuners should have notes on previous tunes and builds. This isn't rocket science it just about money. I'm certain several members who are regulars on this board could supply an engine with the tune to make it work.
Team Owner
Joined: Sep 2001
Posts: 62,160
Likes: 1,733
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
You have to decide the intake to get there. I could come up with a head/cam choice for any intake, but they wouldn't be the same. Hence, make a choice. SR, MR, HSR, FIRST, etc. Really depends on where you want the powerband to be.
The difference in power from the 91 to 92 is really the intake, so slap a MR on a 91, and you basically have the LT1's powerband, and about 290-300bhp. You only need 50 more, and thats the cam and head choice.
I would be going with more than a ZZ4 camshaft, particularly if going with the Miniram. At a minimum a TPiS ZZ9 if that were the case.
AFR 195s would be overkill to get to 350hp on a 350sbc. Could have the current heads ported and get that number, and end up cheaper. I imagine getting that done in Dubai would be the problem though. I would go with something cheaper or a little smaller than 195s if 350hp is the only firm goal.
In any case, upgrading the TC from the stock wimpy 1500rpm stall to 2000-2200 is a necessity.
The difference in power from the 91 to 92 is really the intake, so slap a MR on a 91, and you basically have the LT1's powerband, and about 290-300bhp. You only need 50 more, and thats the cam and head choice.
I would be going with more than a ZZ4 camshaft, particularly if going with the Miniram. At a minimum a TPiS ZZ9 if that were the case.
AFR 195s would be overkill to get to 350hp on a 350sbc. Could have the current heads ported and get that number, and end up cheaper. I imagine getting that done in Dubai would be the problem though. I would go with something cheaper or a little smaller than 195s if 350hp is the only firm goal.
In any case, upgrading the TC from the stock wimpy 1500rpm stall to 2000-2200 is a necessity.
Burning Brakes
Joined: Sep 2016
Posts: 1,133
Likes: 319
From: Ohio
If you're going with a good aftermarket intake and going as far as AFR 195s to match, I'd skip the small ZZ4 and go with something like the Summit Pro SBC Stage 3 camshaft.
Converter to match, without a doubt.
Converter to match, without a doubt.
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
My '92 did 279 RWHP with a K&N air filter, for it's "mods".
My '89 did 258 RWHP with a Mini Ram intake, 52mm TB, no air filter, advanced timing, dual exhaust, H-Pipe w/no cats, 160 stat, no smog pump/AC, Underdrive pullies.
So, no, an L98 w/a MiniRam is not an LT1. Not even close, really.
Burning Brakes
Joined: Sep 2016
Posts: 1,133
Likes: 319
From: Ohio