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05-13-2018, 02:27 PM
Replies: 257
Views: 6,882
Posted By Kevova

Hold you question was answered! 1 It will...

Hold you question was answered!

1 It will bolt on
2 . it can be welded and drilled. Will it work 100% unless you have a copy of the foundry patterns or cut the top of both the LT1 and l31 you...
05-12-2018, 10:56 PM
Replies: 257
Views: 6,882
Posted By Kevova

The tpi topic was covered in previous 2 threads.

The tpi topic was covered in previous 2 threads.
05-11-2018, 05:08 PM
Replies: 257
Views: 6,882
Posted By Kevova

Ok what you want and what you get aren't always...

Ok what you want and what you get aren't always the same thing. The Cast Iron LT1 head will work. To know for sure the vortec head will work you will need to cut a cast iron lt1 and vortec head in...
05-05-2018, 12:22 PM
Replies: 257
Views: 6,882
Posted By Benny42

The iron LT1 heads from caprices and roadmasters...

The iron LT1 heads from caprices and roadmasters are supposed to be better than the aluminum LT1 head and are a “port than & bolt on deal”. If your heart is set on ditching aluminum and going to...
05-04-2018, 04:07 AM
Replies: 67
Views: 3,478
Posted By Space387

I do need to clear a little bit up. My goal is to...

I do need to clear a little bit up. My goal is to create a torque profile similar to the LT1, by this widen the power band. Here is the exact differences I feel with the 2 cars, the Firebird ( LT1)...
05-03-2018, 05:34 PM
Replies: 67
Views: 3,478
Posted By Krusty84

Vortec heads, vortec tpi lower intake...

Vortec heads, vortec tpi lower intake (baseplate), and a mild cam.

Add some long tube headers and it will certainly make more power than your LT1.
01-01-2018, 07:58 PM
Replies: 231
Views: 7,226
Posted By Space387

bjankiski, only because it will skew the numbers...

bjankiski, only because it will skew the numbers a touch he has 3.42 rear gears and his 1st is 2.66 2nd is 1.78 ( 95 F-body T56)



I suggest changing one component at a time to give quantifiable...
12-24-2017, 11:15 PM
Replies: 121
Views: 3,965
Posted By cardo0

AFR heads are hard to beat. So I'm sure you...

AFR heads are hard to beat. So I'm sure you won't change those. I would take a compression test and see what your cranking pressure is now. If you're cranking pressure is below 180 psi then a...
11-29-2017, 10:00 AM
Replies: 231
Views: 7,226
Posted By Kevova

Advancing cam moves power band down. How much...

Advancing cam moves power band down. How much depends on cam profile. Because of the opti spark you would need a custom crank gear and reprogramming to correct timing offset. When you alter cam...
11-17-2017, 08:16 AM
Replies: 231
Views: 7,226
Posted By bjankuski

I am adding on to this post because I am not sure...

I am adding on to this post because I am not sure if you noticed the comment on the superam intake for the LT1. I have attached a older post where this intake was discussed with good results....
11-16-2017, 02:37 PM
Replies: 231
Views: 7,226
Posted By bjankuski

I am not going to get all involved in this...

I am not going to get all involved in this discussion but a ZZ4 cam would help you with torque down low. To do what you want which is maximize low end power you need to get cylinder filling at low...
11-15-2017, 07:08 PM
Replies: 231
Views: 7,226
Posted By GREGGPENN

Well...I mis-spoke. It isn't JUST the loss of...

Well...I mis-spoke. It isn't JUST the loss of reversion wave, it's also that the LONG tube presents so much resistance that the engine can't get air fast enough at higher rpms.




CR doesn't...
11-15-2017, 01:13 PM
Replies: 231
Views: 7,226
Posted By MatthewMiller

I don't know why you'd artificially limit...

I don't know why you'd artificially limit yourself to 5000rpm, when your stock intake already allows higher than that. That's just a silly goal within the context of a Corvette. And here is where...
11-12-2017, 03:49 AM
Replies: 231
Views: 7,226
Posted By GREGGPENN

Phoenix, this is actually the best recommendation...

Phoenix, this is actually the best recommendation of the choices posted so far.

To abandon SOME higher rpms -- in lieu of lower torque, you want to reduce duration. Keeping maximum lift will...
11-11-2017, 12:59 PM
Replies: 231
Views: 7,226
Posted By cardo0

IMHO the cam is the last item to choose in a...

IMHO the cam is the last item to choose in a engine build. Gearing and headers w/exh system will limit what you need for a cam. If you have stock exhaust you will need a cam with much more duration...
11-11-2017, 09:26 AM
Replies: 231
Views: 7,226
Posted By vader86

Well you have the LT1 intake, which is not set up...

Well you have the LT1 intake, which is not set up for low end and midrange torque, its an intake that comes into its own in the midrange and on up. Its not the camshaft or the heads that will change...
11-11-2017, 09:26 AM
Replies: 231
Views: 7,226
Posted By Cjunkie

ZZ4 gets it lift specs from a 1.5 rocker, LT4...

ZZ4 gets it lift specs from a 1.5 rocker, LT4 gets its lift from a 1.6.
Don’t be fooled the LT4 cam is really NO different than an LT1 except it gets a 1.6 rocker arm.
The ZZ4 cam is going to make...
11-08-2017, 03:42 AM
Replies: 21
Views: 2,494
Posted By Joe C

Gregg - I totally understand what you're saying,...

Gregg - I totally understand what you're saying, and I do understand the torque vs horsepower relationship, but what I was trying to get at is, for a typical street driven car, IMO, torque is more a...
11-04-2017, 07:07 PM
Replies: 343
Views: 8,188
Posted By Kevova

Who's flaming who? The thread has gone all over...

Who's flaming who? The thread has gone all over the place from if I shorten the length of the runners will a tpi fit on my car. To custom engine, heads, manifold, bio fuel, rocket fuel and now...
10-31-2017, 11:48 PM
Replies: 343
Views: 8,188
Posted By GREGGPENN

You know, Tom...at the risk of regretting it...

You know, Tom...at the risk of regretting it (with regard to Mr. Hell Bent), that graph isn't representative of JUST the TPI vs the LT1 intake. Match compression and repost IF you really insist on...
10-31-2017, 04:17 PM
Replies: 247
Views: 7,450
Posted By GREGGPENN

This is one of the most important statements in...

This is one of the most important statements in this thread. MOST guys do consider horsepower over torque. I'm one of the few that went the other way...but did so in a manner HOPING to capture...
10-31-2017, 02:01 PM
Replies: 343
Views: 8,188
Posted By AgentEran

The fact that your approach to gain torque from...

The fact that your approach to gain torque from your LT1 is to put a TPI intake on it.. That's pretty bad man.

99% chance you would be satisfied with LTs, exhaust work and some bolt-ons.. It...
10-27-2017, 09:57 PM
Replies: 343
Views: 8,188
Posted By GREGGPENN

If you've ever flipped the air filter on an old...

If you've ever flipped the air filter on an old V8, you know it alters sound. If you've ever swapped mufflers, you know it alters sound. I've had several combinations of motor, intake, mufflers,...
10-27-2017, 09:31 PM
Replies: 247
Views: 7,450
Posted By GREGGPENN

There are a couple of charts (on the net) that...

There are a couple of charts (on the net) that compare L98 and LT1 cars. Though very specific about LTx model year, the chart doesn't indicate 85 - 91 (even though there are some cam/power...
10-21-2017, 04:06 PM
Replies: 247
Views: 7,450
Posted By GREGGPENN

As most readers (if not all), your concern about...

As most readers (if not all), your concern about mpg and limiting air flow is counter-intuitive for any stroker/performance build. If you are THAT concerned, just don't do it. Plus, they have made...
Showing results 1 to 25 of 42
 


 
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