Edlbrock high flow TPI base
Thread Starter
Drifting
Joined: Oct 2006
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From: Stafford Connecticut
Edlbrock high flow TPI base
Just bought an Edlbrock high flow base and AS&M large tube runners. I am putting them on a 350 with World Products sportsman II heads with LT4 cam and 1.6 rockers. The motor is supposed to put out 415 horse and 435 ft lbs torque. Is anyone running the same intake? It seems likethe base could use some cleaning up and porting. Has anyone run the same combination, and what is your opinion?
Thanks, Steve
Thanks, Steve
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From: Athens AL
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The TPiS base is an Edelbrock base that has been cleaned up and ported.
I doubt that your combination will make the power you think it will.
I doubt that your combination will make the power you think it will.
Thread Starter
Drifting
Joined: Oct 2006
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From: Stafford Connecticut
Well its not exactly a stock 350. Its a build I found in Hot Rod magazine. It uses a 400 block zero deck 6 1/4 long rods, 327 crank and J&E flat top pistons with 10.5 to 1 compression. I am using a retro fit roller cam and lifters.
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From: Athens AL
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That is not my issue with the combo....
You've got a TPI intake thats stuck with an engine+heads+cam combo that wants to rev, TPI will kill it's power.
You've got a TPI intake thats stuck with an engine+heads+cam combo that wants to rev, TPI will kill it's power.
Thread Starter
Drifting
Joined: Oct 2006
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From: Stafford Connecticut
I agree it probably will lose some power, I got some good information off your site. There was one build I believe that got 400 horse and 500 ft lbs torque, but with a bigger cam. When I did my build I was afraid to go with a longer duration cam because of drivability issues, so I went a little more conservative. The engine in the magazine peeked at 5800 rpm. I doubt the TPI will go that high.
Last edited by steven mack; Nov 28, 2006 at 05:44 PM.
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Doing some cleaning up on mine:
I didn't want to change the shape, since I do not know a lot about what is best. The cleaning up took many hours. Click My Corvette Pictures, by my avatar for more.
I didn't want to change the shape, since I do not know a lot about what is best. The cleaning up took many hours. Click My Corvette Pictures, by my avatar for more.
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From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
The injector binding problem is because the edelbrock fuel rail posts are too short. You should definitely put washers in there to avoid damaging the injectors.
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Originally Posted by steven mack
Just bought an Edlbrock high flow base and AS&M large tube runners. I am putting them on a 350 with World Products sportsman II heads with LT4 cam and 1.6 rockers. The motor is supposed to put out 415 horse and 435 ft lbs torque. Is anyone running the same intake? It seems likethe base could use some cleaning up and porting. Has anyone run the same combination, and what is your opinion?
Thanks, Steve
Thanks, Steve
Btw,if you didnt know,the older GM ZZ4 crate engine made 355 HP in carbed form.Its very similar to the 88-91 350 TPI engine since it uses the same stock D port heads.The ZZ4 cam helps some too,but slap on a TPI to a ZZ4 crate engine and it wont make the 355 HP the engine is famous for with the carb.Its not saying carb is better,just the TPIs dont flow the air carb intakes do...a miniram or similar efi intake may take it to there or more.
However,if you keep the TPI style,drive your cars everyday and dont see 4,800-5,000 rpms all the time,the cars gonna pull like a rocket with nothing but torque ruling your tires.If youre building a car to make the best times mostly on the track,then a different intake will be one of your mods.
Thread Starter
Drifting
Joined: Oct 2006
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From: Stafford Connecticut
Originally Posted by Bill's86Coupe
Was this engine carbed dyoned at that HP?If carbed,any TPI you add will not make nearly that much.You may see an increase in torque though,and that would be even more killer on the street if thats where your engine combo will spend most of its time.Or torque may fall down but be fatter at a lower rpm band,which is ideal for a street engine.
Btw,if you didnt know,the older GM ZZ4 crate engine made 355 HP in carbed form.Its very similar to the 88-91 350 TPI engine since it uses the same stock D port heads.The ZZ4 cam helps some too,but slap on a TPI to a ZZ4 crate engine and it wont make the 355 HP the engine is famous for with the carb.Its not saying carb is better,just the TPIs dont flow the air carb intakes do...a miniram or similar efi intake may take it to there or more.
However,if you keep the TPI style,drive your cars everyday and dont see 4,800-5,000 rpms all the time,the cars gonna pull like a rocket with nothing but torque ruling your tires.If youre building a car to make the best times mostly on the track,then a different intake will be one of your mods.
Btw,if you didnt know,the older GM ZZ4 crate engine made 355 HP in carbed form.Its very similar to the 88-91 350 TPI engine since it uses the same stock D port heads.The ZZ4 cam helps some too,but slap on a TPI to a ZZ4 crate engine and it wont make the 355 HP the engine is famous for with the carb.Its not saying carb is better,just the TPIs dont flow the air carb intakes do...a miniram or similar efi intake may take it to there or more.
However,if you keep the TPI style,drive your cars everyday and dont see 4,800-5,000 rpms all the time,the cars gonna pull like a rocket with nothing but torque ruling your tires.If youre building a car to make the best times mostly on the track,then a different intake will be one of your mods.
the reason I chose TPI is exactly what you said at the bottom of your post. The torque curve on the engine build is 400 ft lbs of torque from 2500 rpm all the way to 5300 rpm. So the flat torque curve makes the engine more fun to drive and thought it would be better suited for TPI.
Thread Starter
Drifting
Joined: Oct 2006
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From: Stafford Connecticut
Originally Posted by cuisinartvette
Looks like a stock base, did you notice a large improvement? There is an article on comp cams that extrude honed a stock base and got numbers close to the Edlebrock base. I was thinking of porting my stock base and sending back the Edlebrock base. Thanks
Last edited by steven mack; Nov 29, 2006 at 09:50 AM.
Racer
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From: Germany
We had to use some washers to space up the fuel rail on one of the bases we had, but it had SVO injectors on it. Don't know if stock injectors would have that problem.
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From: The Top of Utah
Originally Posted by steven mack
the reason I chose TPI is exactly what you said at the bottom of your post. The torque curve on the engine build is 400 ft lbs of torque from 2500 rpm all the way to 5300 rpm. So the flat torque curve makes the engine more fun to drive and thought it would be better suited for TPI.
RACE ON!!!
Thread Starter
Drifting
Joined: Oct 2006
Posts: 1,328
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From: Stafford Connecticut
Originally Posted by CFI-EFI
If you wanted an exercise in crank swaps, you could have built a 421 or a 434. Now THERE is torque!
RACE ON!!!
RACE ON!!!
